The backend now targets 3.11, which is what Raspberry Pi OS ships, so there is
nothing left for uv to solve. It was only ever there to obtain a 3.13 the distro
does not have, and it brought its own problems: the download had to be matched
to the Pi's 32-bit userland by hand, and no armv7 wheel exists for a 3.13 ABI,
so Pillow was compiled from source and needed image headers installed alongside.
apt for the interpreter, python3 -m venv, pip for the rest - and piwheels then
supplies prebuilt armhf wheels for the native dependencies.
A venv cannot be migrated between interpreters (it holds absolute paths into the
one that made it), and `creates:` would keep the old one forever, so check what
built it and rebuild when it does not match the current python3. That is what
carries a device off the uv-installed 3.13 without hand-holding.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Martin Bauer
9bd23467f0