[feature] Support inverse match with .conanignore

[skycaptain]

What is your suggestion?

As recommended, we store our Conan config in a distinct Git repository. Since we use many automation tools, we end up with numerous config files and other dotfiles in the repository unrelated to Conan. This repo also serves as a template for other project maintainers, who might add more non-Conan related files. .conanignore files are helpful for filtering files to be installed. However, they would be more useful if they supported inverse matching, just like .gitignore or .dockerignore do. This is especially true for the latter, where it's common practice to ignore all files and only explicitly add those required, e.g.:

*
!profiles/
!global.conf
!remotes.json

I believe this would make maintaining such a config repository much easier. If third-party libraries are an option, there are gitignore-compatible parsers already available for Python.

Have you read the CONTRIBUTING guide?

• I've read the CONTRIBUTING guide

[AbrilRBS]

Hi @skycaptain thanks a lot for your request. I think this feature makes sense (having conan config remotes alongside other configs is not something we considered when implementing this feature, but I'll let @memsharded chime in about the approach itself!), so I've proposed #17123

It still needs team review and the approach could be changed in the meanwhile, but this should be released with Conan 2.9 at some point early next month :)

[memsharded]

Yeah, makes sense, this can be added, thanks for the feedback!

[memsharded]

#17123 was merged, so this will be in next 2.9, thanks for the feedback.