The 'stdlib compileall' function writes stage directory into *.pyc files

Description

I need to install a python package into a stage directory.

The command I run from the source directory is:

pip install {my-pkg-name} --isolated --root=/tmp/stage/dir --prefix=/usr/local --ignore-installed --no-deps

This command installs the package into the right location, but *.cpython-39.pyc files have full paths to *.py files in the stage directory.

If paths of *.py are needed they should be adjusted so that they should begin with prefix (/usr/local). This is because the source directory will be deleted before the package is run.

Pip uses cpython's stdlib compileall function that inserts stage directory paths.

See the original but report for pip: https://github.com/pypa/pip/issues/11317

pip-22.1.2
Python-3.9
FreeBSD 13.1

How to Reproduce

git clone https://github.com/openqasm/openqasm-pygments.git
cd openqasm-pygments
pip install openqasm-pygments --isolated --root=/tmp/openqasm-pygments --prefix=/usr/local --ignore-installed --no-deps

Beginne damit, die pip-Installation mit dem openqasm-pygments-Paket, --root=/tmp/openqasm-pygments und --prefix=/usr/local zu reproduzieren, und untersuche anschließend das Verhalten von Pythons stdlib compileall. Überprüfe, wo die generierten .cpython-39.pyc-Dateien die Quellpfade speichern; als erledigt gilt die Aufgabe, wenn die Pfade des installierten Bytecodes das Staging-Verzeichnis nicht mehr enthalten, sondern stattdessen mit dem Installationspräfix beginnen.