Bug 2180791

This is a reference from fedora packaging committee issue[1]:

> I would like to propose a few helper macros for dealing with version control:
> - Format git tag -> rpm version: e.g. `1.2.3-rc1`/`1.2.3rc` -> `1.2.3~rc1`. This could be detected from python's `packaging.version`[2]
> - Format rpm version -> git tag/free format: e.g. `1.2.3~rc1` -> `1.2.3-rc1`. An interface for this could be: `%{version_format -base 1.2.3 -prerel rc1 -format v{base}-{prerel}}` or if possible more automated `%{version_format -version %{version} -format v{base}-{prerel}}`
> - Detect version from git tag/`.git_archival.txt` similar to `setuptools_scm`. This would be incredibly useful for in-source packaging, but not in dist-gits
>
> These issues arose when trying to make packit be able to parse the version from git tags like v1.2.3-rc1. We can make a custom handling there, but it would be better to have a more standardized way to do this. The best case is to implement these upstream so that these can be used by OpenSuse as well.
> For reference here are a few workarounds that have to be maintained and are inconsistent with each other: bluefish[3], cmake[4]

There is also a proposal for migrating the macro used in rust packaging `%{version_no_tilde}`[5], but this is a more complete, and if it can be introduced here, it could be used from the start of the spec file.

I have also opened up an issue[6] on rpm upstream.

[1] https://pagure.io/packaging-committee/issue/1264
[2] https://packaging.pypa.io/en/stable/version.html
[3] https://src.fedoraproject.org/rpms/bluefish/blob/rawhide/f/bluefish.spec#_2
[4] https://src.fedoraproject.org/rpms/cmake/blob/rawhide/f/cmake.spec#_68
[5] https://pagure.io/fedora-rust/rust2rpm/issue/192
[6] https://github.com/rpm-software-management/rpm/issues/2443