nilaway-plugin

NilAway, as its current form, still reports a fair number of false positives. This makes NilAway fail to be merged with golangci-lint and be offered as a linter (see PR#4045).

It's a custom build plugin to add nilaway to golangci-lint.

Usage

Build

The build script lets you do 2 things:

1. Build the nilaway plugin based on the golangci-lint version in your PATH. This could be a binary you compiled yourself (recommended) or a binary you downloaded from brew or some other place.
2. Build the plugin based on a specific version of golangci-lint OR the latest version.

./build local                # use what's in $PATH    - get info about the binary using 'go version'
./build (v1.X.X|latest)      # use a specific version - get info from the go.mod using 'go list'

The build scripts will automatically detect the go version, GOARCH and GOOS. If you don't the build script to overwrite those variables, you can export them beforehand, or set them in your CI pipeline.

Because building plugins need the dependency versions between the plugin and linter to be consistent, the script detects that automatically.

Locally

• clone the repo.
• run ./build.sh local
• copy the produced nilaway.so file to your project dir.
• add the custom plugin config under linters-settings

  custom:
    nilaway:
      path: .plugins/nilaway.so
      # The description of the linter.
      # Optional.
      description: This is a custom nilaway plugin linter.
      # Intended to point to the repo location of the linter.
      # Optional.
      original-url: github.com/moogacs/nilaway-plugin
      settings: # Settings are optional.
        pretty-print: true
        exclude-pkgs: "pkgA,pkgB"
  

GitHub Actions

add this step in your gha workflow file, before the usage of golangci-lint

 - name: golangci-lint-build-plugin
    run: |          
        git clone https://github.com/moogacs/nilaway-plugin.git
        cd nilaway-plugin
        chmod +x build.sh
        ./build.sh v1.X.X # or use 'latest' or 'local'
        # the compiled .so file will be in $GITHUB_WORKSPACE/.plugins OR
        # the current directory.

add the plugin configuration to your golangci.yaml file, just like in the previous section.

Useful links

• for more info about plugins configuration.
• for NilAway configuration