renovate/docs/usage/golang.md

title	description
Go Modules	Go modules support in Renovate

Automated Dependency Updates for Go Modules

Renovate supports upgrading dependencies in go.mod files and their accompanying go.sum checksums.

How It Works

1. Renovate searches in each repository for any go.mod files
2. Renovate extracts existing dependencies from require statements
3. Renovate resolves the dependency's source repository and checks for SemVer tags if found. Otherwise commits and v0.0.0-.... syntax will be used
4. If Renovate finds an update, Renovate will update go.mod to the new value
5. Renovate runs go get to update the go.sum files
6. If the user has enabled the option gomodUpdateImportPaths in the postUpdateOptions array, then Renovate uses mod to update import paths on major updates, which can update any Go source file
7. If the user has enabled the option gomodTidy in the postUpdateOptions array, then Renovate runs go mod tidy, which itself can update go.mod and go.sum.
   1. This is implicitly enabled for major updates
8. go mod vendor is run if vendored modules are detected
9. A PR will be created with go.mod,go.sum, and any updated vendored files updated in the one commit
10. If the source repository has either a "changelog" file or uses GitHub releases, then Release Notes for each version will be embedded in the generated PR

Enabling Go Modules Updating

Renovate updates Go Modules by default. To install Renovate Bot itself, either enable the Renovate App on GitHub, or check out Renovate OSS for self-hosted.

Technical Details

Module Tidying

Go Modules tidying is not enabled by default, and is opt-in via the postUpdateOptions config option. The reason for this is that a go mod tidy command may make changes to go.mod and go.sum that are completely unrelated to the updated module(s) in the PR, and so may be confusing to some users.

Module Vendoring

Vendoring of Go Modules is done automatically if vendor/modules.txt is present. Renovate will commit all files changed within the vendor/ folder.

Go binary version

By default, Renovate will keep up with the very latest version of go.

You can "pin" the go version that Renovate uses. Say you want Renovate to use Go version 1.14, you can do this by adding go 1.14 to your go.mod file. We do not support pinning Go versions to a specific patch level, so you cannot use go 1.14.12, but you can use go 1.14 in your go.mod file.