Context formatting doesn't work in custom build hook dependencies

[oddfacade]

Here is the configuration in my pyproject.toml:

[tool.hatch.build.hooks.custom]
dependencies = [
    "mydependencypackage @ {root:parent:uri}",
]

I get this error when I run hatch build:

ERROR: Invalid requirement: 'mydependencypackage @ {root:parent:uri}'

It seems like the context formatting just isn't being applied.

For what it's worth, it also doesn't work in the build-system.requires but does work in project.dependencies and env dependencies.

[oddfacade]

I'm willing to submit a fix for this if it's just an oversight. Mostly making this report to confirm that the behavior isn't intentional.

[ofek]

I didn't think this would be useful, sure, I would gladly accept a PR!

[oddfacade]

The motivation in my case is I have a documentation package containing pre-rendered html docs. It is separate from my main package, but has the main package as a build dependency. Both packages are in the same repo and meant to be kept in perfect sync.

[dvirtz]

It would also be useful to support context formatting in build system requirements

[build-system]
requires = [
  "hatch-custom-publisher @ {root:parent:uri}/hatch-custom-publisher",
]