Use the last open-source version of Terraform.

It's no longer a part of the listen directive but a standalone one.

As described at
https://github.com/89luca89/distrobox/blob/main/docs/posts/distrobox_custom.md.

Not sure about this one so let's try it out.

Use the defaults from the toolbx image.

Stay with open source licenses to avoid unpleasantries.

Should help with downloads (parallel downloads) and with builds (better
caching).

It's already provided by a host-spawn link to the host's podman.

Since the image is meant to be used with toolbx (which uses podman),
linking to host-spawn uses the host's podman which provides a better
experience.

I've had enough for today.

Just let it end.

I think that it was pdm-publish (that hasn't been updated for over 2
years) that's causing the issue. It requires an older version of PDM and
because of that it's breaking the installation of pdm-version and leaves
PDM broken (pipx downgrades PDM but the dependencies aren't installed
properly). Just a theory, let's check.

Not available in testing but it is available in unstable.

Still conflicts with other package dependencies.

Pin the priority to 99 (lower than existing packages) as to prevent
unwanted breakge but it's still possible to install packages from it
with `apt install foo/unstable`.