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A simple configuration manager for bundler's local repo settings.

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Command: gem local

Lets you register and manage local bundler git repos per-project.

If you're developing a gem alongside projects that consume them, you've probably used gem 'name', path: '~/local/path/to/gem' in your Gemfile before.

Of course, if you accidentally commit this, you'll probably cause somebody or someserver some grief down the line. This is why local bundler git repos exist: so that by using gem 'name', git: 'repo', branch: 'master', you can program against a local gem dependency while always leaving your Gemfile in a valid state.

However, actually using bundle config local.xxx is a bit of a pain:

  • you have to remember to use the --local flag as well every invocation, otherwise you might bork other local projects using the dependency
  • you have to remember to unset the configuration if you check out a version of your Gemfile without the gem git:, branch: bit
  • you have to remember what that configuration was and to reset it when you checkout back to your branch
  • if you frequently develop against local gems, you have to do this for every gem, in every project, and remember where you are in the above workflow every time you revisit a project after a few days

gem local makes this a little less of a hassle.

Installation

Install this rubygems extension through rubygems:

gem install gem-local

Usage

After installing the gem, inside your project, run:

gem local install

This isn't strictly neccessary--it just ensures that your local .bundle/config and .gemlocal files don't get committed.

Adding local repos

Define your project dependencies that you have local copies of, and their locations:

gem local add my-dependency ~/code/ruby/gems/my-dependency

This lets git local know about this dependency. Note that relative paths are supported, and ~ gets expanded, which is the format bundle config expects.

Using local repos

When you want to use your local copy, run

gem local use my-dependency

It updates the local bundler config (not global, as bundler does by default, which many guides run with) to refer to the path you supplied it.

Ignoring local repos

When you want to use the standard remote version of the dependency again, run

gem local ignore my-dependency

This will remove it from your bundler config and update your .gitlocal accordingly. If you've ever seen the message:

Cannot use local override for gem-name at path/to/gem because :branch is not specified in Gemfile.
Specify a branch or use `bundle config --delete` to remove the local override

you've probably checked out a different version of your Gemfile without updating your bundle config. Now you can do so with gem local off gem-name and not completely forget how to re-configure things when you check your WIP branch back out.

Multiple gems at once

The use and ignore commands (and their aliases--see them in help <cmd>) work for multiple gems at once, as well as all registered gems if you don't specify any.

gem local status
# off: foo @ /Users/rubyist/code/oss/foo
# on:  bar @ /Users/rubyist/code/oss/bar
# on:  fizz @ /Users/rubyist/code/oss/fizz
# on:  buzz @ /Users/rubyist/code/oss/buzz
# off: metasyntactic @ /Users/rubyist/code/oss/variable

gem local ignore bar fizz
# off: foo @ /Users/rubyist/code/oss/foo
# off: bar @ /Users/rubyist/code/oss/bar
# off: fizz @ /Users/rubyist/code/oss/fizz
# on:  buzz @ /Users/rubyist/code/oss/buzz
# off: metasyntactic @ /Users/rubyist/code/oss/variable

gem local use
# on:  foo @ /Users/rubyist/code/oss/foo
# on:  bar @ /Users/rubyist/code/oss/bar
# on:  fizz @ /Users/rubyist/code/oss/fizz
# on:  buzz @ /Users/rubyist/code/oss/buzz
# on:  metasyntactic @ /Users/rubyist/code/oss/variable

gem local ignore
# off: foo @ /Users/rubyist/code/oss/foo
# off: bar @ /Users/rubyist/code/oss/bar
# off: fizz @ /Users/rubyist/code/oss/fizz
# off: buzz @ /Users/rubyist/code/oss/buzz
# off: metasyntactic @ /Users/rubyist/code/oss/variable

Rebuilding the local gem db

If manual invocations of bundle config --local local... cause your .gemlocal file to get out of sync with bundler's settings in .bundle/config, run

gem local rebuild

to update your file against bundler's version.

Other commands

For other commands and usage, see

gem local help

For full details of a command, for example install, run

gem local help install

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/christhekeele/gem-local.

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A simple configuration manager for bundler's local repo settings.

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