Setting up a wemake-python-styleguide GitHub action that respects a legacy code flakehell baseline

Problem

I want to to set up a GitHub Action that runs the wemake-python-styleguide on every push to the repo, but respects a legacy code flakehell baseline.

According to the wemake-python-styleguide Website, "flakehell is officially supported by wemake-python-styleguide and developed by the same people".

My problem is: All the GitHub Action workflow file (.yml) specifications I've tried so far, did not work.

Setup

First, I set a flakehellbaseline locally via flakehell > .flakehellbaseline and put the

[tool.flakehell]
baseline = ".flakehell_baseline"

in my pyproject.toml. Pushed everything to the repo.

Github action workflow specification

1.) Attempt

Then I created a new GitHub Action workflow file (wemakepython.yml) according to their premade Github Action.

name: wemakepython

on: push

jobs:
  wemake:
      runs-on: ubuntu-18.04
      steps:
        - name: wemake-python-styleguide
          uses: wemake-services/wemake-python-styleguide@0.14.0

Result:

The action gets triggered, and runs through smoothly. But, it does not report any flake8 or flakehell lint violations, despite there being plenty of them. How do I know that? If I run either flakehell lint or flake8 . locally, there are plenty of violations.

2.) Attempt

If the wemake-python-styleguide premade GitHub Action does not work, I'll just specify a flakehell.yml GitHub Action by myself.

name: flakehell

on: push

jobs:
  build:
    runs-on: ubuntu-18.04
    steps:
      - name: flakehell-linter
        run: |
          pip install flakehell
          flakehell lint

Result:

Unfortunately this one doesn't work either. The action does not even run, it exits with error code 1.

@github-actions
github-actions
/ build

.github#L1
Process completed with exit code 1.

Any ideas how to solve this? May it be a problem with the setup.cfg and pyproject.toml definitions?