Define build_envs task at GoGem::RakeTask

.github/workflows/build.yml

@@ -99,9 +99,19 @@ jobs:
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ruby
+          bundler-cache: false
 
-      - name: export CGO_CFLAGS
-        run: ruby -e "puts %Q(CGO_CFLAGS=-I#{RbConfig::CONFIG['rubyarchhdrdir']} -I#{RbConfig::CONFIG['rubyhdrdir']})" >> $GITHUB_ENV
+      # FIXME: setup-go installs cache in `vendor/` and setup-ruby installs cache in `vendor/bundle/`
+      #        If we use the cache in setup-go and setup-ruby at the same time, this doesn't work well because they use the same directory.
+      #        Therefore, the installation location needs to be changed from the setup-ruby default.
+      - name: bundle install
+        run: |
+          set -xe
+          bundle config --local path ruby-vendor/bundle
+          bundle install --jobs 4
+
+      - name: export CGO_CFLAGS for golangci-lint
+        run: bundle exec rake go:build_envs[CGO_CFLAGS] >> $GITHUB_ENV
 
       - run: echo $CGO_CFLAGS
 

_gem/README.md

@@ -49,6 +49,7 @@ Following tasks are generated
 * `rake go:test`
 * `rake go:testrace`
 * `rake go:fmt`
+* `rake go:build_envs`
 
 #### Example (With config)
 ```ruby
@@ -68,6 +69,7 @@ Following tasks are generated
 * `rake go5:test`
 * `rake go5:testrace`
 * `rake go5:fmt`
+* `rake go5:build_envs`
 
 #### Example (Add additional tasks)
 ```ruby
@@ -89,6 +91,24 @@ namespace :go do
 end
 ```
 
+#### Example (Use [golangci/golangci-lint-action](https://github.com/golangci/golangci-lint-action))
+```yml
+jobs:
+  go-lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+      - uses: ruby/setup-ruby@v1
+
+      - name: export CGO_CFLAGS for golangci-lint
+        run: bundle exec rake go:build_envs[CGO_CFLAGS] >> $GITHUB_ENV
+
+      - name: Run golangci-lint
+        uses: golangci/golangci-lint-action@v6
+```
+
 #### Available configurations
 * `task_namespace` : task namespace (default: `:go`)
 * `go_bin_path` : path to go binary (default: `"go"`)

_gem/lib/go_gem/rake_task.rb

@@ -86,6 +86,7 @@ def initialize(gem_name)
         define_go_test_task
         define_go_testrace_task
         define_go_fmt_task
+        define_go_build_envs_task
       end
     end
 
@@ -168,5 +169,19 @@ def define_go_fmt_task
         end
       end
     end
+
+    def define_go_build_envs_task
+      desc "Print build envs for `go build`"
+      task(:build_envs, [:env_name]) do |_, args|
+        if args[:env_name]
+          value = RakeTask.build_env_vars[args[:env_name]]
+          puts "#{args[:env_name]}=#{value}"
+        else
+          RakeTask.build_env_vars.each do |name, value|
+            puts "#{name}=#{value}"
+          end
+        end
+      end
+    end
   end
 end

_gem/sig/go_gem/rake_task.rbs

@@ -38,6 +38,8 @@ module GoGem
 
     def define_go_fmt_task: () -> void
 
+    def define_go_build_envs_task: () -> void
+
     def within_target_dir: () { () -> void } -> void
 
     def ext_dir: () -> String

_gem/sig/non-gemify/rake.rbs

@@ -1,3 +1,24 @@
+# Monkey path to https://github.com/ruby/gem_rbs_collection/blob/main/gems/rake/13.0/rake.rbs
+
+module Rake
+  class Task
+  end
+
+  class TaskArguments
+    include Enumerable[untyped]
+
+    def []: (untyped index) -> untyped
+    def each: () ?{ (untyped, untyped) -> void } -> void
+  end
+
+  module DSL
+    private
+
+    def task: (*untyped args) ?{ (Rake::Task, Rake::TaskArguments) -> void } -> void
+      | ...
+  end
+end
+
 module FileUtils
   def sh: (Hash[String, String] env, *String cmd, **untyped options) ?{ (bool, Process::Status) -> void } -> void
     | ...

_gem/spec/go_gem/rake_task_spec.rb

@@ -17,6 +17,7 @@
       it { should be_task_defined("go:test") }
       it { should be_task_defined("go:testrace") }
       it { should be_task_defined("go:fmt") }
+      it { should be_task_defined("go:build_envs") }
 
       describe "Add additional tasks" do
         include Rake::DSL