CONTRIBUTING - feedbacks / problems

[martinp7]

While doing the MR #31 I followed the CONTRIBUTING step-by-step and I have some feedbacks / remarks / problems:

1. Once the conda environment is installed, the pre-commit was not available (even if the it is available in environment_dev.yaml). I tried to run pip install pre-commit but it did not solve the issue. However, using conda install -c conda-forge pre-commit solved the issue. Maybe we can update the environment_dev.yaml by moving the pre-commit requirement from pip to dependencies (+ add conda-forge channel which is commented for now)
2. Once the pre-commit is installed, it is advised to launch pre-commit run --all-files. With the latest version of main I had several errors, cf:
   
3. Regarding the pre-commit, isort is mentioned in the CONTRIBUTING.md but it is not defined in the .pre-commit-config.yaml (Remark: mypy is used but not mentioned in the CONTRIBUTING.md)
4. To ensure the git conventions you can add a hook in the pre-commit by adding the following lines in the .pre-commit-config.yaml`:

  - repo: https://github.com/alessandrojcm/commitlint-pre-commit-hook
    rev: v2.2.0
    hooks:
      - id: commitlint
        stages: [commit-msg]
        additional_dependencies: ["@commitlint/config-conventional"]

Some information regarding my laptop:

• Pop OS: 19.10
• conda: 4.8.2