feat(bzlmod): Allow bzlmod pip.parse to reference the default python toolchain and interpreter #1303
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This commit defaults the python_version attribute to the default version of Python. This allows a user to use the version we define in rules_python MODULE.bazel. Also, a user can now not set the python_version attribute on a pip tag_class and we automatically set the interpreter.
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…hon version (#1341) Reverts #1303 The main issue is that `pip.parse()` accepts a locked requirements file -- this means the requirements are specific to a particular Python version[1]. Because the default Python version can arbitrarily change, the lock file may not be valid for the Python version that is used at runtime. The net result is a module will use dependencies for e.g. Python 3.8, but will use 3.9 at runtime. Additionally, the dependencies resolved for 3.8 will be created under names such as `@foo_39` (because that's the python_version pip.parse sees), which is just more confusing. BREAKING CHANGE: * pip.parse() must have `python_version` explicitly set. Set it to the Python version used to resolve the requirements file. [1] Lock files aren't necessarily version specific, but we don't currently support the environment markers in lock files to make them cross-python-version compatible.
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This commit defaults
the pip.parsepython_versionattribute to the default version ofPython, as configured by the
python.toolchainextension. This allows a user to use thePython version set by rules_python or the root module. Also, this makes setting the
attribute optional (as it has a default) and we automatically select the interpreter.
Closes #1267