Massimiliano Culpo 3caa3132aa python: allow it as a build-tool again (#49201) ... Python was removed from being a build tool in #46980, due to issues when reusing specs. This PR adds a new rule to match the interpreter among different Python packages, in clingo. It also adds a bunch of new "build-tools", so that specs like: ``` py-matplotlib backend=tkagg ``` can be concretized in one go. Modifications: - [x] Make `py-matplotlib backend=tkagg` concretizable - [x] Add unit-tests to ensure situations like in #46980 do not happen --------- Signed-off-by: Massimiliano Culpo <massimiliano.culpo@gmail.com>		2025-02-26 15:04:31 -08:00
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spack/defaults	python: allow it as a build-tool again (#49201)	2025-02-26 15:04:31 -08:00