Ignoring invalid distribution -agemath-standard

[Frédéric Chapoton]

When compiling, I see many of these strange warnings. Note the "agemath"

Any idea about what is happening ?

Here is one in extenso :

[sagelib-9.7.rc1]   WARNING: Ignoring invalid distribution -agemath-standard (/home/.../sage/local/var/lib/sage/venv-python3.10/lib/python3.10/site-packages)
[sagelib-9.7.rc1] Installing collected packages: sagemath-standard
[sagelib-9.7.rc1]   Attempting uninstall: sagemath-standard
[sagelib-9.7.rc1]     WARNING: Ignoring invalid distribution -agemath-standard (/home/.../sage/local/var/lib/sage/venv-python3.10/lib/python3.10/site-packages)

[Matthias Koeppe]

It's a concurrency bug, but our build scripts are robust enough to make sure that this only leads to a warning and does not break the build.

It will go away with https://trac.sagemath.org/ticket/34209 and https://trac.sagemath.org/ticket/32874