`haskell/actions/hlint-run` doesn't detect `.hlint.yaml` file in working directory

[benrbray]

(cloned from haskell/actions#277 by request of @andreasabel )

Question

Does the hlint-run action currently support .hlint.yaml files? If so, what is the recommended way to pass the .hlint.yaml file to the action?

Details

I have the following project structure:

/
├─ .github/
│  ├─ workflows/
│  │  ├─ hlint.yaml
├─ project/
│  ├─ src/
│  ├─ project.cabal
│  ├─ .hlint.yml

Here is .hlint.yaml:

- ignore: {name: Redundant bracket}

Here is (the relevant part of) .github/workflows/hlint.yaml:

name: build
on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

permissions:
  contents: read

jobs:  
  hlint:
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: project
    steps:
    - uses: actions/checkout@v3

    - name: 'Set up HLint'
      uses: haskell/actions/hlint-setup@v2

    - name: 'Run HLint'
      uses: haskell/actions/hlint-run@v2
      with:
        path: .
        fail-on: never

In CI, the hlint-run action is successful, but I still get a "redundant bracket" warning. Locally, running hlint automatically detects the .hlint.yaml file and suppresses the warning.

[mihaimaruseac]

I'll take a look into this

[phadej]

Having a configuration option to specify .hlint.yml location would be great

[mihaimaruseac]

I completely forgot about this one. I'll try to handle this by July 4th long weekend :)

As a side note, I'm considering deprecating hlint-{setup,run} pair in favor of https://github.com/haskell-actions/hlint-scan but I need to make sure all current users can migrate without being impacted too severely. Can you please take a look and see if you can use hlint-scan instead? Thank you!

[balacij]

At least temporarily, you can get around this by setting hlint-bin to hlint --hint=<path/to/file> (#20 (comment)).