golangci-lint

Install

CI installation

Most installations of golangci-lint are performed for CI.

GitHub Actions

We recommend using our GitHub Action for running golangci-lint in CI for GitHub projects. It's fast and uses smart caching inside and it can be much faster than the simple binary installation.

Also, the action creates GitHub annotations for found issues: you don't need to dig into build log to see found by golangci-lint issues:

GitHub annotations of the action

Other CI

It's important to have reproducible CI: don't start to fail all builds at the same time. With golangci-lint this can happen if you use deprecated option --enable-all and a new linter is added or even without --enable-all: when one upstream linter is upgraded.

It's highly recommended to install a specific version of golangci-lint available on the releases page.

Here is the recommended way to install golangci-lint v1.31.0:

# binary will be $(go env GOPATH)/bin/golangci-lint
curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.31.0
# or install it into ./bin/
curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s v1.31.0
# In alpine linux (as it does not come with curl by default)
wget -O- -nv https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s v1.31.0
golangci-lint --version

It is advised that you periodically update the version of golangci-lint as the project is under active development and is constantly being improved. For any problems with golangci-lint, check out recent GitHub issues and update if needed.

Local Installation

macOS

You can install a binary release on macOS using brew:

brew install golangci/tap/golangci-lint
brew upgrade golangci/tap/golangci-lint

It can also be installed through macports The macports installation mode is community driven, and not officially maintained by golangci team.

sudo port install golangci-lint

Docker

docker run --rm -v $(pwd):/app -w /app golangci/golangci-lint:v1.31.0 golangci-lint run -v

Linux and Windows

# binary will be $(go env GOPATH)/bin/golangci-lint
curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.31.0
golangci-lint --version

On Windows, you can run the above commands with Git Bash, which comes with Git for Windows.

Install from Source

Note: such go get installation aren't guaranteed to work. We recommend using binary installation.

Why?

go get installation isn't recommended because of the following points:

  1. some users use -u flag for go get, which upgrades our dependencies. Resulting configuration wasn't tested and isn't guaranteed to work.
  2. go.mod replacement directive doesn't apply. It means a user will be using patched version of golangci-lint if we use such replacements.
  3. it's stability depends on a user's Go version (e.g. on this compiler Go <= 1.12 bug).
  4. we've encountered a lot of issues with Go modules hashes.
  5. it allows installation from master branch which can't be considered stable.
  6. it's slower than binary installation
go get github.com/golangci/golangci-lint/cmd/golangci-lint@v1.31.0

Versioning Policy

golangci-lint follows semantic versioning. However, due to the nature of golangci-lint as a code quality tool, it's not always clear when a minor or major version bump occurs. To help clarify this for everyone, we've defined the following semantic versioning policy:

  • Patch release (intended to not break your lint build)
    • A patch version update in a specific linter that results in golangci-lint reporting fewer errors.
    • A bug fix to the CLI or core (packages loading, runner, postprocessors, etc).
    • Improvements to documentation.
    • Non-user-facing changes such as refactoring code, adding, deleting, or modifying tests, and increasing test coverage.
    • Re-releasing after a failed release (i.e., publishing a release that doesn't work for anyone).
  • Minor release (might break your lint build because of newly found issues)
    • A major or minor version update of a specific linter that results in golangci-lint reporting more errors.
    • A new linter is added.
    • An existing configuration option or linter is deprecated.
    • A new CLI command is created.
    • Backward incompatible change of configuration with extremely low impact, e.g. adding validation of a list of enabled go-critic checkers.
  • Major release (likely to break your lint build)
    • Backward incompatible change of configuration with huge impact, e.g. removing excluding issues about missed comments from golint by default.
    • A linter is removed.

According to our policy, any minor update may report more errors than the previous release (ex: from a bug fix). As such, we recommend using the fixed minor version and fixed or the latest patch version to guarantee the results of your builds.

For example, in our GitHub Action we require users to explicitly set the minor version of golangci-lint and we always use the latest patch version.

Next

Quick Start: how to use golangci-lint.

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