Repositories: by default disable all units except code on forks

As 99% of the time forks are used for contributing code only, so not having
issues, pull requests and similar can avoid confusion. They can still be
enabled in the settings.

For this to become upstreamable it would need to at least be an option, if
the functionality is considered useful to have.

models/unit/unit.go

@@ -90,6 +90,11 @@ var (
 		TypePackages,
 	}
 
+	// ForkRepoUnits contains the default unit types for forks
+	DefaultForkRepoUnits = []Type{
+		TypeCode,
+	}
+
 	// NotAllowedDefaultRepoUnits contains units that can't be default
 	NotAllowedDefaultRepoUnits = []Type{
 		TypeExternalWiki,

modules/repository/create.go

@@ -30,7 +30,7 @@ import (
 )
 
 // CreateRepositoryByExample creates a repository for the user/organization.
-func CreateRepositoryByExample(ctx context.Context, doer, u *user_model.User, repo *repo_model.Repository, overwriteOrAdopt bool) (err error) {
+func CreateRepositoryByExample(ctx context.Context, doer, u *user_model.User, repo *repo_model.Repository, overwriteOrAdopt, isFork bool) (err error) {
 	if err = repo_model.IsUsableRepoName(repo.Name); err != nil {
 		return err
 	}
@@ -67,8 +67,12 @@ func CreateRepositoryByExample(ctx context.Context, doer, u *user_model.User, re
 	}
 
 	// insert units for repo
-	units := make([]repo_model.RepoUnit, 0, len(unit.DefaultRepoUnits))
-	for _, tp := range unit.DefaultRepoUnits {
+	default_units := unit.DefaultRepoUnits
+	if isFork {
+		default_units = unit.DefaultForkRepoUnits
+	}
+	units := make([]repo_model.RepoUnit, 0, len(default_units))
+	for _, tp := range default_units {
 		if tp == unit.TypeIssues {
 			units = append(units, repo_model.RepoUnit{
 				RepoID: repo.ID,
@@ -212,7 +216,7 @@ func CreateRepository(doer, u *user_model.User, opts CreateRepoOptions) (*repo_m
 	var rollbackRepo *repo_model.Repository
 
 	if err := db.WithTx(db.DefaultContext, func(ctx context.Context) error {
-		if err := CreateRepositoryByExample(ctx, doer, u, repo, false); err != nil {
+		if err := CreateRepositoryByExample(ctx, doer, u, repo, false, false); err != nil {
 			return err
 		}
 

modules/repository/generate.go

@@ -319,7 +319,7 @@ func GenerateRepository(ctx context.Context, doer, owner *user_model.User, templ
 		TrustModel:    templateRepo.TrustModel,
 	}
 
-	if err = CreateRepositoryByExample(ctx, doer, owner, generateRepo, false); err != nil {
+	if err = CreateRepositoryByExample(ctx, doer, owner, generateRepo, false, false); err != nil {
 		return nil, err
 	}
 

services/repository/adopt.go

@@ -67,7 +67,7 @@ func AdoptRepository(doer, u *user_model.User, opts repo_module.CreateRepoOption
 			}
 		}
 
-		if err := repo_module.CreateRepositoryByExample(ctx, doer, u, repo, true); err != nil {
+		if err := repo_module.CreateRepositoryByExample(ctx, doer, u, repo, true, false); err != nil {
 			return err
 		}
 		if err := adoptRepository(ctx, repoPath, doer, repo, opts); err != nil {

services/repository/fork.go

@@ -119,7 +119,7 @@ func ForkRepository(ctx context.Context, doer, owner *user_model.User, opts Fork
 	}()
 
 	err = db.WithTx(ctx, func(txCtx context.Context) error {
-		if err = repo_module.CreateRepositoryByExample(txCtx, doer, owner, repo, false); err != nil {
+		if err = repo_module.CreateRepositoryByExample(txCtx, doer, owner, repo, false, true); err != nil {
 			return err
 		}