pkgxdev
versionable dependencies
we've discussed this numerous times, and it makes the dependency solver deeply non-trivial; that said, it does come up in multiple packages:
- deno.land requires variable rust versions to build depending on the deno version: https://github.com/pkgxdev/pantry/blob/6f7d86673e8c061f119294ca9307c275e9aef860/projects/deno.land/package.yml#L28-L40 [^1]
- gnupg <2.5 depends on libassuan^2, while 2.5.0 depends on libassuan^3: https://github.com/pkgxdev/pantry/issues/6640 [^2]
- facebook libraries generally all require being kept in version lockstep[^3]
designing a syntax is the easy part; allowing the solver to work with it is much harder. this is a placeholder until we get there.
[^1]: e.g.: dependencies: rust-lang.org: { '>=1.38<1.40': ^1.56, '<1.38': ~1.38, '>=1.40': ^1.80 }
[^2]: dependencies: gnupg.org/libassuan: { '>=2<2.50': ^2, '^2.5': ^3 }
[^3]: dependencies: facebook.com/fizz: version # match version exactly
I kinda feel like the facebook libraries should all be a single package since they don’t work independently.
it's very possible, except that they don't need to be used together. and some, like watchman, release every week even if their own CI doesn't build a release cleanly (as it hasn't since spring). it's not a great system and their complete unwillingness to maintain the API between weeks is what causes issues.