For wheel the setuptools documentation notes:
> Historically this documentation has unnecessarily listed wheel in
> the requires list, and many projects still do that. This is not
> recommended, as the backend no longer requires the wheel package,
> and listing it explicitly causes it to be unnecessarily required for
> source distribution builds.
https://setuptools.pypa.io/en/latest/userguide/quickstart.html#basic-use
For setuptools-rust I could not find any Rust extension that need to be
built. The introduction goes back to c132ccd14, where css-inline, a rust
component, was added as a dependency.
Checking whether a path does not exist before trying to create it does
not follow the Python paradigm of asking for forgiveness, rather than
permission, and opens up a time-of-check to time-of-use race.
On systems that follow the FHS it may be desirable to separate logs and
cache files into dedicated base directories (e.g. /var/log/pretix or
/var/cache/pretix).
Martin Weinelt