cargo-semver-checks/README.md

cargo-semver-checks-action

Lint your crate API changes for semver violations.

By default, this action assumes that:

• Your cargo workspace contains a single crate which contains a library target.
• Your releases are tagged in git as v{major}.{minor}.{patch}, for example v1.2.3.

Single-crate workspaces can use it as:

- name: Check semver
  uses: obi1kenobi/cargo-semver-checks-action@v1
- name: Publish to crates.io
  run: # your `cargo publish` code here

Input options

Every argument is optional.

Input	Description	Default
crate-name	The crate whose API to check for semver
crate-target	By default, check the library target of the crate. To check a different target (e.g. a binary target), set this to --bin <NAME>	--lib
version-tag-prefix	The prefix to use for the git tag for a version; the default "v" creates tags like "v1.0.0"	v

Scenarios

• Use with a different version tag format
• Use in workspaces with more than one crate
• Use with binary crates or crates with more than one target

Use with a different version tag format

Change the version-tag-prefix setting to reflect the prefix used to create the version tag. The setting's default value 'v' creates version tags like v1.2.3.

For example, if your versions are tagged as 1.2.3, you can set version-tag-prefix to be the empty string:

- name: Check semver
  uses: obi1kenobi/cargo-semver-checks-action@v1
  with:
    version-tag-prefix: ''
- name: Publish my-crate to crates.io
  run: # your `cargo publish` code here

Use in workspaces with more than one crate

You'll need to specify which crate should be checked, and the format used for version tags for that crate:

• crate-name specifies the crate to check, and
• version-tag-prefix sets the text prepended to the version number to create the git tag for that release.

For example, this will check my-crate whose releases are tagged as my-crate-v1.2.3:

- name: Check semver
  uses: obi1kenobi/cargo-semver-checks-action@v1
  with:
    crate-name: my-crate
    version-tag-prefix: my-crate-v
- name: Publish my-crate to crates.io
  run: # your `cargo publish` code here

Use with binary crates or crates with more than one target

To check a different (non-library) target in a crate, use the crate-target setting:

- name: Check semver for my_binary
  uses: obi1kenobi/cargo-semver-checks-action@v1
  with:
    crate-target: --bin my_binary
- name: Publish my-crate to crates.io
  run: # your `cargo publish` code here