chore(pypi): enable pipstar by default #3121
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This will be needed when we start selecting wheels entirely in the bzlmod extension evaluation phase (bazel-contrib#3058). This adds a few unit tests to just ensure that we conform to the spec even though the code is very simple. Work towards bazel-contrib#2747 Work towards bazel-contrib#2759 Work towards bazel-contrib#2849
DO NOT MERGE: stacked on bazel-contrib#3110 This PR only implements the selection algorithm where instead of selecting all wheels that are compatible with the set of target platforms, we select a single wheel that is most specialized for a particular *single* target platform. What is more, compared to the existing algorithm it does not assume a particular list of supported platforms and just fully implements the spec. Work towards bazel-contrib#2747 Work towards bazel-contrib#2759 Work towards bazel-contrib#2849
Before this PR we would be constructing slightly different environments when the `env_marker_setting` is doing it in the analysis phase and when we are doing it in the repo phase due to how the defaults are handled. In this change we simply reuse the same select statements and add an extra helper that is allowing us to process that. Work towards bazel-contrib#2949 Prep for bazel-contrib#3058
Before this PR the configuration for platforms would be built non-incrementally, making it harder for users to override particular attributes of the already configured ones. With this PR the new features introduced in bazel-contrib#3058 will be easier to override. Work towards bazel-contrib#2747
Before this we would pull all of the wheels that the user target configuration would be compatible with and that meant that it was not customizable. This also meant that there were a lot of footguns in the configuration where the select statements were not really foolproof. With this PR we select only those sources that need to be for the declared configurations. Freethreaded support is done by defining extra freethreaded platforms using the new builder API (bazel-contrib#3063). This is also changing the default platforms to be only the fully supported platforms. This makes the testing easier and avoids us running into compatibility issues during the roll out. Work towards bazel-contrib#2747 Fixes bazel-contrib#2759 Fixes bazel-contrib#2849
DO NOT MERGE: stacked on bazel-contrib#3058 This is a continuation of bazel-contrib#3058 where we define freethreaded platforms. They need to be used only for particular python versions so I included an extra marker configuration attribute where we are using pipstar marker evaluation before using the platform. I think this in general will be a useful tool to configure only particular platforms for particular python versions Work towards bazel-contrib#2548, since this shows how we can define custom platforms Work towards bazel-contrib#2747
Summary: - remove config settings generation - remove unnecessary params - remove BUILD.bazel generating unnecessary params
The most recent improvements to the platform definitions allow us to enable pipstar by default, which means that we can get rid of the interpreter usage in the extension evaluation phase. Fixes bazel-contrib#2949
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TODO: probably need to add docs how to customize everything.
TODO: ensure that #2821 works
This PR is just to see what else is breaking.