homebrew: add custom install command

README.md

@@ -280,9 +280,14 @@ brew:
     - bash
 
   # Packages that run as a service
-  plist:
+  plist:|
     <?xml version="1.0" encoding="UTF-8"?>
     ...
+
+  # Custom install script for brew. Default: "bin.install "program"
+  install:|
+    bin.install "program"
+    ...
 ```
 
 By defining the `brew` section, GoReleaser will take care of publishing the Homebrew tap.

config/config.go

@@ -12,6 +12,7 @@ type Homebrew struct {
 	Folder       string
 	Caveats      string
 	Plist        string
+	Install      string
 	Dependencies []string
 	Conflicts    []string
 }

pipeline/brew/brew.go

@@ -37,10 +37,22 @@ const formula = `class {{ .Name }} < Formula
   {{- end }}
   {{- end }}
 
+  {{- if .Install }}
+
+  def install
+    {{- range $index, $element := .Install }}
+    {{ . -}}
+		{{- end }}
+  end
+
+	{{- else }}
+
   def install
     bin.install "{{ .BinaryName }}"
   end
 
+	{{- end }}
+
   {{- if .Caveats }}
 
   def caveats
@@ -71,6 +83,7 @@ type templateData struct {
 	Format       string
 	SHA256       string
 	Plist        string
+	Install      []string
 	Dependencies []string
 	Conflicts    []string
 }
@@ -188,6 +201,7 @@ func dataFor(
 		Dependencies: ctx.Config.Brew.Dependencies,
 		Conflicts:    ctx.Config.Brew.Conflicts,
 		Plist:        ctx.Config.Brew.Plist,
+		Install:      strings.Split(ctx.Config.Brew.Install, "\n"),
 	}, err
 }
 

pipeline/brew/brew_test.go

@@ -29,7 +29,6 @@ var defaultTemplateData = templateData{
 	File:       "test_Darwin_x86_64",
 	SHA256:     "1633f61598ab0791e213135923624eb342196b3494909c91899bcd0560f84c68",
 	Format:     "tar.gz",
-	Plist:      "it works",
 }
 
 func assertDefaultTemplateData(t *testing.T, formulae string) {
@@ -39,7 +38,6 @@ func assertDefaultTemplateData(t *testing.T, formulae string) {
 	assert.Contains(formulae, "url \"https://github.com/caarlos0/test/releases/download/v0.1.3/test_Darwin_x86_64.tar.gz\"")
 	assert.Contains(formulae, "sha256 \"1633f61598ab0791e213135923624eb342196b3494909c91899bcd0560f84c68\"")
 	assert.Contains(formulae, "version \"0.1.3\"")
-	assert.Contains(formulae, "bin.install \"test\"")
 }
 
 func TestFullFormulae(t *testing.T) {
@@ -48,6 +46,8 @@ func TestFullFormulae(t *testing.T) {
 	data.Caveats = "Here are some caveats"
 	data.Dependencies = []string{"gtk", "git"}
 	data.Conflicts = []string{"conflicting_dep"}
+	data.Plist = "it works"
+	data.Install = []string{"custom install script", "another install script"}
 	out, err := doBuildFormula(data)
 	assert.NoError(err)
 	formulae := out.String()
@@ -57,6 +57,8 @@ func TestFullFormulae(t *testing.T) {
 	assert.Contains(formulae, "depends_on \"gtk\"")
 	assert.Contains(formulae, "depends_on \"git\"")
 	assert.Contains(formulae, "conflicts_with \"conflicting_dep\"")
+	assert.Contains(formulae, "custom install script")
+	assert.Contains(formulae, "another install script")
 	assert.Contains(formulae, "def plist;")
 }
 
@@ -66,6 +68,8 @@ func TestFormulaeSimple(t *testing.T) {
 	assert.NoError(err)
 	formulae := out.String()
 	assertDefaultTemplateData(t, formulae)
+	assert.Contains(formulae, "bin.install \"test\"")
 	assert.NotContains(formulae, "def caveats")
 	assert.NotContains(formulae, "depends_on")
+	assert.NotContains(formulae, "def plist;")
 }