v12

Upgrade from Node.js 20 to Node.js 24. This is a required upgrade since GitHub Actions is deprecating Node.js 20. Runners will default to Node.js 24 starting June 2, 2026, and Node.js 20 will be fully removed in fall 2026. Older versions of run-fourmolu (v11 and below) will stop working after this date.

Implemented in #32.

v11

Add a new working-directory argument that allows you to change the working directory that fourmolu is run from. Added in #29.

v10

This release upgrades run-formolu to work with Node 20 instead of Node 16.

Most of the JS library dependencies have been upgraded as well.

Implemented in #25

v9

run-fourmolu Action now takes a version argument to allow you to specify the version of Fourmolu you want to use. If you don't specify the version argument, then the latest version of Fourmolu will be used.

Note that this is a breaking change for all current users of run-fourmolu.

With this change, you're now able to use a single version of run-fourmolu with different versions of Fourmolu.

Here's an example of how you'd use run-fourmolu with the 0.12.0.0 version of Fourmolu:

- uses: haskell-actions/run-fourmolu@v9
  with:
    version: "0.12.0.0"

It is recommended to always specify the version of Fourmolu you want to use, since Fourmolu is often not backwards compatible. New releases of Fourmolu could possibly break your CI. However, if you want to always use the newest release of fourmolu, you can do it like the following:

- uses: haskell-actions/run-fourmolu@v9
  with:
    version: "latest"

Alternatively, you can leave out the version argument and it will default to latest.

v8

This release uses fourmolu-0.12.0.0.

v7

This release uses fourmolu-0.11.0.0.

v6

This release uses fourmolu-0.10.1.0.

v5

This release uses fourmolu-0.9.0.0.

v4

This release uses fourmolu-0.8.2.0.

v3

This release uses fourmolu-0.8.0.0.