pex 2.4.0

[github-actions[bot]]

---

2.4.0

This release brings new support for preserving arguments passed to the
Python interpreter (like -u or -W ignore) either via running a PEX
via Python from the command line like python -u my.pex or via a
shebang with embedded Python arguments like #!/usr/bin/python -u.

In addition, PEXes can now be built with --inject-python-args similar
to the existing --inject-args but sealing in arguments to pass to
Python instead. When both explicitly passed Python interpreter arguments
and injected Python interpreter arguments are specified, the injected
arguments appear first on the synthesized command line and the
explicitly passed arguments appear last so that the explicit arguments
can trump (which is how Python handles this).

Several bugs existing in the --exclude implementation since its
introduction are now fixed and the feature is greatly improved to act on
excludes eagerly, never traversing them in the resolve process; thus
avoiding downloads associated with them as well as potentially failing
metadata extraction & wheel builds for ill-behaved sdists.

Finally, a bug was fixed in pex3 lock export for lock files containing
either locked VCS requirements or locked local project directories.
Previously, these were exported with a <project name>==<version>
requirement, which lost fidelity with the input requirement. Now they
are exported with their original requirement form. Further, since the
--hash of these styles of locked requirement are unuseable outside
Pex, a new --format option of pip-no-hashes is introduced for the
adventurous.

• Implement support for preserving and injecting Python args. (Implement support for preserving and injecting Python args. #2427)
• Fix --exclude. (Fix --exclude. #2409)
• Fix pex3 lock export handling of exotic reqs. (Fix pex3 lock export handling of exotic reqs. #2423)