feat(conan): add revisions support

[segretil]

Changes

This adds basic support for conan revisions using digests. When a package has a revision and is updated, the revision will also get updated.
This:

- cairo/1.17.2@_/_#aff2d03608351db075ec1348a3afc9ff
+ cairo/1.17.4@_/_#aff2d03608351db075ec1348a3afc9ff

will become this:

- cairo/1.17.2@_/_#aff2d03608351db075ec1348a3afc9ff
+ cairo/1.17.4@_/_#51627b399b12479e23cc7958a33fb5eb

However I did not find how to update the revision when there is no new version. For example, I would like changes that can look like this:

- opus/1.3.1@_/_#6d2446ed5a38e86a3bb304db3ffb3e01
+ opus/1.3.1@_/_#5132ab8db7b69dd8e26466e0b3b017dd

I know it is possible since you update digests in dockerfiles but I did not understand how it worked.

Context

It partially closes #16467

Documentation (please check one with an [x])

• I have updated the documentation, or
• No documentation update is required

How I've tested my work (please tick one)

I have verified these changes via:

• Code inspection only, or
• Newly added/modified unit tests, or
• No unit tests but ran on a real repository, or
• Both unit tests + ran on a real repository

[rarkins]

Do you have a working public repository to demonstrate this new logic?

[segretil]

@rarkins here is the repository: https://github.com/segretil/renovate-conan-revisions-without-bot

[viceice]

you still don't understand how renovate handles digests. so please do the following:

• remove the requested digest handling in getReleases
• implement the getDigest function, so it uses the newValue to fetch the digest matching the release ( follow docker datasource as example)

this allows renovate to

• add a digest to a version without a digest
• update the digest to the corresponding version

[segretil]

@viceice I pushed what you suggested, and run it on this repository: https://github.com/segretil/-renovate-conan-revisions-get-digest

As you can see segretil/-renovate-conan-revisions-get-digest#1 is wrong, this revision does not exist with this version.
Without this last commit (9f53a90) I obtain this: https://github.com/segretil/renovate-conan-revisions-without-bot/pulls which is exactly what I want.

Do you know why ?

[segretil]

I implemented what you said but I am still getting this unwanted merge request: segretil/-renovate-conan-revisions-get-digest#6

[viceice]

we need to remove the current version from packageName, otherwise it will be used wrongly for cache keys

[segretil]

It is now working, it seems like the issue happened because of the cache. Thank you for the suggestion !

[segretil]

Is there something you are still expecting from me @rarkins @viceice ? :)

[viceice]

maybe we need to update the digest update commitmessage extra, so the pr and commit messages use revisions instead of digest.

like we do for docker datasource.

[viceice]

❤️ thanks for the good work and following all those advices

[renovate-release]

🎉 This PR is included in version 32.155.0 🎉

The release is available on:

• GitHub release
• 32.155.0

Your semantic-release bot 📦🚀