feat: version in the yaml file

Signed-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com>

.goreleaser.yaml

@@ -1,5 +1,7 @@
 # yaml-language-server: $schema=https://goreleaser.com/static/schema.json
 # vim: set ts=2 sw=2 tw=0 fo=jcroql
+version: 1
+
 env:
   - GO111MODULE=on
 

internal/static/config.yaml

@@ -6,6 +6,8 @@
 # yaml-language-server: $schema=https://goreleaser.com/static/schema.json
 # vim: set ts=2 sw=2 tw=0 fo=cnqoj
 
+version: 1
+
 before:
   hooks:
     # You may remove this if you don't use go modules.

pkg/config/config.go

@@ -11,11 +11,16 @@ import (
 	"strings"
 	"time"
 
+	"github.com/goreleaser/goreleaser/internal/logext"
 	"github.com/goreleaser/goreleaser/internal/yaml"
 	"github.com/goreleaser/nfpm/v2/files"
 	"github.com/invopop/jsonschema"
 )
 
+type Versioned struct {
+	Version int
+}
+
 // Git configs.
 type Git struct {
 	TagSort          string   `yaml:"tag_sort,omitempty" json:"tag_sort,omitempty" jsonschema:"enum=-version:refname,enum=-version:creatordate,default=-version:refname"`
@@ -1144,6 +1149,7 @@ type Source struct {
 
 // Project includes all project configuration.
 type Project struct {
+	Version         int              `yaml:"version" json:"version" jsonschema:"enum=1,default=1"`
 	ProjectName     string           `yaml:"project_name,omitempty" json:"project_name,omitempty"`
 	Env             []string         `yaml:"env,omitempty" json:"env,omitempty"`
 	Release         Release          `yaml:"release,omitempty" json:"release,omitempty"`
@@ -1339,12 +1345,31 @@ func Load(file string) (config Project, err error) {
 	return LoadReader(f)
 }
 
+type VersionError struct {
+	current int
+}
+
+func (e VersionError) Error() string {
+	return fmt.Sprintf(
+		"only configurations files on %s are supported, yours is %s, please update your configuration",
+		logext.Keyword("version: 1"),
+		logext.Keyword(fmt.Sprintf("version: %d", e.current)),
+	)
+}
+
 // LoadReader config via io.Reader.
 func LoadReader(fd io.Reader) (config Project, err error) {
 	data, err := io.ReadAll(fd)
 	if err != nil {
 		return config, err
 	}
+
+	var versioned Versioned
+	_ = yaml.Unmarshal(data, &versioned)
+	if versioned.Version != 0 && versioned.Version != 1 {
+		return config, VersionError{versioned.Version}
+	}
+
 	err = yaml.UnmarshalStrict(data, &config)
 	return config, err
 }

pkg/config/config_test.go

@@ -1,6 +1,7 @@
 package config
 
 import (
+	"bytes"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -72,3 +73,23 @@ func TestConfigWithAnchors(t *testing.T) {
 	_, err := Load("testdata/anchor.yaml")
 	require.NoError(t, err)
 }
+
+func TestVersion(t *testing.T) {
+	t.Run("allow no version", func(t *testing.T) {
+		_, err := LoadReader(bytes.NewReader(nil))
+		require.NoError(t, err)
+	})
+	t.Run("allow v0", func(t *testing.T) {
+		_, err := LoadReader(strings.NewReader("version: 0"))
+		require.NoError(t, err)
+	})
+	t.Run("allow v1", func(t *testing.T) {
+		_, err := LoadReader(strings.NewReader("version: 1"))
+		require.NoError(t, err)
+	})
+	t.Run("do not allow v2", func(t *testing.T) {
+		_, err := LoadReader(strings.NewReader("version: 2"))
+		require.Error(t, err)
+		require.ErrorIs(t, err, VersionError{2})
+	})
+}