Fix -compiler flag for build, dev and generate commands (#3121)

* Fix -compiler flag for build, dev and generate commands

* Update changelog and docs

---------

Co-authored-by: Lea Anthony <lea.anthony@gmail.com>

v2/cmd/wails/flags/generate.go

@@ -2,6 +2,7 @@ package flags
 
 type GenerateModule struct {
 	Common
+	Compiler  string `description:"Use a different go compiler to build, eg go1.15beta1"`
 	Tags      string `description:"Build tags to pass to Go compiler. Must be quoted. Space or comma (but not both) separated"`
 	Verbosity int    `name:"v" description:"Verbosity level (0 = quiet, 1 = normal, 2 = verbose)"`
 }
@@ -12,3 +13,9 @@ type GenerateTemplate struct {
 	Frontend string `description:"Frontend to use for the template"`
 	Quiet    bool   `description:"Suppress output"`
 }
+
+func (c *GenerateModule) Default() *GenerateModule {
+	return &GenerateModule{
+		Compiler: "go",
+	}
+}

v2/cmd/wails/generate.go

@@ -48,6 +48,7 @@ func generateModule(f *flags.GenerateModule) error {
 	}
 
 	_, err = bindings.GenerateBindings(bindings.Options{
+		Compiler:     f.Compiler,
 		Tags:         buildTags,
 		TsPrefix:     projectConfig.Bindings.TsGeneration.Prefix,
 		TsSuffix:     projectConfig.Bindings.TsGeneration.Suffix,

v2/cmd/wails/internal/dev/dev.go

@@ -61,7 +61,7 @@ func Application(f *flags.Dev, logger *clilogger.CLILogger) error {
 	}
 
 	// Run go mod tidy to ensure we're up-to-date
-	err = runCommand(cwd, false, "go", "mod", "tidy")
+	err = runCommand(cwd, false, f.Compiler, "mod", "tidy")
 	if err != nil {
 		return err
 	}

v2/pkg/commands/bindings/bindings.go

@@ -18,6 +18,7 @@ type Options struct {
 	Filename         string
 	Tags             []string
 	ProjectDirectory string
+	Compiler         string
 	GoModTidy        bool
 	TsPrefix         string
 	TsSuffix         string
@@ -46,13 +47,13 @@ func GenerateBindings(options Options) (string, error) {
 	tagString := buildtags.Stringify(genModuleTags)
 
 	if options.GoModTidy {
-		stdout, stderr, err = shell.RunCommand(workingDirectory, "go", "mod", "tidy")
+		stdout, stderr, err = shell.RunCommand(workingDirectory, options.Compiler, "mod", "tidy")
 		if err != nil {
 			return stdout, fmt.Errorf("%s\n%s\n%s", stdout, stderr, err)
 		}
 	}
 
-	stdout, stderr, err = shell.RunCommand(workingDirectory, "go", "build", "-tags", tagString, "-o", filename)
+	stdout, stderr, err = shell.RunCommand(workingDirectory, options.Compiler, "build", "-tags", tagString, "-o", filename)
 	if err != nil {
 		return stdout, fmt.Errorf("%s\n%s\n%s", stdout, stderr, err)
 	}

v2/pkg/commands/bindings/bindings_test.go

@@ -1,13 +1,14 @@
 package bindings
 
 import (
-	"github.com/matryer/is"
-	"github.com/wailsapp/wails/v2/pkg/templates"
 	"os"
 	"path/filepath"
 	"runtime"
 	"strings"
 	"testing"
+
+	"github.com/matryer/is"
+	"github.com/wailsapp/wails/v2/pkg/templates"
 )
 
 const standardBindings = `// @ts-check
@@ -80,6 +81,7 @@ func TestGenerateBindings(t *testing.T) {
 			name: "should generate standard bindings with no user tags",
 			options: Options{
 				ProjectDirectory: projectDir,
+				Compiler:         "go",
 				GoModTidy:        true,
 			},
 			expectedBindings: standardBindings,
@@ -90,6 +92,7 @@ func TestGenerateBindings(t *testing.T) {
 			name: "should generate bindings when given tags",
 			options: Options{
 				ProjectDirectory: projectDir,
+				Compiler:         "go",
 				Tags:             []string{"test"},
 				GoModTidy:        true,
 			},
@@ -101,6 +104,7 @@ func TestGenerateBindings(t *testing.T) {
 			name: "should generate obfuscated bindings",
 			options: Options{
 				ProjectDirectory: projectDir,
+				Compiler:         "go",
 				Tags:             []string{"obfuscated"},
 				GoModTidy:        true,
 			},

v2/pkg/commands/build/build.go

@@ -229,6 +229,7 @@ func GenerateBindings(buildOptions *Options) error {
 
 	// Generate Bindings
 	output, err := bindings.GenerateBindings(bindings.Options{
+		Compiler:     buildOptions.Compiler,
 		Tags:         buildOptions.UserTags,
 		GoModTidy:    !buildOptions.SkipModTidy,
 		TsPrefix:     buildOptions.ProjectData.Bindings.TsGeneration.Prefix,

website/docs/reference/cli.mdx

@@ -231,6 +231,11 @@ For more details on creating templates, consult the [Templates guide](../guides/
 
 The `wails generate module` command allows you to manually generate the `wailsjs` directory for your application.
 
+| Flag                 | Description                                                 | Default |
+|:---------------------|:------------------------------------------------------------|:--------|
+| -compiler "compiler" | Use a different go compiler to build, eg go1.15beta1        | go      |
+| -tags "extra tags"   | Build tags to pass to compiler (quoted and space separated) |         |
+
 ## update
 
 `wails update` will update the version of the Wails CLI.

website/src/pages/changelog.mdx

@@ -23,6 +23,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 - Docs for IsZoomControlEnabled and ZoomFactor. Fixed by @leaanthony in [PR](https://github.com/wailsapp/wails/pull/3137)
+- Fixed `-compiler` flag for `wails build`, `wails dev` and `wails generate module`. Fixed in [PR](https://github.com/wailsapp/wails/pull/3121) by [@xtrafrancyz](https://github.com/xtrafrancyz)
 
 ## v2.7.1 - 2023-12-10