homebrew: move default install cmd to defaults pipe

pipeline/brew/brew.go

@@ -152,7 +152,6 @@ func dataFor(
 ) (result templateData, err error) {
 	var homepage string
 	var description string
-	var installCmds string
 	rep, _, err := client.Repositories.Get(
 		ctx, ctx.ReleaseRepo.Owner, ctx.ReleaseRepo.Name,
 	)
@@ -177,12 +176,6 @@ func dataFor(
 	} else {
 		description = *rep.Description
 	}
-	if ctx.Config.Brew.Install != "" {
-		installCmds = ctx.Config.Brew.Install
-	} else {
-		installCmds = "bin.install \"" + ctx.Config.Build.BinaryName + "\""
-	}
-
 	return templateData{
 		Name:         formulaNameFor(ctx.Config.Build.BinaryName),
 		Desc:         description,
@@ -198,7 +191,7 @@ func dataFor(
 		Dependencies: ctx.Config.Brew.Dependencies,
 		Conflicts:    ctx.Config.Brew.Conflicts,
 		Plist:        ctx.Config.Brew.Plist,
-		Install:      strings.Split(installCmds, "\n"),
+		Install:      strings.Split(ctx.Config.Brew.Install, "\n"),
 	}, err
 }
 

pipeline/defaults/defaults.go

@@ -69,6 +69,9 @@ func (Pipe) Run(ctx *context.Context) error {
 		}
 		ctx.Config.Archive.Files = files
 	}
+	if ctx.Config.Brew.Install == "" {
+		ctx.Config.Brew.Install = "bin.install \"" + ctx.Config.Build.BinaryName + "\""
+	}
 	return nil
 }
 

pipeline/defaults/defaults_test.go

@@ -25,6 +25,7 @@ func TestFillBasicData(t *testing.T) {
 	assert.Contains(ctx.Config.Build.Goos, "linux")
 	assert.Contains(ctx.Config.Build.Goarch, "386")
 	assert.Contains(ctx.Config.Build.Goarch, "amd64")
+	assert.Contains(ctx.Config.Brew.Install, "bin.install \"goreleaser\"")
 	assert.NotEmpty(
 		ctx.Config.Archive.Replacements,
 		ctx.Config.Archive.NameTemplate,