This GitHub Action automatically detects the latest GHC (Glasgow Haskell Compiler) version compatible with your Haskell project's base dependency constraint in package.yaml.
Useful for CI/CD workflows where you want to install a GHC version that satisfies your project's dependency bounds.
| Input | Description | Default | Required |
|---|---|---|---|
package-yaml-path |
Path to your package.yaml file relative to the repo root |
package.yaml |
No |
| Output | Description |
|---|---|
ghc-version |
The latest compatible GHC version to install |
name: CI
on: [push, pull_request]
jobs:
setup:
runs-on: ubuntu-latest
steps:
- name: Checkout code
uses: actions/checkout@v4
- name: Get latest supported GHC version
id: get-ghc
uses: webdevred/[email protected]
with:
package-yaml-path: examples/package.yaml
- name: Set up GHC latest and Cabal
id: setup-ghc
uses: haskell-actions/[email protected]
with:
ghc-version: "${{ steps.get-ghc.outputs.ghc-version }}"