Implements a hook, that checks whether all dependencies, as specified by
the wheel manifest, are present in the current environment.
Complains about missing packages, as well as version specifier
mismatches.
This adds aws-gate, an AWS SSM Session manager client and while I'm not
using the program myself, I reviewed the work and did some rudimentary
testing (eg. whether the session-manager-plugin works).
Additionally, it also adds the unix_ar Python package which was used for
the GNU/Linux bootstrap of the aws-gate package but has been patched out
during the review. We decided to keep the unix-ar package nonetheless
since the package seems to be rather low-maintenance and the package
author is willing to keep maintaining the package.
I'm merging this right now because the package is low-impact, meet the
packaging requirements and all builds pass (including the ones for
unix_ar).
reuse actually can also be used as a python library:
https://github.com/fsfe/reuse-tool/blob/main/src/reuse/__init__.py#L11-L12
This change allows composing a python with `reuse` in `PYTHONPATH`:
```
$(nix-build -E "with import ./. {}; (python3.withPackages (ps: [ps.reuse]))")/bin/python
Python 3.11.5 (main, Aug 24 2023, 12:23:19) [GCC 12.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import reuse
>>> reuse.__doc__
'reuse is a tool for compliance with the REUSE recommendations.\n\nAlthough the API is documented, it is **NOT** guaranteed stable between minor or\neven patch releases. The semantic versioning of this program pertains\nexclusively to the reuse CLI command. If you want to use reuse as a Python\nlibrary, you should pin reuse to an exact version.\n\nHaving given the above disclaimer, the API has been relatively stable\nnevertheless, and we (the maintainers) do make some efforts to not needlessly\nchange the public API.\n'
```
vs before:
```
❯ $(nix-build -E "with import ./. {}; (python3.withPackages (_: [ reuse]))")/bin/python
Python 3.11.5 (main, Aug 24 2023, 12:23:19) [GCC 12.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import reuse
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'reuse'
```
