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golangci-lint documentation

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Configuration in MegaLinter

Variable Description Default value
GO_GOLANGCI_LINT_ARGUMENTS User custom arguments to add in linter CLI call
Ex: -s --foo "bar"
GO_GOLANGCI_LINT_FILTER_REGEX_INCLUDE Custom regex including filter
Ex: (src\|lib)
Include every file
GO_GOLANGCI_LINT_FILTER_REGEX_EXCLUDE Custom regex excluding filter
Ex: (test\|examples)
Exclude no file
GO_GOLANGCI_LINT_CLI_LINT_MODE Override default CLI lint mode
- file: Calls the linter for each file
- list_of_files: Call the linter with the list of files as argument
- project: Call the linter from the root of the project
list_of_files
GO_GOLANGCI_LINT_FILE_EXTENSIONS Allowed file extensions. "*" matches any extension, "" matches empty extension. Empty list excludes all files
Ex: [".py", ""]
[".go"]
GO_GOLANGCI_LINT_FILE_NAMES_REGEX File name regex filters. Regular expression list for filtering files by their base names using regex full match. Empty list includes all files
Ex: ["Dockerfile(-.+)?", "Jenkinsfile"]
Include every file
GO_GOLANGCI_LINT_PRE_COMMANDS List of bash commands to run before the linter None
GO_GOLANGCI_LINT_POST_COMMANDS List of bash commands to run after the linter None
GO_GOLANGCI_LINT_CONFIG_FILE golangci-lint configuration file name
Use LINTER_DEFAULT to let the linter find it
.golangci.yml
GO_GOLANGCI_LINT_RULES_PATH Path where to find linter configuration file Workspace folder, then MegaLinter default rules
GO_GOLANGCI_LINT_DISABLE_ERRORS Run linter but consider errors as warnings false
GO_GOLANGCI_LINT_DISABLE_ERRORS_IF_LESS_THAN Maximum number of errors allowed 0

IDE Integration

Use golangci-lint in your favorite IDE to catch errors before MegaLinter !

IDE Extension Name Install
Atom go-plus Visit Web Site
Emacs flycheck-golandci-lint Visit Web Site
Emacs SpaceMacs Visit Web Site
goland goland Visit Web Site
Sublime Text SublimeLinter-contrib-golang-cilint Visit Web Site
vim vim-go Visit Web Site
Visual Studio Code vscode.Go Install in VSCode

MegaLinter Flavours

This linter is available in the following flavours

Flavor Description Embedded linters Info
all Default MegaLinter Flavor 109 Docker Image Size (tag) Docker Pulls
cupcake MegaLinter for the most commonly used languages 79 Docker Image Size (tag) Docker Pulls
go Optimized for GO based projects 49 Docker Image Size (tag) Docker Pulls

Behind the scenes

How are identified applicable files

  • File extensions: .go

How the linting is performed

  • golangci-lint is called once with the list of files as arguments (list_of_files CLI lint mode)

Example calls

golangci-lint run myfile.go
golangci-lint run -c .golangci.yml myfile.go

Help content

Smart, fast linters runner.

Usage:
  golangci-lint [flags]
  golangci-lint [command]

Available Commands:
  cache       Cache control and information
  completion  Generate the autocompletion script for the specified shell
  config      Config
  help        Help
  linters     List current linters configuration
  run         Run the linters
  version     Version

Flags:
      --color string              Use color when printing; can be 'always', 'auto', or 'never' (default "auto")
  -j, --concurrency int           Concurrency (default NumCPU) (default 2)
      --cpu-profile-path string   Path to CPU profile output file
  -h, --help                      help for golangci-lint
      --mem-profile-path string   Path to memory profile output file
      --trace-path string         Path to trace output file
  -v, --verbose                   verbose output
      --version                   Print version

Use "golangci-lint [command] --help" for more information about a command.

Installation on mega-linter Docker image

  • Dockerfile commands :
RUN wget -O- -nv https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh \
    && golangci-lint --version