Add inherit_from as for rubocop.yml

[Jerska]

Hi,

First, thanks a lot for this linter. It works flawlessly !
I have a feature request :
It would be really great to be able to configure haml-lint the same way rubocop does with inherit_from.
This would allow to have global overrides in ~/.haml-lint.yml and your local project overrides in ./haml-lint.yml.

Hope you will consider this !

Cheers !

[sds]

Hey @jerskouille,

Glad to hear haml-lint has been serving you well. I've actually thought about implementing your request a long time ago, but when I tried to add support for the idea to Rubocop in rubocop/rubocop#583, it was pointed out to me that this isn't really a good idea. Allow me to explain.

I believe your intention with adding support to inherit_from ~/.haml-lint.yml is so you can DRY up your configurations so you aren't repeating the same configuration for all your repositories. However, if you think about it, the repository is the singular unit of composition—any configuration should never reference a file outside the repository, as that makes it inherently brittle. What happens if someone clones your repository and doesn't have the file in question?

For this reason, haml-lint was designed to only have a single file for configuration, located in the root of the repository. This way regardless of who clones your repository they will always have the intended configuration, with no additional work required on their part.

Hope that explains things. Keep sending us ways we can improve the tool!