build_app.py

"""
Mac OS X .app build command for distutils

Originally (loosely) based on code from py2exe's build_exe.py by Thomas Heller.
"""
from __future__ import print_function

import collections
import imp
import os
import plistlib
import shlex
import shutil
import sys
import types
import zipfile
from distutils import log
from distutils.errors import DistutilsOptionError, DistutilsPlatformError
from distutils.sysconfig import get_config_h_filename, get_config_var
from distutils.util import convert_path, get_platform
from itertools import chain

import macholib.dyld
import macholib.MachO
import macholib.MachOStandalone
import pkg_resources
from macholib.util import flipwritable
from modulegraph import modulegraph, zipio
from modulegraph.find_modules import find_modules, find_needed_modules, parse_mf_results
from modulegraph.modulegraph import Package, Script, SourceModule
from modulegraph.util import imp_find_module
from setuptools import Command

from py2app import recipes
from py2app._pkg_meta import IGNORED_DISTINFO, scan_for_metadata
from py2app.apptemplate.setup import main as script_executable
from py2app.create_appbundle import create_appbundle
from py2app.create_pluginbundle import create_pluginbundle
from py2app.filters import has_filename_filter, not_stdlib_filter
from py2app.util import (
    byte_compile,
    codesign_adhoc,
    copy_file,
    copy_resource,
    copy_tree,
    fancy_split,
    find_version,
    fsencoding,
    in_system_path,
    iter_platform_files,
    make_exec,
    make_loader,
    make_symlink,
    makedirs,
    mapc,
    mergecopy,
    momc,
    skipscm,
    strip_files,
)

try:
    from cStringIO import StringIO
except ImportError:
    from io import StringIO


PYTHONFRAMEWORK = get_config_var("PYTHONFRAMEWORK")


PLUGIN_SUFFIXES = {
    ".qlgenerator": "QuickLook",
    ".mdimporter": "Spotlight",
    ".xpc": "XPCServices",
    ".service": "Services",
    ".prefPane": "PreferencePanes",
    ".iaplugin": "InternetAccounts",
    ".action": "Automator",
}

try:
    basestring
except NameError:
    basestring = str

if hasattr(sys, "real_prefix"):
    sys_base_prefix = sys.real_prefix
elif hasattr(sys, "base_prefix"):
    sys_base_prefix = sys.base_prefix
else:
    sys_base_prefix = sys.prefix


def finalize_distribution_options(dist):
    """
    setuptools.finalize_distribution_options extension
    point for py2app, to deail with autodiscovery in
    setuptools 61.

    This addin will set the name and py_modules attributes
    when a py2app distribution is detected that does not
    yet have these attributes.
    are not already set
    """
    if getattr(dist, "app", None) is None and getattr(dist, "plugin", None) is None:
        return

    if getattr(dist.metadata, "py_modules", None) is None:
        dist.py_modules = []

    name = getattr(dist.metadata, "name", None)
    if name is None or name == "UNKNOWN":
        if dist.app:
            targets = FixupTargets(dist.app, "script")
        else:
            targets = FixupTargets(dist.plugin, "script")

        base = targets[0].get_dest_base()
        name = os.path.basename(base)

        dist.metadata.name = name


def loader_paths(sourcefn, destfn):
    # Yield (sourcefn, destfn) pairs for all
    # '@loader_path' load commands in 'sourcefn'
    sourcedir = os.path.dirname(sourcefn)
    destdir = os.path.dirname(destfn)

    m = macholib.MachO.MachO(sourcefn)
    for header in m.headers:
        for _idx, _name, other in header.walkRelocatables():
            if not other.startswith("@loader_path/"):
                continue
            relpath = other[13:]
            yield os.path.join(sourcedir, relpath), os.path.join(destdir, relpath)


def rewrite_tkinter_load_commands(tkinter_path):
    m = macholib.MachO.MachO(tkinter_path)
    tcl_path = None
    tk_path = None

    rewrite_map = {}

    for header in m.headers:
        for _idx, _name, other in header.walkRelocatables():
            if other.endswith("/Tk"):
                if tk_path is not None and other != tk_path:
                    raise DistutilsPlatformError(
                        "_tkinter is linked to different Tk paths"
                    )
                tk_path = other
            elif other.endswith("/Tcl"):
                if tcl_path is not None and other != tcl_path:
                    raise DistutilsPlatformError(
                        "_tkinter is linked to different Tcl paths"
                    )
                tcl_path = other

    if tcl_path is None or "Tcl.framework" not in tcl_path:
        raise DistutilsPlatformError("_tkinter is not linked a Tcl.framework")

    if tk_path is None or "Tk.framework" not in tk_path:
        raise DistutilsPlatformError("_tkinter is not linked a Tk.framework")

    system_tcl_versions = [
        nm
        for nm in os.listdir("/System/Library/Frameworks/Tcl.framework/Versions")
        if nm != "Current"
    ]
    system_tk_versions = [
        nm
        for nm in os.listdir("/System/Library/Frameworks/Tk.framework/Versions")
        if nm != "Current"
    ]

    if not tcl_path.startswith("/System/Library/Frameworks"):
        # ../Versions/8.5/Tcl
        ver = os.path.basename(os.path.dirname(tcl_path))
        if ver not in system_tcl_versions:
            raise DistutilsPlatformError(
                "_tkinter is linked to a version of Tcl not in /System"
            )

        rewrite_map[
            tcl_path
        ] = "/System/Library/Frameworks/Tcl.framework/Versions/%s/Tcl" % (ver,)

    if not tk_path.startswith("/System/Library/Frameworks"):
        # ../Versions/8.5/Tk
        ver = os.path.basename(os.path.dirname(tk_path))
        if ver not in system_tk_versions:
            raise DistutilsPlatformError(
                "_tkinter is linked to a version of Tk not in /System"
            )

        rewrite_map[
            tk_path
        ] = "/System/Library/Frameworks/Tk.framework/Versions/%s/Tk" % (ver,)

    if rewrite_map:
        print("Relinking _tkinter.so to system Tcl/Tk")
        rewroteAny = False
        for header in m.headers:
            for idx, _name, other in header.walkRelocatables():
                data = rewrite_map.get(other)
                if data:
                    if header.rewriteDataForCommand(
                        idx, data.encode(sys.getfilesystemencoding())
                    ):
                        rewroteAny = True

        if rewroteAny:
            old_mode = flipwritable(m.filename)
            try:
                with open(m.filename, "rb+") as f:
                    for header in m.headers:
                        f.seek(0)
                        header.write(f)
                        f.seek(0, 2)
                        f.flush()

            finally:
                flipwritable(m.filename, old_mode)

    else:
        print("_tkinter already linked against system Tcl/Tk")


def get_zipfile(dist, semi_standalone=False):
    if sys.version_info[0] == 3:
        if semi_standalone:
            return "python%d.%d/site-packages.zip" % (sys.version_info[:2])
        else:
            return "python%d%d.zip" % (sys.version_info[:2])

    return getattr(dist, "zipfile", None) or "site-packages.zip"


def framework_copy_condition(src):
    # Skip Headers, .svn, and CVS dirs
    return skipscm(src) and os.path.basename(src) != "Headers"


class PythonStandalone(macholib.MachOStandalone.MachOStandalone):
    def __init__(self, appbuilder, ext_dir, copyexts, *args, **kwargs):
        super(PythonStandalone, self).__init__(*args, **kwargs)
        self.appbuilder = appbuilder
        self.ext_map = {}
        for e in copyexts:
            fn = os.path.join(
                ext_dir,
                (e.identifier.replace(".", os.sep) + os.path.splitext(e.filename)[1]),
            )
            self.ext_map[fn] = os.path.dirname(e.filename)

    def update_node(self, m):
        if isinstance(m, macholib.MachO.MachO):
            if m.filename in self.ext_map:
                m.loader_path = self.ext_map[m.filename]
        return m

    def copy_dylib(self, src):
        dest = os.path.join(self.dest, os.path.basename(src))
        if os.path.islink(src):
            dest = os.path.join(self.dest, os.path.basename(os.path.realpath(src)))

            # Ensure that the orginal name also exists, avoids problems when
            # the filename is used from Python (see issue #65)
            #
            # NOTE: The if statement checks that the target link won't
            #       point to itself, needed for systems like homebrew that
            #       store symlinks in "public" locations that point to
            #       files of the same name in a per-package install location.
            link_dest = os.path.join(self.dest, os.path.basename(src))
            if os.path.basename(link_dest) != os.path.basename(dest):
                make_symlink(os.path.basename(dest), link_dest)

        else:
            dest = os.path.join(self.dest, os.path.basename(src))

        self.ext_map[dest] = os.path.dirname(src)
        return self.appbuilder.copy_dylib(src, dest)

    def copy_framework(self, info):
        destfn = self.appbuilder.copy_framework(info, self.dest)
        dest = os.path.join(self.dest, info["shortname"] + ".framework")
        self.pending.append((destfn, iter_platform_files(dest)))
        return destfn


def iterRecipes(module=recipes):
    for name in dir(module):
        if name.startswith("_"):
            continue
        check = getattr(getattr(module, name), "check", None)
        if check is not None:
            yield (name, check)


# A very loosely defined "target".  We assume either a "script" or "modules"
# attribute.  Some attributes will be target specific.
class Target(object):
    def __init__(self, **kw):
        self.__dict__.update(kw)
        # If modules is a simple string, assume they meant list
        m = self.__dict__.get("modules")
        if m and isinstance(m, basestring):
            self.modules = [m]

    def __repr__(self):
        return "<Target %s>" % (self.__dict__,)

    def get_dest_base(self):
        dest_base = getattr(self, "dest_base", None)
        if dest_base:
            return dest_base

        script = getattr(self, "script", None)
        if script:
            return os.path.basename(os.path.splitext(script)[0])
        modules = getattr(self, "modules", None)
        assert modules, "no script, modules or dest_base specified"
        return modules[0].split(".")[-1]

    def validate(self):
        resources = getattr(self, "resources", [])
        for r_filename in resources:
            if not os.path.isfile(r_filename):
                raise DistutilsOptionError(
                    "Resource filename '%s' does not exist" % (r_filename,)
                )


def validate_target(dist, attr, value):
    res = FixupTargets(value, "script")
    other = {"app": "plugin", "plugin": "app"}
    if res and getattr(dist, other[attr]):
        raise DistutilsOptionError("You must specify either app or plugin, not both")


def FixupTargets(targets, default_attribute):
    if not targets:
        return targets
    try:
        targets = eval(targets)
    except:  # noqa: E722,B001
        pass
    ret = []
    for target_def in targets:
        if isinstance(target_def, basestring):
            # Create a default target object, with the string as the attribute
            target = Target(**{default_attribute: target_def})
        else:
            d = getattr(target_def, "__dict__", target_def)
            if default_attribute not in d:
                raise DistutilsOptionError(
                    "This target class requires an attribute '%s'"
                    % (default_attribute,)
                )
            target = Target(**d)
        target.validate()
        ret.append(target)
    return ret


def normalize_data_file(fn):
    if isinstance(fn, basestring):
        fn = convert_path(fn)
        return ("", [fn])
    return fn


def is_system():
    prefix = sys.prefix
    if os.path.exists(os.path.join(prefix, ".Python")):
        fn = os.path.join(
            prefix, "lib", "python%d.%d" % (sys.version_info[:2]), "orig-prefix.txt"
        )
        if os.path.exists(fn):
            with open(fn, "rU") as fp:
                prefix = fp.read().strip()

    return in_system_path(prefix)


def installation_info(version=None):
    if version is None:
        version = sys.version

    if is_system():
        return ".".join(version.split(".")[:2]) + " (FORCED: Using vendor Python)"
    else:
        return ".".join(version.split(".")[:2])


class py2app(Command):
    description = "create a Mac OS X application or plugin from Python scripts"
    # List of option tuples: long name, short name (None if no short
    # name), and help string.

    user_options = [
        ("app=", None, "application bundle to be built"),
        ("plugin=", None, "plugin bundle to be built"),
        (
            "optimize=",
            "O",
            'optimization level: -O1 for "python -O", '
            '-O2 for "python -OO", and -O0 to disable [default: -O0]',
        ),
        ("includes=", "i", "comma-separated list of modules to include"),
        ("packages=", "p", "comma-separated list of packages to include"),
        ("iconfile=", None, "Icon file to use"),
        ("excludes=", "e", "comma-separated list of modules to exclude"),
        (
            "dylib-excludes=",
            "E",
            "comma-separated list of frameworks or dylibs to exclude",
        ),
        ("datamodels=", None, "xcdatamodels to be compiled and copied into Resources"),
        (
            "expected-missing-imports=",
            None,
            "expected missing imports either a comma sperated list "
            "or @ followed by file containing a list of imports, one per line",
        ),
        (
            "mappingmodels=",
            None,
            "xcmappingmodels to be compiled and copied into Resources",
        ),
        (
            "resources=",
            "r",
            "comma-separated list of additional data files and folders to "
            "include (not for code!)",
        ),
        (
            "frameworks=",
            "f",
            "comma-separated list of additional frameworks and dylibs to " "include",
        ),
        ("plist=", "P", "Info.plist template file, dict, or plistlib.Plist"),
        (
            "extension=",
            None,
            "Bundle extension [default:.app for app, .plugin for plugin]",
        ),
        ("graph", "g", "output module dependency graph"),
        ("xref", "x", "output module cross-reference as html"),
        ("no-strip", None, "do not strip debug and local symbols from output"),
        # ("compressed", 'c',
        # "create a compressed zipfile"),
        (
            "no-chdir",
            "C",
            "do not change to the data directory (Contents/Resources) "
            "[forced for plugins]",
        ),
        # ("no-zip", 'Z',
        # "do not use a zip file"),
        (
            "semi-standalone",
            "s",
            "depend on an existing installation of Python " + installation_info(),
        ),
        ("alias", "A", "Use an alias to current source file (for development only!)"),
        ("argv-emulation", "a", "Use argv emulation [disabled for plugins]."),
        ("argv-inject=", None, "Inject some commands into the argv"),
        (
            "emulate-shell-environment",
            None,
            "Emulate the shell environment you get in a Terminal window",
        ),
        (
            "use-pythonpath",
            None,
            "Allow PYTHONPATH to effect the interpreter's environment",
        ),
        (
            "use-faulthandler",
            None,
            "Enable the faulthandler in the generated bundle (Python 3.3+)",
        ),
        ("verbose-interpreter", None, "Start python in verbose mode"),
        ("bdist-base=", "b", "base directory for build library (default is build)"),
        (
            "dist-dir=",
            "d",
            "directory to put final built distributions in (default is dist)",
        ),
        (
            "site-packages",
            None,
            "include the system and user site-packages into sys.path",
        ),
        (
            "strip",
            "S",
            "strip debug and local symbols from output (on by default, for "
            "compatibility)",
        ),
        (
            "prefer-ppc",
            None,
            "Force application to run translated on i386 (LSPrefersPPC=True)",
        ),
        (
            "debug-modulegraph",
            None,
            "Drop to pdb console after the module finding phase is complete",
        ),
        (
            "debug-skip-macholib",
            None,
            "skip macholib phase (app will not be standalone!)",
        ),
        (
            "arch=",
            None,
            "set of architectures to use (fat, fat3, universal, intel, "
            "i386, ppc, x86_64; default is the set for the current python "
            "binary)",
        ),
        (
            "qt-plugins=",
            None,
            "set of Qt plugins to include in the application bundle " "(default None)",
        ),
        (
            "matplotlib-backends=",
            None,
            "set of matplotlib backends to include (default: all)",
        ),
        (
            "extra-scripts=",
            None,
            "set of additonal scripts to include in the application bundle",
        ),
        ("include-plugins=", None, "List of plugins to include"),
        (
            "force-system-tk",
            None,
            "Ensure that Tkinter is linked against Apple's build of Tcl/Tk",
        ),
        (
            "report-missing-from-imports",
            None,
            "Report the list of missing names for 'from module import name'",
        ),
        (
            "no-report-missing-conditional-import",
            None,
            "Don't report missing modules from conditional imports",
        ),
        (
            "redirect-stdout-to-asl",
            None,
            "Forward the stdout/stderr streams to Console.app using ASL",
        ),
    ]

    boolean_options = [
        # "compressed",
        "xref",
        "strip",
        "no-strip",
        "site-packages",
        "semi-standalone",
        "alias",
        "argv-emulation",
        # "no-zip",
        "use-pythonpath",
        "use-faulthandler",
        "verbose-interpreter",
        "no-chdir",
        "debug-modulegraph",
        "debug-skip-macholib",
        "graph",
        "prefer-ppc",
        "emulate-shell-environment",
        "force-system-tk",
        "report-missing-from-imports",
        "no-report-missing-conditional-import",
        "redirect-stdout-to-asl",
    ]

    always_expected_missing_imports = {
        "org",
        "java",  # Jython only
        "_frozen_importlib_external",  # Seems to be side effect of py2app
    }

    def initialize_options(self):
        self.app = None
        self.plugin = None
        self.bdist_base = None
        self.xref = False
        self.graph = False
        self.no_zip = 0
        self.optimize = None
        # self.optimize = 0
        # if hasattr(sys, 'flags'):
        # self.optimize = sys.flags.optimize
        self.arch = None
        self.strip = True
        self.no_strip = False
        self.iconfile = None
        self.extension = None
        self.alias = 0
        self.argv_emulation = 0
        self.emulate_shell_environment = 0
        self.argv_inject = None
        self.no_chdir = 0
        self.site_packages = False
        self.use_pythonpath = False
        self.use_faulthandler = False
        self.verbose_interpreter = False
        self.includes = None
        self.packages = None
        self.excludes = None
        self.dylib_excludes = None
        self.frameworks = None
        self.resources = None
        self.datamodels = None
        self.mappingmodels = None
        self.plist = None
        self.compressed = True
        self.semi_standalone = is_system()
        self.dist_dir = None
        self.debug_skip_macholib = False
        self.debug_modulegraph = False
        self.prefer_ppc = False
        self.filters = []
        self.eggs = []
        self.qt_plugins = None
        self.matplotlib_backends = None
        self.extra_scripts = None
        self.include_plugins = None
        self.force_system_tk = False
        self.report_missing_from_imports = False
        self.no_report_missing_conditional_import = False
        self.redirect_stdout_to_asl = False
        self._python_app = None
        self.use_old_sdk = False
        self.expected_missing_imports = None

    def finalize_options(self):
        if self.prefer_ppc:
            print(
                "WARNING: Option --prefer-ppc is deprecated an will be removed "
                "in a future version. Use --arch instead"
            )

        if sys_base_prefix != sys.prefix:
            self._python_app = os.path.join(sys_base_prefix, "Resources", "Python.app")

        elif os.path.exists(os.path.join(sys.prefix, "pyvenv.cfg")):
            with open(os.path.join(sys.prefix, "pyvenv.cfg")) as fp:
                for line in fp:
                    if line.startswith("home = "):
                        _, home_path = line.split("=", 1)
                        prefix = os.path.dirname(home_path.strip())
                        break

                else:
                    raise DistutilsPlatformError(
                        "Pyvenv detected, but cannot determine base prefix"
                    )

                self._python_app = os.path.join(prefix, "Resources", "Python.app")

        elif os.path.exists(os.path.join(sys.prefix, ".Python")):
            fn = os.path.join(
                sys.prefix,
                "lib",
                "python%d.%d" % (sys.version_info[:2]),
                "orig-prefix.txt",
            )
            if os.path.exists(fn):
                with open(fn, "rU") as fp:
                    prefix = fp.read().strip()
                    self._python_app = os.path.join(prefix, "Resources", "Python.app")
            else:
                raise DistutilsPlatformError(
                    "Virtualenv detected, but cannot determine base prefix"
                )

        else:
            self._python_app = os.path.join(sys.prefix, "Resources", "Python.app")

        if self.optimize is None:
            self.optimize = 0
            if hasattr(sys, "flags"):
                self.optimize = sys.flags.optimize

        if not self.strip:
            self.no_strip = True
        elif self.no_strip:
            self.strip = False
        self.optimize = int(self.optimize)
        if self.argv_inject and isinstance(self.argv_inject, basestring):
            self.argv_inject = shlex.split(self.argv_inject)
        self.includes = set(fancy_split(self.includes))
        self.includes.add("encodings.*")
        self.includes.add("_sitebuiltins")

        if self.use_faulthandler:
            self.includes.add("faulthandler")
        self.packages = set(fancy_split(self.packages))

        self.excludes = set(fancy_split(self.excludes))
        self.excludes.add("readline")
        # included by apptemplate
        self.excludes.add("site")
        if getattr(self.distribution, "install_requires", None):
            self.includes.add("pkg_resources")
            self.eggs = pkg_resources.require(self.distribution.install_requires)

        # Setuptools/distribute style namespace packages uses
        # __import__('pkg_resources'), and that import isn't detected at the
        # moment. Forcefully include pkg_resources.
        self.includes.add("pkg_resources")

        dylib_excludes = fancy_split(self.dylib_excludes)
        self.dylib_excludes = []
        for fn in dylib_excludes:
            try:
                res = macholib.dyld.framework_find(fn)
            except ValueError:
                try:
                    res = macholib.dyld.dyld_find(fn)
                except ValueError:
                    res = fn
            self.dylib_excludes.append(res)
        self.resources = fancy_split(self.resources)
        frameworks = fancy_split(self.frameworks)
        self.frameworks = []
        for fn in frameworks:
            try:
                res = macholib.dyld.framework_find(fn)
            except ValueError:
                res = macholib.dyld.dyld_find(fn)
            while res in self.dylib_excludes:
                self.dylib_excludes.remove(res)
            self.frameworks.append(res)
        if not self.plist:
            self.plist = {}
        if isinstance(self.plist, basestring):

            if hasattr(plistlib, "load"):
                with open(self.plist, "rb") as fp:
                    self.plist = plistlib.load(fp)
            else:
                # 2.7
                self.plist = plistlib.Plist.fromFile(self.plist)
        if hasattr(plistlib, "Dict") and isinstance(self.plist, plistlib.Dict):
            # 2.7
            self.plist = dict(self.plist.__dict__)
        else:
            self.plist = dict(self.plist)

        self.set_undefined_options(
            "bdist", ("dist_dir", "dist_dir"), ("bdist_base", "bdist_base")
        )

        if self.semi_standalone:
            self.filters.append(not_stdlib_filter)

        if self.iconfile is None and "CFBundleIconFile" not in self.plist:
            # Default is the generic applet icon in the framework
            iconfile = os.path.join(
                self._python_app, "Contents", "Resources", "PythonApplet.icns"
            )
            if os.path.exists(iconfile):
                self.iconfile = iconfile

        self.runtime_preferences = list(self.get_runtime_preferences())

        self.qt_plugins = fancy_split(self.qt_plugins)
        self.matplotlib_backends = fancy_split(self.matplotlib_backends)
        self.extra_scripts = fancy_split(self.extra_scripts)
        self.include_plugins = fancy_split(self.include_plugins)

        if self.expected_missing_imports is None:
            self.expected_missing_imports = self.always_expected_missing_imports
        else:
            if self.expected_missing_imports.startswith("@"):
                self.expected_missing_imports = self.read_expected_missing_imports_file(
                    self.expected_missing_imports[1:]
                )
            else:
                self.expected_missing_imports = set(
                    fancy_split(self.expected_missing_imports)
                )
            self.expected_missing_imports |= self.always_expected_missing_imports

        if self.datamodels:
            print(
                "WARNING: the datamodels option is deprecated, "
                "add model files to the list of resources"
            )

        if self.mappingmodels:
            print(
                "WARNING: the mappingmodels option is deprecated, "
                "add model files to the list of resources"
            )

    def read_expected_missing_imports_file(self, filename):
        #
        #   ignore blank lines and lines that start with a '#'
        #   only one import per line
        #
        expected_missing_imports = set()
        with open(filename, "r") as f:
            for line in f:
                line = line.strip()
                if line.startswith("#") or line == "":
                    continue
                expected_missing_imports.add(line)

        return expected_missing_imports

    def get_default_plist(self):
        plist = {}
        target = self.targets[0]

        version = self.distribution.get_version()
        if version == "0.0.0":
            try:
                version = find_version(target.script)
            except ValueError:
                pass

        if not isinstance(version, basestring):
            raise DistutilsOptionError("Version must be a string")

        if sys.version_info[0] > 2 and isinstance(version, type("a".encode("ascii"))):
            raise DistutilsOptionError("Version must be a string")

        plist["CFBundleVersion"] = version

        name = self.distribution.get_name()
        if name == "UNKNOWN":
            base = target.get_dest_base()
            name = os.path.basename(base)
        plist["CFBundleName"] = name

        return plist

    def get_runtime(self, prefix=None, version=None):
        # this is a bit of a hack!
        # ideally we'd use dylib functions to figure this out
        if prefix is None:
            prefix = sys.prefix
        if version is None:
            version = sys.version
        version = ".".join(version.split(".")[:2])
        info = None
        if sys_base_prefix != sys.prefix:
            prefix = sys_base_prefix

        elif os.path.exists(os.path.join(prefix, "pyvenv.cfg")):
            with open(os.path.join(prefix, "pyvenv.cfg")) as fp:
                for ln in fp:
                    if ln.startswith("home = "):
                        _, home_path = ln.split("=", 1)
                        prefix = os.path.dirname(home_path.strip())
                        break
                else:
                    raise DistutilsPlatformError(
                        "Pyvenv detected, cannot determine base prefix"
                    )

        elif os.path.exists(os.path.join(prefix, ".Python")):
            # We're in a virtualenv environment, locate the real prefix
            fn = os.path.join(
                prefix, "lib", "python%d.%d" % (sys.version_info[:2]), "orig-prefix.txt"
            )

            if os.path.exists(fn):
                with open(fn, "rU") as fp:
                    prefix = fp.read().strip()

        try:
            fmwk = macholib.dyld.framework_find(prefix)
        except ValueError:
            info = None
        else:
            info = macholib.dyld.framework_info(fmwk)

        if info is not None:
            dylib = info["name"]
            runtime = os.path.join(info["location"], info["name"])
        else:
            dylib = "libpython%d.%d.dylib" % (sys.version_info[:2])
            runtime = os.path.join(prefix, "lib", dylib)

        return dylib, runtime

    def get_runtime_preferences(self, prefix=None, version=None):
        dylib, runtime = self.get_runtime(prefix=prefix, version=version)
        yield os.path.join("@executable_path", "..", "Frameworks", dylib)
        if self.semi_standalone or self.alias:
            yield runtime

    def run(self):
        if get_config_var("PYTHONFRAMEWORK") is None:
            if not get_config_var("Py_ENABLE_SHARED"):
                raise DistutilsPlatformError(
                    "This python does not have a shared library or framework"
                )

            else:
                # Issue .. in py2app's tracker, and issue .. in python's
                # tracker: a unix-style shared library build did not read the
                # application environment correctly. The collection of
                # if statements below gives a clean error message when py2app
                # is started, instead of building a bundle that will give a
                # confusing error message when started.
                msg = (
                    "py2app is not supported for a shared library build "
                    "with this version of python"
                )
                if sys.version_info[:2] < (2, 7):
                    raise DistutilsPlatformError(msg)
                elif sys.version_info[:2] == (2, 7) and sys.version_info[3] < 4:
                    raise DistutilsPlatformError(msg)
                elif sys.version_info[0] == 3 and sys.version_info[1] < 2:
                    raise DistutilsPlatformError(msg)
                elif sys.version_info[:2] == (3, 2) and sys.version_info[3] < 3:
                    raise DistutilsPlatformError(msg)
                elif sys.version_info[:2] == (3, 3) and sys.version_info[3] < 1:
                    raise DistutilsPlatformError(msg)

        if (
            hasattr(self.distribution, "install_requires")
            and self.distribution.install_requires
        ):

            self.distribution.fetch_build_eggs(self.distribution.install_requires)

        build = self.reinitialize_command("build")
        build.build_base = self.bdist_base
        build.run()
        self.create_directories()
        self.fixup_distribution()
        self.initialize_plist()

        sys_old_path = sys.path[:]
        extra_paths = [os.path.dirname(target.script) for target in self.targets]
        extra_paths.extend([build.build_platlib, build.build_lib])
        self.additional_paths = [
            os.path.abspath(p) for p in extra_paths if p is not None
        ]
        sys.path[:0] = self.additional_paths

        # this needs additional_paths
        self.initialize_prescripts()

        try:
            self._run()
        finally:
            sys.path = sys_old_path

    def iter_datamodels(self, resdir):
        for (path, files) in (
            normalize_data_file(fn) for fn in (self.datamodels or ())
        ):
            path = fsencoding(path)
            for fn in files:
                fn = fsencoding(fn)
                basefn, ext = os.path.splitext(fn)
                if ext != ".xcdatamodel":
                    basefn = fn
                    fn += ".xcdatamodel"
                destfn = os.path.basename(basefn) + ".mom"
                yield fn, os.path.join(resdir, path, destfn)

    def compile_datamodels(self, resdir):
        for src, dest in self.iter_datamodels(resdir):
            print("compile datamodel", src, "->", dest)
            self.mkpath(os.path.dirname(dest))
            momc(src, dest)

    def iter_mappingmodels(self, resdir):
        for (path, files) in (
            normalize_data_file(fn) for fn in (self.mappingmodels or ())
        ):
            path = fsencoding(path)
            for fn in files:
                fn = fsencoding(fn)
                basefn, ext = os.path.splitext(fn)
                if ext != ".xcmappingmodel":
                    basefn = fn
                    fn += ".xcmappingmodel"
                destfn = os.path.basename(basefn) + ".cdm"
                yield fn, os.path.join(resdir, path, destfn)

    def compile_mappingmodels(self, resdir):
        for src, dest in self.iter_mappingmodels(resdir):
            self.mkpath(os.path.dirname(dest))
            mapc(src, dest)

    def iter_extra_plugins(self):
        for item in self.include_plugins:
            if isinstance(item, (list, tuple)):
                subdir, path = item

            else:
                ext = os.path.splitext(item)[1]
                try:
                    subdir = PLUGIN_SUFFIXES[ext]
                    path = item
                except KeyError:
                    raise DistutilsOptionError(
                        "Cannot determine subdirectory for plugin %s" % (item,)
                    )

            yield path, os.path.join(subdir, os.path.basename(path))

    def iter_data_files(self):
        dist = self.distribution
        allres = chain(getattr(dist, "data_files", ()) or (), self.resources)
        for (path, files) in (normalize_data_file(fn) for fn in allres):
            path = fsencoding(path)
            for fn in files:
                fn = fsencoding(fn)
                yield fn, os.path.join(path, os.path.basename(fn))

    def collect_scripts(self):
        # these contains file names
        scripts = set()

        for target in self.targets:
            scripts.add(target.script)
            scripts.update([k for k in target.prescripts if isinstance(k, basestring)])
            if hasattr(target, "extra_scripts"):
                scripts.update(target.extra_scripts)

        scripts.update(self.extra_scripts)
        return scripts

    def get_plist_options(self):
        result = {
            "PyOptions": {
                "use_pythonpath": bool(self.use_pythonpath),
                "site_packages": bool(self.site_packages),
                "alias": bool(self.alias),
                "argv_emulation": bool(self.argv_emulation),
                "emulate_shell_environment": bool(self.emulate_shell_environment),
                "no_chdir": bool(self.no_chdir),
                "prefer_ppc": self.prefer_ppc,
                "verbose": self.verbose_interpreter,
                "use_faulthandler": self.use_faulthandler,
            },
        }
        if self.optimize:
            result["PyOptions"]["optimize"] = self.optimize
        return result

    def initialize_plist(self):
        plist = self.get_default_plist()
        for target in self.targets:
            plist.update(getattr(target, "plist", {}))
        plist.update(self.plist)
        plist.update(self.get_plist_options())

        if self.iconfile:
            iconfile = self.iconfile
            if not os.path.exists(iconfile):
                iconfile = iconfile + ".icns"
            if not os.path.exists(iconfile):
                raise DistutilsOptionError(
                    "icon file must exist: %r" % (self.iconfile,)
                )
            self.resources.append(iconfile)
            plist["CFBundleIconFile"] = os.path.basename(iconfile)
        if self.prefer_ppc:
            plist["LSPrefersPPC"] = True

        self.plist = plist
        return plist

    def run_alias(self):
        self.app_files = []
        for target in self.targets:

            extra_scripts = list(self.extra_scripts)
            if hasattr(target, "extra_scripts"):
                extra_scripts.update(extra_scripts)

            dst = self.build_alias_executable(target, target.script, extra_scripts)
            self.app_files.append(dst)

            for fn in extra_scripts:
                if fn.endswith(".py"):
                    fn = fn[:-3]
                elif fn.endswith(".pyw"):
                    fn = fn[:-4]

                src_fn = script_executable(
                    arch=self.arch, secondary=True, use_old_sdk=self.use_old_sdk
                )
                tgt_fn = os.path.join(
                    target.appdir, "Contents", "MacOS", os.path.basename(fn)
                )
                mergecopy(src_fn, tgt_fn)
                make_exec(tgt_fn)

            arch = self.arch if self.arch is not None else get_platform().split("-")[-1]
            if arch in ("universal2", "arm64"):
                codesign_adhoc(target.appdir)

    def collect_recipedict(self):
        return dict(iterRecipes())

    def get_modulefinder(self):
        if self.debug_modulegraph:
            debug = 4
        else:
            debug = 0
        return find_modules(
            scripts=self.collect_scripts(),
            includes=self.includes,
            packages=self.packages,
            excludes=self.excludes,
            debug=debug,
        )

    def collect_filters(self):
        return [has_filename_filter] + list(self.filters)

    def process_recipes(self, mf, filters, flatpackages, loader_files):
        rdict = self.collect_recipedict()
        while True:
            for name, check in rdict.items():
                rval = check(self, mf)
                if rval is None:
                    print("--- Skipping recipe %s ---" % (name,))
                    continue
                # we can pull this off so long as we stop the iter
                del rdict[name]
                print("*** using recipe: %s ***" % (name,), rval)

                if "expected_missing_imports" in rval:
                    self.expected_missing_imports |= rval.get(
                        "expected_missing_imports"
                    )

                if rval.get("packages"):
                    self.packages.update(rval["packages"])
                    find_needed_modules(mf, packages=rval["packages"])

                for pkg in rval.get("flatpackages", ()):
                    if isinstance(pkg, basestring):
                        pkg = (os.path.basename(pkg), pkg)
                    flatpackages[pkg[0]] = pkg[1]
                filters.extend(rval.get("filters", ()))
                loader_files.extend(rval.get("loader_files", ()))
                newbootstraps = list(
                    map(self.get_bootstrap, rval.get("prescripts", ()))
                )

                if rval.get("includes"):
                    find_needed_modules(mf, includes=rval["includes"])

                if rval.get("resources"):
                    self.resources.extend(rval["resources"])

                if rval.get("frameworks"):
                    self.frameworks.extend(rval["frameworks"])

                if rval.get("use_old_sdk"):
                    self.use_old_sdk = True

                for fn in newbootstraps:
                    if isinstance(fn, basestring):
                        mf.run_script(fn)

                for target in self.targets:
                    target.prescripts.extend(newbootstraps)
                break
            else:
                break

    def _run(self):
        try:
            if self.alias:
                self.run_alias()
            else:
                self.run_normal()
        except:  # noqa: E722,B001
            raise
            # import pdb
            # import sys
            # import traceback
            #
            # traceback.print_exc()
            # pdb.post_mortem(sys.exc_info()[2])
        #
        print("Done!")

    def filter_dependencies(self, mf, filters):
        print("*** filtering dependencies ***")
        nodes_seen, nodes_removed, nodes_orphaned = mf.filterStack(filters)
        print("%d total" % (nodes_seen,))
        print("%d filtered" % (nodes_removed,))
        print("%d orphaned" % (nodes_orphaned,))
        print("%d remaining" % (nodes_seen - nodes_removed,))

    def get_appname(self):
        return self.plist["CFBundleName"]

    def build_xref(self, mf, flatpackages):
        for target in self.targets:
            base = target.get_dest_base()
            appdir = os.path.join(self.dist_dir, os.path.dirname(base))
            appname = self.get_appname()
            dgraph = os.path.join(appdir, appname + ".html")
            print("*** creating dependency html: %s ***" % (os.path.basename(dgraph),))
            with open(dgraph, "w") as fp:
                mf.create_xref(fp)

    def build_graph(self, mf, flatpackages):
        for target in self.targets:
            base = target.get_dest_base()
            appdir = os.path.join(self.dist_dir, os.path.dirname(base))
            appname = self.get_appname()
            dgraph = os.path.join(appdir, appname + ".dot")
            print("*** creating dependency graph: %s ***" % (os.path.basename(dgraph),))
            with open(dgraph, "w") as fp:
                mf.graphreport(fp, flatpackages=flatpackages)

    def finalize_modulefinder(self, mf):
        for item in mf.flatten():
            if isinstance(item, Package) and item.filename == "-":
                # In python3.3 or later the default importer supports namespace
                # packages without an __init__ file, don't use that
                # funcionality because that causes problems with our suppport
                # for loading C extensions.
                #
                # if sys.version_info[:2] <= (3,3):
                if 1:
                    fn = os.path.join(self.temp_dir, "empty_package", "__init__.py")
                    if not os.path.exists(fn):
                        dn = os.path.dirname(fn)
                        if not os.path.exists(dn):
                            os.makedirs(dn)
                        with open(fn, "w"):
                            pass

                    item.filename = fn

        py_files, extensions = parse_mf_results(mf)

        # Remove all top-level scripts from the list of python files,
        # those get treated differently.
        py_files = [item for item in py_files if not isinstance(item, Script)]

        extensions = list(extensions)
        return py_files, extensions

    def collect_packagedirs(self):
        return list(
            filter(
                os.path.exists,
                [
                    os.path.join(os.path.realpath(self.get_bootstrap(pkg)), "")
                    for pkg in self.packages
                ],
            )
        )

    def may_log_missing(self, module_name):
        module_parts = module_name.split(".")
        for num_parts in range(1, len(module_parts) + 1):
            module_id = ".".join(module_parts[0:num_parts])
            if module_id in self.expected_missing_imports:
                return False

        return True

    def run_normal(self):
        mf = self.get_modulefinder()
        filters = self.collect_filters()
        flatpackages = {}
        loader_files = []
        self.process_recipes(mf, filters, flatpackages, loader_files)

        if self.debug_modulegraph:
            import pdb

            pdb.Pdb().set_trace()

        self.filter_dependencies(mf, filters)

        if self.graph:
            self.build_graph(mf, flatpackages)
        if self.xref:
            self.build_xref(mf, flatpackages)

        py_files, extensions = self.finalize_modulefinder(mf)
        pkgdirs = self.collect_packagedirs()
        self.create_binaries(py_files, pkgdirs, extensions, loader_files)

        missing = []
        syntax_error = []
        invalid_bytecode = []
        invalid_relative_import = []

        for module in mf.nodes():
            if isinstance(module, modulegraph.MissingModule):
                if module.identifier != "__main__":
                    missing.append(module)
            elif isinstance(module, modulegraph.InvalidSourceModule):
                syntax_error.append(module)
            elif hasattr(modulegraph, "InvalidCompiledModule") and isinstance(
                module, modulegraph.InvalidCompiledModule
            ):
                invalid_bytecode.append(module)
            elif hasattr(modulegraph, "InvalidRelativeImport") and isinstance(
                module, modulegraph.InvalidRelativeImport
            ):
                invalid_relative_import.append(module)

        if missing:
            missing_unconditional = collections.defaultdict(set)
            missing_fromimport = collections.defaultdict(set)
            missing_fromimport_conditional = collections.defaultdict(set)
            missing_conditional = collections.defaultdict(set)

            log.info("checking for any import problems")
            for module in sorted(missing):
                for m in mf.getReferers(module):
                    if m is None:
                        continue

                    try:
                        ed = mf.edgeData(m, module)
                    except KeyError:
                        ed = None

                    if hasattr(modulegraph, "DependencyInfo") and isinstance(
                        ed, modulegraph.DependencyInfo
                    ):
                        c = missing_unconditional
                        if ed.conditional or ed.function:
                            if ed.fromlist:
                                c = missing_fromimport_conditional
                            else:
                                c = missing_conditional

                        elif ed.fromlist:
                            c = missing_fromimport

                        c[module.identifier].add(m.identifier)

                    else:
                        missing_unconditional[module.identifier].add(m.identifier)

            if missing_unconditional:
                warnings = []
                for m in sorted(missing_unconditional):
                    try:
                        if "." in m:
                            m1, m2 = m.rsplit(".", 1)
                            try:
                                o = __import__(m1, fromlist=[m2])
                                o = getattr(o, m2)
                            except Exception:
                                if self.may_log_missing(m):
                                    warnings.append(
                                        " * %s (%s)"
                                        % (
                                            m,
                                            ", ".join(sorted(missing_unconditional[m])),
                                        )
                                    )
                                continue

                        else:
                            o = __import__(m)

                        if isinstance(o, types.ModuleType):
                            if self.may_log_missing(m):
                                warnings.append(
                                    " * %s (%s) [module alias]"
                                    % (m, ", ".join(sorted(missing_unconditional[m])))
                                )

                    except ImportError:
                        if self.may_log_missing(m):
                            warnings.append(
                                " * %s (%s)"
                                % (m, ", ".join(sorted(missing_unconditional[m])))
                            )

                if len(warnings) > 0:
                    log.warn("Modules not found (unconditional imports):")
                    for msg in warnings:
                        log.warn(msg)
                    log.warn("")

            if missing_conditional and not self.no_report_missing_conditional_import:
                warnings = []
                for m in sorted(missing_conditional):
                    try:
                        if "." in m:
                            m1, m2 = m.rsplit(".", 1)
                            o = __import__(m1, fromlist=[m2])
                            try:
                                o = getattr(o, m2)
                            except Exception:
                                if self.may_log_missing(m):
                                    warnings.append(
                                        " * %s (%s)"
                                        % (
                                            m,
                                            ", ".join(sorted(missing_unconditional[m])),
                                        )
                                    )
                                continue

                        else:
                            o = __import__(m)

                        if isinstance(o, types.ModuleType):
                            if self.may_log_missing(m):
                                warnings.append(
                                    " * %s (%s) [module alias]"
                                    % (m, ", ".join(sorted(missing_unconditional[m])))
                                )
                    except ImportError:
                        if self.may_log_missing(m):
                            warnings.append(
                                " * %s (%s)"
                                % (m, ", ".join(sorted(missing_conditional[m])))
                            )

                if len(warnings) > 0:
                    log.warn("Modules not found (conditional imports):")
                    for msg in warnings:
                        log.warn(msg)
                    log.warn("")

            if self.report_missing_from_imports and (
                missing_fromimport
                or (
                    not self.no_report_missing_conditional_import
                    and missing_fromimport_conditional
                )
            ):
                log.warn("Modules not found ('from ... import y'):")
                for m in sorted(missing_fromimport):
                    log.warn(
                        " * %s (%s)" % (m, ", ".join(sorted(missing_fromimport[m])))
                    )

                if (
                    not self.no_report_missing_conditional_import
                    and missing_fromimport_conditional
                ):
                    log.warn("")
                    log.warn("Conditional:")
                    for m in sorted(missing_fromimport_conditional):
                        log.warn(
                            " * %s (%s)"
                            % (m, ", ".join(sorted(missing_fromimport_conditional[m])))
                        )
                log.warn("")

        if syntax_error:
            log.warn("Modules with syntax errors:")
            for module in sorted(syntax_error):
                log.warn(" * %s" % (module.identifier))

            log.warn("")

        if invalid_relative_import:
            log.warn("Modules with invalid relative imports:")

            imports = collections.defaultdict(set)

            for module in sorted(invalid_relative_import):
                for n in mf.get_edges(module)[1]:
                    imports[n.identifier].add(module.relative_path)

            for mod in sorted(imports):
                log.warn(
                    " * %s (importing %s)" % (mod, ", ".join(sorted(imports[mod])))
                )

        if invalid_bytecode:
            log.warn("Modules with invalid bytecode:")
            for module in sorted(invalid_bytecode):
                log.warn(" * %s" % (module.identifier))

            log.warn("")

    def create_directories(self):
        bdist_base = self.bdist_base
        if self.semi_standalone:
            self.bdist_dir = os.path.join(
                bdist_base,
                "python%d.%d-semi_standalone" % (sys.version_info[:2]),
                "app",
            )
        else:
            self.bdist_dir = os.path.join(
                bdist_base, "python%d.%d-standalone" % (sys.version_info[:2]), "app"
            )

        if os.path.exists(self.bdist_dir):
            shutil.rmtree(self.bdist_dir)

        self.collect_dir = os.path.abspath(os.path.join(self.bdist_dir, "collect"))
        self.mkpath(self.collect_dir)

        self.temp_dir = os.path.abspath(os.path.join(self.bdist_dir, "temp"))
        self.mkpath(self.temp_dir)

        self.dist_dir = os.path.abspath(self.dist_dir)
        self.mkpath(self.dist_dir)

        self.lib_dir = os.path.join(
            self.bdist_dir,
            os.path.dirname(get_zipfile(self.distribution, self.semi_standalone)),
        )
        self.mkpath(self.lib_dir)

        self.ext_dir = os.path.join(self.lib_dir, "lib-dynload")
        self.mkpath(self.ext_dir)

        self.framework_dir = os.path.join(self.bdist_dir, "Frameworks")
        self.mkpath(self.framework_dir)

    def create_binaries(self, py_files, pkgdirs, extensions, loader_files):
        print("*** create binaries ***")
        dist = self.distribution
        pkgexts = []
        copyexts = []
        extmap = {}
        included_metadata = set()

        metadata_infos = scan_for_metadata(sys.path)

        def packagefilter(mod, pkgdirs=pkgdirs):
            fn = os.path.realpath(getattr(mod, "filename", None))
            if fn is None:
                return None
            for pkgdir in pkgdirs:
                if fn.startswith(pkgdir):
                    return None
            return fn

        for mod in py_files + extensions:
            fn = os.path.realpath(getattr(mod, "filename", None))
            if fn is None:
                return None

            dist_info_path = metadata_infos.get(fn, None)
            if dist_info_path is None and (fn.endswith(".pyc") or fn.endswith(".pyo")):
                dist_info_path = metadata_infos.get(fn[:-1], None)
            if dist_info_path is not None:
                print("ADD INFO", dist_info_path)
                included_metadata.add(dist_info_path)

        def files_in_dir(toplevel):
            for dirname, _, fns in os.walk(toplevel):
                for fn in fns:
                    yield os.path.realpath(os.path.join(dirname, fn))

        for pd in pkgdirs:
            # Ensure that packages included through the packages option
            # get their metadata included as well, even if the python
            # package contains files from multiple package distributions
            for fn in files_in_dir(pd):
                dist_info_path = metadata_infos.get(fn, None)
                if dist_info_path is None and (
                    fn.endswith(".pyc") or fn.endswith(".pyo")
                ):
                    dist_info_path = metadata_infos.get(fn[:-1], None)
                if dist_info_path is not None:
                    included_metadata.add(dist_info_path)

        if pkgdirs:
            py_files = list(filter(packagefilter, py_files))
        for ext in extensions:
            fn = packagefilter(ext)
            if fn is None:
                fn = os.path.realpath(getattr(ext, "filename", None))
                pkgexts.append(ext)
            else:
                if "." in ext.identifier:
                    py_files.append(self.create_loader(ext))
                copyexts.append(ext)
            extmap[fn] = ext

        # byte compile the python modules into the target directory
        print("*** byte compile python files ***")
        byte_compile(
            py_files,
            target_dir=self.collect_dir,
            optimize=self.optimize,
            force=self.force,
            verbose=self.verbose,
            dry_run=self.dry_run,
        )

        for item in py_files:
            if not isinstance(item, Package):
                continue
            self.copy_package_data(item, self.collect_dir)

        # copy package metadata
        for pkg_info_path in included_metadata:
            base = os.path.join(self.collect_dir, os.path.basename(pkg_info_path))
            os.mkdir(base)

            for fn in os.listdir(pkg_info_path):
                if fn in IGNORED_DISTINFO:
                    continue
                src = os.path.join(pkg_info_path, fn)
                dst = os.path.join(base, fn)

                if os.path.isdir(src):
                    self.copy_tree(src, dst, preserve_symlinks=False)
                else:
                    self.copy_file(src, dst)
        self.lib_files = []
        self.app_files = []

        # create the shared zipfile containing all Python modules
        archive_name = os.path.join(
            self.lib_dir, get_zipfile(dist, self.semi_standalone)
        )

        for path, files in loader_files:
            dest = os.path.join(self.collect_dir, path)
            self.mkpath(dest)
            for fn in files:
                destfn = os.path.join(dest, os.path.basename(fn))
                if os.path.isdir(fn):
                    self.copy_tree(fn, destfn, preserve_symlinks=False)
                else:
                    self.copy_file(fn, destfn)

        arcname = self.make_lib_archive(
            archive_name,
            base_dir=self.collect_dir,
            verbose=self.verbose,
            dry_run=self.dry_run,
        )

        # build the executables
        for target in self.targets:
            extra_scripts = list(self.extra_scripts)
            if hasattr(target, "extra_scripts"):
                extra_scripts.extend(target.extra_scripts)

            dst = self.build_executable(
                target, arcname, pkgexts, copyexts, target.script, extra_scripts
            )
            exp = os.path.join(dst, "Contents", "MacOS")
            execdst = os.path.join(exp, "python")
            if self.semi_standalone:
                make_symlink(sys.executable, execdst)
            else:
                if PYTHONFRAMEWORK:
                    # When we're using a python framework bin/python refers
                    # to a stub executable that we don't want use, we need
                    # the executable in Resources/Python.app
                    dpath = os.path.join(self._python_app, "Contents", "MacOS")
                    sfile = os.path.join(dpath, PYTHONFRAMEWORK)
                    if not os.path.exists(sfile):
                        sfile = os.path.join(dpath, "Python")
                    self.copy_file(sfile, execdst)
                    make_exec(execdst)

                elif os.path.exists(os.path.join(sys.prefix, ".Python")):
                    fn = os.path.join(
                        sys.prefix,
                        "lib",
                        "python%d.%d" % (sys.version_info[:2]),
                        "orig-prefix.txt",
                    )

                    if os.path.exists(fn):
                        with open(fn, "rU") as fp:
                            prefix = fp.read().strip()

                    rest_path = os.path.normpath(sys.executable)[
                        len(os.path.normpath(sys.prefix)) + 1 :  # noqa: E203
                    ]
                    if rest_path.startswith("."):
                        rest_path = rest_path[1:]

                    self.copy_file(os.path.join(prefix, rest_path), execdst)
                    make_exec(execdst)

                else:
                    self.copy_file(sys.executable, execdst)
                    make_exec(execdst)

            if not self.debug_skip_macholib:
                if self.force_system_tk:
                    print("force system tk")
                    resdir = os.path.join(dst, "Contents", "Resources")
                    pydir = os.path.join(
                        resdir, "lib", "python%s.%s" % (sys.version_info[:2])
                    )
                    ext_dir = os.path.join(pydir, os.path.basename(self.ext_dir))
                    tkinter_path = os.path.join(ext_dir, "_tkinter.so")
                    if os.path.exists(tkinter_path):
                        rewrite_tkinter_load_commands(tkinter_path)
                    else:
                        print("tkinter not found at", tkinter_path)

                mm = PythonStandalone(
                    appbuilder=self,
                    base=dst,
                    ext_dir=os.path.join(
                        dst,
                        "Contents",
                        "Resources",
                        "lib",
                        "python%s.%s" % (sys.version_info[:2]),
                        "lib-dynload",
                    ),
                    copyexts=copyexts,
                    executable_path=exp,
                )

                dylib, runtime = self.get_runtime()
                if self.semi_standalone:
                    mm.excludes.append(runtime)
                else:
                    mm.mm.run_file(runtime)
                for exclude in self.dylib_excludes:
                    info = macholib.dyld.framework_info(exclude)
                    if info is not None:
                        exclude = os.path.join(
                            info["location"], info["shortname"] + ".framework"
                        )
                    mm.excludes.append(exclude)
                for fmwk in self.frameworks:
                    mm.mm.run_file(fmwk)
                platfiles = mm.run()

                if self.strip:
                    platfiles = self.strip_dsym(platfiles)
                    self.strip_files(platfiles)

                arch = (
                    self.arch
                    if self.arch is not None
                    else get_platform().split("-")[-1]
                )

                if arch in ("universal2", "arm64"):
                    codesign_adhoc(target.appdir)
            self.app_files.append(dst)

    def copy_package_data(self, package, target_dir):
        """
        Copy any package data in a python package into the target_dir.

        This is a bit of a hack, it would be better to identify python eggs
        and copy those in whole.
        """
        exts = [i[0] for i in imp.get_suffixes()]
        exts.append(".py")
        exts.append(".pyc")
        exts.append(".pyo")

        def datafilter(item):
            for e in exts:
                if item.endswith(e):
                    return False
            return True

        target_dir = os.path.join(target_dir, *(package.identifier.split(".")))
        for dname in package.packagepath:
            filenames = list(filter(datafilter, zipio.listdir(dname)))
            for fname in filenames:
                if fname in (".svn", "CVS", ".hg", ".git"):
                    # Scrub revision manager junk
                    continue
                if fname in ("__pycache__",):
                    # Ignore PEP 3147 bytecode cache
                    continue
                if fname.startswith(".") and fname.endswith(".swp"):
                    # Ignore vim(1) temporary files
                    continue
                if fname.endswith("~") or fname.endswith(".orig"):
                    # Ignore backup files for common tools (hg, emacs, ...)
                    continue
                pth = os.path.join(dname, fname)

                # Check if we have found a package, exclude those
                if zipio.isdir(pth):
                    for p in zipio.listdir(pth):
                        if p.startswith("__init__.") and p[8:] in exts:
                            break

                    else:
                        if os.path.isfile(pth):
                            # Avoid extracting a resource file that happens
                            # to be zipfile.
                            copy_file(pth, os.path.join(target_dir, fname))
                        else:
                            copy_tree(pth, os.path.join(target_dir, fname))
                    continue

                elif zipio.isdir(pth) and (
                    zipio.isfile(os.path.join(pth, "__init__.py"))
                    or zipio.isfile(os.path.join(pth, "__init__.pyc"))
                    or zipio.isfile(os.path.join(pth, "__init__.pyo"))
                ):
                    # Subdirectory is a python package, these will get
                    # included later on when the subpackage itself is
                    # included, ignore for now.
                    pass

                else:
                    copy_file(pth, os.path.join(target_dir, fname))

    def strip_dsym(self, platfiles):
        """Remove .dSYM directories in the bundled application"""

        #
        # .dSYM directories are contain detached debugging information and
        # should be completely removed when the "strip" option is specified.
        #
        if self.dry_run:
            return platfiles
        for dirpath, dnames, _fnames in os.walk(self.appdir):
            for nm in list(dnames):
                if nm.endswith(".dSYM"):
                    print("removing debug info: %s/%s" % (dirpath, nm))
                    shutil.rmtree(os.path.join(dirpath, nm))
                    dnames.remove(nm)
        return [file for file in platfiles if ".dSYM" not in file]

    def strip_files(self, files):
        unstripped = 0
        stripfiles = []
        for fn in files:
            unstripped += os.stat(fn).st_size
            stripfiles.append(fn)
            log.info("stripping %s", os.path.basename(fn))
        strip_files(stripfiles, dry_run=self.dry_run, verbose=self.verbose)
        stripped = 0
        for fn in stripfiles:
            stripped += os.stat(fn).st_size
        log.info(
            "stripping saved %d bytes (%d / %d)",
            unstripped - stripped,
            stripped,
            unstripped,
        )

    def copy_dylib(self, src, dst):
        # will be copied from the framework?
        if src != sys.executable:
            force, self.force = self.force, True
            self.copy_file(src, dst)
            self.force = force
        return dst

    def copy_versioned_framework(self, info, dst):
        # Boy is this ugly, but it makes sense because the developer
        # could have both Python 2.3 and 2.4, or Tk 8.4 and 8.5, etc.
        # Saves a good deal of space, and I'm pretty sure this ugly
        # hack is correct in the general case.
        version = info["version"]
        if version is None:
            return self.raw_copy_framework(info, dst)
        short = info["shortname"] + ".framework"
        infile = os.path.join(info["location"], short)
        outfile = os.path.join(dst, short)
        vsplit = os.path.join(infile, "Versions").split(os.sep)

        def condition(src, vsplit=vsplit, version=version):
            srcsplit = src.split(os.sep)
            if (
                len(srcsplit) > len(vsplit)
                and srcsplit[: len(vsplit)] == vsplit
                and srcsplit[len(vsplit)] != version
                and not os.path.islink(src)
            ):
                return False

            # Skip Headers, .svn, and CVS dirs
            return framework_copy_condition(src)

        return self.copy_tree(
            infile, outfile, preserve_symlinks=True, condition=condition
        )

    def copy_framework(self, info, dst):
        force, self.force = self.force, True
        if info["shortname"] == PYTHONFRAMEWORK:
            self.copy_python_framework(info, dst)
        else:
            self.copy_versioned_framework(info, dst)
        self.force = force
        return os.path.join(dst, info["name"])

    def raw_copy_framework(self, info, dst):
        short = info["shortname"] + ".framework"
        infile = os.path.join(info["location"], short)
        outfile = os.path.join(dst, short)
        return self.copy_tree(
            infile, outfile, preserve_symlinks=True, condition=framework_copy_condition
        )

    def copy_python_framework(self, info, dst):
        # In this particular case we know exactly what we can
        # get away with.. should this be extended to the general
        # case?  Per-framework recipes?
        includedir = get_config_var("CONFINCLUDEPY")
        configdir = get_config_var("LIBPL")

        if includedir is None:
            includedir = "python%d.%d" % (sys.version_info[:2])
        else:
            includedir = os.path.basename(includedir)
            if includedir == "Headers":
                # This is a copy of Python as shipped with Xcode
                includedir = "python%d.%d%s" % (sys.version_info[:2] + (sys.abiflags,))

        if configdir is None:
            configdir = "config"
        else:
            configdir = os.path.basename(configdir)

        indir = os.path.dirname(os.path.join(info["location"], info["name"]))
        outdir = os.path.dirname(os.path.join(dst, info["name"]))
        if os.path.exists(outdir):
            # Python framework has already been created.
            return

        self.mkpath(os.path.join(outdir, "Resources"))
        pydir = "python%s.%s" % (sys.version_info[:2])

        # Create a symlink "for Python.frameworks/Versions/Current". This
        # is required for the Mac App-store.
        make_symlink(
            os.path.basename(outdir), os.path.join(os.path.dirname(outdir), "Current")
        )

        # Likewise for two links in the root of the framework:
        make_symlink(
            "Versions/Current/Resources",
            os.path.join(os.path.dirname(os.path.dirname(outdir)), "Resources"),
        )
        make_symlink(
            os.path.join("Versions/Current", PYTHONFRAMEWORK),
            os.path.join(os.path.dirname(os.path.dirname(outdir)), PYTHONFRAMEWORK),
        )

        # Experiment for issue 57
        if not os.path.exists(os.path.join(indir, "include")):
            alt = os.path.join(indir, "Versions/Current")
            if os.path.exists(os.path.join(alt, "include")):
                indir = alt

        # distutils looks for some files relative to sys.executable, which
        # means they have to be in the framework...
        self.mkpath(os.path.join(outdir, "include"))
        self.mkpath(os.path.join(outdir, "include", includedir))
        self.mkpath(os.path.join(outdir, "lib"))
        self.mkpath(os.path.join(outdir, "lib", pydir))
        self.mkpath(os.path.join(outdir, "lib", pydir, configdir))

        fmwkfiles = [
            os.path.basename(info["name"]),
            "Resources/Info.plist",
            "include/%s/pyconfig.h" % (includedir),
        ]
        if "_sysconfigdata" not in sys.modules:
            fmwkfiles.append("lib/%s/%s/Makefile" % (pydir, configdir))

        for fn in fmwkfiles:
            self.copy_file(os.path.join(indir, fn), os.path.join(outdir, fn))

    def fixup_distribution(self):
        dist = self.distribution

        # Trying to obtain app and plugin from dist for backward compatibility
        # reasons.
        app = dist.app
        plugin = dist.plugin
        # If we can get suitable values from self.app and self.plugin,
        # we prefer them.
        if self.app is not None or self.plugin is not None:
            app = self.app
            plugin = self.plugin

        # Convert our args into target objects.
        dist.app = FixupTargets(app, "script")
        dist.plugin = FixupTargets(plugin, "script")
        if dist.app and dist.plugin:
            raise DistutilsOptionError(
                "You must specify either app or plugin, not both"
            )
        elif dist.app:
            self.style = "app"
            self.targets = dist.app
        elif dist.plugin:
            self.style = "plugin"
            self.targets = dist.plugin
        else:
            raise DistutilsOptionError("You must specify either app or plugin")
        if len(self.targets) != 1:
            raise DistutilsOptionError("Multiple targets not currently supported")
        if not self.extension:
            self.extension = "." + self.style

        # make sure all targets use the same directory, this is
        # also the directory where the pythonXX.dylib must reside
        paths = set()
        for target in self.targets:
            paths.add(os.path.dirname(target.get_dest_base()))

        if len(paths) > 1:
            raise DistutilsOptionError(
                "all targets must use the same directory: %s" % (list(paths),)
            )
        if paths:
            app_dir = paths.pop()  # the only element
            if os.path.isabs(app_dir):
                raise DistutilsOptionError(
                    "app directory must be relative: %s" % (app_dir,)
                )
            self.app_dir = os.path.join(self.dist_dir, app_dir)
            self.mkpath(self.app_dir)
        else:
            # Do we allow to specify no targets?
            # We can at least build a zipfile...
            self.app_dir = self.lib_dir

    def initialize_prescripts(self):
        prescripts = []
        prescripts.append("reset_sys_path")
        if self.semi_standalone:
            prescripts.append("semi_standalone_path")

        if 0 and sys.version_info[:2] >= (3, 2) and not self.alias:
            # Python 3.2 or later requires a more complicated
            # bootstrap
            prescripts.append("import_encodings")

        if os.path.exists(os.path.join(sys.prefix, "pyvenv.cfg")):
            # We're in a venv, which means sys.path
            # will be broken in alias builds unless we fix
            # it.
            real_prefix = None
            global_site_packages = False
            with open(os.path.join(sys.prefix, "pyvenv.cfg")) as fp:

                for ln in fp:
                    if ln.startswith("home = "):
                        _, home_path = ln.split("=", 1)
                        real_prefix = os.path.dirname(home_path.strip())

                    elif ln.startswith("include-system-site-packages = "):
                        _, global_site_packages = ln.split("=", 1)
                        global_site_packages = global_site_packages == "true"

            if real_prefix is None:
                raise DistutilsPlatformError(
                    "Pyvenv detected, cannot determine base prefix"
                )

            if self.site_packages or self.alias:
                print("Add paths for VENV", real_prefix, global_site_packages)
                prescripts.append("virtualenv_site_packages")
                prescripts.append(
                    StringIO(
                        "_site_packages(%r, %r, %d)"
                        % (sys.prefix, real_prefix, global_site_packages)
                    )
                )

        elif os.path.exists(os.path.join(sys.prefix, ".Python")):
            # We're in a virtualenv, which means sys.path
            # will be broken in alias builds unless we fix
            # it.
            if self.alias or self.semi_standalone:
                prescripts.append("virtualenv")
                prescripts.append(
                    StringIO("_fixup_virtualenv(%r)" % (sys.real_prefix,))
                )

            if self.site_packages or self.alias:
                import site

                global_site_packages = not os.path.exists(
                    os.path.join(
                        os.path.dirname(site.__file__), "no-global-site-packages.txt"
                    )
                )

                prescripts.append("virtualenv_site_packages")
                prescripts.append(
                    StringIO(
                        "_site_packages(%r, %r, %d)"
                        % (sys.prefix, sys.real_prefix, global_site_packages)
                    )
                )

        elif self.site_packages or self.alias:
            prescripts.append("site_packages")

        if is_system():
            prescripts.append("system_path_extras")

        included_subpkg = [pkg for pkg in self.packages if "." in pkg]
        if included_subpkg:
            prescripts.append("setup_included_subpackages")
            prescripts.append(StringIO("_path_hooks = %r" % (included_subpkg)))

        if self.emulate_shell_environment:
            prescripts.append("emulate_shell_environment")

        if self.argv_emulation and self.style == "app":
            prescripts.append("argv_emulation")
            if "CFBundleDocumentTypes" not in self.plist:
                self.plist["CFBundleDocumentTypes"] = [
                    {
                        "CFBundleTypeOSTypes": ["****", "fold", "disk"],
                        "CFBundleTypeRole": "Viewer",
                    },
                ]

        if self.argv_inject is not None:
            prescripts.append("argv_inject")
            prescripts.append(StringIO("_argv_inject(%r)\n" % (self.argv_inject,)))

        if self.style == "app" and not self.no_chdir:
            prescripts.append("chdir_resource")
        if not self.alias:
            prescripts.append("disable_linecache")
            prescripts.append("boot_" + self.style)
        else:

            # Add ctypes prescript because it is needed to
            # find libraries in the bundle, but we don't run
            # recipes and hence the ctypes recipe is not used
            # for alias builds.
            prescripts.append("ctypes_setup")

            if self.additional_paths:
                prescripts.append("path_inject")
                prescripts.append(
                    StringIO("_path_inject(%r)\n" % (self.additional_paths,))
                )
            prescripts.append("boot_alias" + self.style)
        newprescripts = []
        for s in prescripts:
            if isinstance(s, basestring):
                newprescripts.append(self.get_bootstrap("py2app.bootstrap." + s))
            else:
                newprescripts.append(s)

        for target in self.targets:
            prescripts = getattr(target, "prescripts", [])
            target.prescripts = newprescripts + prescripts

    def get_bootstrap(self, bootstrap):
        if isinstance(bootstrap, basestring):
            if not os.path.exists(bootstrap):
                bootstrap = imp_find_module(bootstrap)[1]
        return bootstrap

    def get_bootstrap_data(self, bootstrap):
        bootstrap = self.get_bootstrap(bootstrap)
        if not isinstance(bootstrap, basestring):
            return bootstrap.getvalue()
        else:
            with open(bootstrap, "rU") as fp:
                return fp.read()

    def create_pluginbundle(self, target, script, use_runtime_preference=True):
        base = target.get_dest_base()
        appdir = os.path.join(self.dist_dir, os.path.dirname(base))
        appname = self.get_appname()
        print("*** creating plugin bundle: %s ***" % (appname,))
        if self.runtime_preferences and use_runtime_preference:
            self.plist.setdefault("PyRuntimeLocations", self.runtime_preferences)
        appdir, plist = create_pluginbundle(
            appdir,
            appname,
            plist=self.plist,
            extension=self.extension,
            arch=self.arch,
        )
        appdir = fsencoding(appdir)
        resdir = os.path.join(appdir, "Contents", "Resources")
        return appdir, resdir, plist

    def create_appbundle(self, target, script, use_runtime_preference=True):
        base = target.get_dest_base()
        appdir = os.path.join(self.dist_dir, os.path.dirname(base))
        appname = self.get_appname()
        print("*** creating application bundle: %s ***" % (appname,))
        if self.runtime_preferences and use_runtime_preference:
            self.plist.setdefault("PyRuntimeLocations", self.runtime_preferences)
        pythonInfo = self.plist.setdefault("PythonInfoDict", {})
        py2appInfo = pythonInfo.setdefault("py2app", {})
        py2appInfo.update({"alias": bool(self.alias)})
        appdir, plist = create_appbundle(
            appdir,
            appname,
            plist=self.plist,
            extension=self.extension,
            arch=self.arch,
            redirect_stdout=self.redirect_stdout_to_asl,
            use_old_sdk=self.use_old_sdk,
        )
        appdir = fsencoding(appdir)
        resdir = os.path.join(appdir, "Contents", "Resources")
        return appdir, resdir, plist

    def create_bundle(self, target, script, use_runtime_preference=True):
        fn = getattr(self, "create_%sbundle" % (self.style,))
        return fn(target, script, use_runtime_preference=use_runtime_preference)

    def iter_frameworks(self):
        for fn in self.frameworks:
            fmwk = macholib.dyld.framework_info(fn)
            if fmwk is None:
                yield fn
            else:
                basename = fmwk["shortname"] + ".framework"
                yield os.path.join(fmwk["location"], basename)

    def build_alias_executable(self, target, script, extra_scripts):
        # Build an alias executable for the target
        appdir, resdir, plist = self.create_bundle(target, script)

        # symlink python executable
        execdst = os.path.join(appdir, "Contents", "MacOS", "python")
        prefixPathExecutable = os.path.join(sys.prefix, "bin", "python")
        if os.path.exists(prefixPathExecutable):
            pyExecutable = prefixPathExecutable
        else:
            pyExecutable = sys.executable
        make_symlink(pyExecutable, execdst)

        # make PYTHONHOME
        pyhome = os.path.join(resdir, "lib", "python%d.%d" % (sys.version_info[:2]))
        realhome = os.path.join(
            sys.prefix, "lib", "python%d.%d" % (sys.version_info[:2])
        )
        makedirs(pyhome)
        if self.optimize:
            make_symlink("../../site.pyo", os.path.join(pyhome, "site.pyo"))
        else:
            make_symlink("../../site.pyc", os.path.join(pyhome, "site.pyc"))
        make_symlink(os.path.join(realhome, "config"), os.path.join(pyhome, "config"))

        # symlink data files
        for src, dest in self.iter_data_files():
            dest = os.path.join(resdir, dest)
            if src == dest:
                continue
            makedirs(os.path.dirname(dest))
            try:
                copy_resource(src, dest, dry_run=self.dry_run, symlink=1)
            except:  # noqa: E722,B001
                import traceback

                traceback.print_exc()
                raise

        plugindir = os.path.join(appdir, "Contents", "Library")
        for src, dest in self.iter_extra_plugins():
            dest = os.path.join(plugindir, dest)
            if src == dest:
                continue

            makedirs(os.path.dirname(dest))
            try:
                copy_resource(src, dest, dry_run=self.dry_run)
            except:  # noqa: E722,B001
                import traceback

                traceback.print_exc()
                raise

        # symlink frameworks
        for src in self.iter_frameworks():
            dest = os.path.join(appdir, "Contents", "Frameworks", os.path.basename(src))
            if src == dest:
                continue
            makedirs(os.path.dirname(dest))
            make_symlink(os.path.abspath(src), dest)

        self.compile_datamodels(resdir)
        self.compile_mappingmodels(resdir)

        bootfn = "__boot__"
        bootfile = open(os.path.join(resdir, bootfn + ".py"), "w")
        for fn in target.prescripts:
            bootfile.write(self.get_bootstrap_data(fn))
            bootfile.write("\n\n")
        bootfile.write("DEFAULT_SCRIPT=%r\n" % (os.path.realpath(script),))
        script_map = {}
        for fn in extra_scripts:
            tgt = os.path.realpath(fn)
            fn = os.path.basename(fn)
            if fn.endswith(".py"):
                script_map[fn[:-3]] = tgt
            elif fn.endswith(".py"):
                script_map[fn[:-4]] = tgt
            else:
                script_map[fn] = tgt

        bootfile.write("SCRIPT_MAP=%r\n" % (script_map,))
        bootfile.write("try:\n")
        bootfile.write("    _run()\n")
        bootfile.write("except KeyboardInterrupt:\n")
        bootfile.write("    pass\n")
        bootfile.close()

        target.appdir = appdir
        return appdir

    def copy_loader_paths(self, sourcefn, destfn):
        todo = [(sourcefn, destfn)]

        while todo:
            next = []
            for item in todo:
                for s, d in loader_paths(*item):
                    if os.path.exists(d):
                        continue
                    next.append((s, d))
                    if not self.dry_run:
                        if not os.path.exists(os.path.dirname(d)):
                            os.makedirs(os.path.dirname(d))
                    copy_file(s, d, dry_run=self.dry_run)
            todo = next

    def build_executable(
        self, target, arcname, pkgexts, copyexts, script, extra_scripts
    ):
        # Build an executable for the target
        appdir, resdir, plist = self.create_bundle(target, script)
        self.appdir = appdir
        self.resdir = resdir
        self.plist = plist

        for fn in extra_scripts:
            if fn.endswith(".py"):
                fn = fn[:-3]
            elif fn.endswith(".pyw"):
                fn = fn[:-4]

            src_fn = script_executable(
                arch=self.arch, secondary=False, use_old_sdk=self.use_old_sdk
            )
            tgt_fn = os.path.join(
                self.appdir, "Contents", "MacOS", os.path.basename(fn)
            )
            mergecopy(src_fn, tgt_fn)
            make_exec(tgt_fn)

        site_path = os.path.join(resdir, "site.py")
        byte_compile(
            [SourceModule("site", site_path)],
            target_dir=resdir,
            optimize=self.optimize,
            force=self.force,
            verbose=self.verbose,
            dry_run=self.dry_run,
        )
        if not self.dry_run:
            os.unlink(site_path)

        includedir = get_config_var("CONFINCLUDEPY")
        configdir = get_config_var("LIBPL")

        if includedir is None:
            includedir = "python%d.%d" % (sys.version_info[:2])
        else:
            includedir = os.path.basename(includedir)

        if configdir is None:
            configdir = "config"
        else:
            configdir = os.path.basename(configdir)

        self.compile_datamodels(resdir)
        self.compile_mappingmodels(resdir)

        bootfn = "__boot__"
        bootfile = open(os.path.join(resdir, bootfn + ".py"), "w")
        for fn in target.prescripts:
            bootfile.write(self.get_bootstrap_data(fn))
            bootfile.write("\n\n")

        bootfile.write("DEFAULT_SCRIPT=%r\n" % (os.path.basename(script),))

        script_map = {}
        for fn in extra_scripts:
            fn = os.path.basename(fn)
            if fn.endswith(".py"):
                script_map[fn[:-3]] = fn
            elif fn.endswith(".py"):
                script_map[fn[:-4]] = fn
            else:
                script_map[fn] = fn

        bootfile.write("SCRIPT_MAP=%r\n" % (script_map,))
        bootfile.write("_run()\n")
        bootfile.close()

        self.copy_file(script, resdir)
        for fn in extra_scripts:
            self.copy_file(fn, resdir)

        pydir = os.path.join(resdir, "lib", "python%s.%s" % (sys.version_info[:2]))

        if sys.version_info[0] == 2 or self.semi_standalone:
            arcdir = os.path.join(resdir, "lib", "python%d.%d" % (sys.version_info[:2]))
        else:
            arcdir = os.path.join(resdir, "lib")
        realhome = os.path.join(
            sys.prefix, "lib", "python%d.%d" % (sys.version_info[:2])
        )
        self.mkpath(pydir)

        # The site.py file needs to be a two locations
        # 1) in lib/pythonX.Y, to be found during normal startup and
        #    by the 'python' executable
        # 2) in the resources directory next to the script for
        #    semistandalone builds (the lib/pythonX.Y directory is too
        #    late on sys.path to be found in that case).
        #
        if self.optimize:
            make_symlink("../../site.pyo", os.path.join(pydir, "site.pyo"))
        else:
            make_symlink("../../site.pyc", os.path.join(pydir, "site.pyc"))
        cfgdir = os.path.join(pydir, configdir)
        realcfg = os.path.join(realhome, configdir)
        real_include = os.path.join(sys.prefix, "include")
        if self.semi_standalone:
            make_symlink(realcfg, cfgdir)
            make_symlink(real_include, os.path.join(resdir, "include"))
        else:
            self.mkpath(cfgdir)
            if "_sysconfigdata" not in sys.modules:
                # Recent enough versions of Python 2.7 and 3.x have
                # an _sysconfigdata module and don't need the Makefile
                # to provide the sysconfig data interface. Don't copy
                # them.
                for fn in "Makefile", "Setup", "Setup.local", "Setup.config":
                    rfn = os.path.join(realcfg, fn)
                    if os.path.exists(rfn):
                        self.copy_file(rfn, os.path.join(cfgdir, fn))

            inc_dir = os.path.join(resdir, "include", includedir)
            self.mkpath(inc_dir)
            self.copy_file(get_config_h_filename(), os.path.join(inc_dir, "pyconfig.h"))

        self.copy_file(arcname, arcdir)
        if sys.version_info[0] != 2:
            import zlib

            self.copy_file(zlib.__file__, os.path.dirname(arcdir))

        ext_dir = os.path.join(pydir, os.path.basename(self.ext_dir))
        self.copy_tree(self.ext_dir, ext_dir, preserve_symlinks=True)
        self.copy_tree(
            self.framework_dir,
            os.path.join(appdir, "Contents", "Frameworks"),
            preserve_symlinks=True,
        )
        for pkg_name in self.packages:
            pkg = self.get_bootstrap(pkg_name)

            if self.semi_standalone:
                # For semi-standalone builds don't copy packages
                # from the stdlib into the app bundle, even when
                # they are mentioned in self.packages.
                p = Package(pkg_name, pkg)
                if not not_stdlib_filter(p):
                    continue

            dst = os.path.join(pydir, pkg_name)
            if os.path.isdir(pkg):
                self.mkpath(dst)
                self.copy_tree(pkg, dst)
            else:
                self.copy_file(pkg, dst + ".py")

            # The python files should be bytecompiled
            # here (see issue 101)

        for copyext in copyexts:
            fn = os.path.join(
                ext_dir,
                (
                    copyext.identifier.replace(".", os.sep)
                    + os.path.splitext(copyext.filename)[1]
                ),
            )
            self.mkpath(os.path.dirname(fn))
            copy_file(copyext.filename, fn, dry_run=self.dry_run)

            # MachoStandalone does not support '@loader_path' (and cannot in its
            # current form). Check for "@loader_path" in the load commands of
            # the extension and copy those files into the bundle as well.
            self.copy_loader_paths(copyext.filename, fn)

        for src, dest in self.iter_data_files():
            dest = os.path.join(resdir, dest)
            if src == dest:
                continue
            makedirs(os.path.dirname(dest))
            copy_resource(src, dest, dry_run=self.dry_run)

        plugindir = os.path.join(appdir, "Contents", "Library")
        for src, dest in self.iter_extra_plugins():
            dest = os.path.join(plugindir, dest)
            if src == dest:
                continue

            makedirs(os.path.dirname(dest))
            copy_resource(src, dest, dry_run=self.dry_run)

        target.appdir = appdir
        return appdir

    def create_loader(self, item):
        # Hm, how to avoid needless recreation of this file?
        slashname = item.identifier.replace(".", os.sep)
        pathname = os.path.join(self.temp_dir, "%s.py" % slashname)
        if os.path.exists(pathname):
            if self.verbose:
                print("skipping python loader for extension %r" % (item.identifier,))
        else:
            self.mkpath(os.path.dirname(pathname))
            # and what about dry_run?
            if self.verbose:
                print("creating python loader for extension %r" % (item.identifier,))

            fname = slashname + os.path.splitext(item.filename)[1]
            source = make_loader(fname)
            if not self.dry_run:
                with open(pathname, "w") as fp:
                    fp.write(source)
            else:
                return
        return SourceModule(item.identifier, pathname)

    def make_lib_archive(self, zip_filename, base_dir, verbose=0, dry_run=0):
        # Like distutils "make_archive", except we can specify the
        # compression to use - default is ZIP_STORED to keep the
        # runtime performance up.
        # Also, we don't append '.zip' to the filename.
        from distutils.dir_util import mkpath

        mkpath(os.path.dirname(zip_filename), dry_run=dry_run)

        if self.compressed:
            compression = zipfile.ZIP_DEFLATED
        else:
            compression = zipfile.ZIP_STORED
        if not dry_run:
            z = zipfile.ZipFile(zip_filename, "w", compression=compression)
            save_cwd = os.getcwd()
            os.chdir(base_dir)
            for dirpath, _dirnames, filenames in os.walk("."):
                if filenames:
                    # Ensure that there are directory entries for
                    # all directories in the zipfile. This is a
                    # workaround for <http://bugs.python.org/issue14905>:
                    # zipimport won't consider 'pkg/foo.py' to be in
                    # namespace package 'pkg' unless there is an
                    # entry for the directory (or there is a
                    # pkg/__init__.py file as well)
                    z.write(dirpath, dirpath)

                for fn in filenames:
                    path = os.path.normpath(os.path.join(dirpath, fn))
                    if os.path.isfile(path):
                        z.write(path, path)

            os.chdir(save_cwd)
            z.close()

        return zip_filename

    def copy_tree(
        self,
        infile,
        outfile,
        preserve_mode=1,
        preserve_times=1,
        preserve_symlinks=0,
        level=1,
        condition=None,
    ):
        """Copy an entire directory tree respecting verbose, dry-run,
        and force flags.

        This version doesn't bork on existing symlinks
        """
        return copy_tree(
            infile,
            outfile,
            preserve_mode,
            preserve_times,
            preserve_symlinks,
            not self.force,
            dry_run=self.dry_run,
            condition=condition,
        )

    def copy_file(self, infile, outfile):
        """
        This version doesn't bork on existing symlinks
        """
        return copy_file(infile, outfile)