Raw crash depending on tag existence

[AntoineD]

Describe the problem

I get a raw traceback when the template git branch HEAD has no tag but has a parent commit with a tag.

It works if there is no tag on parent commits though.

Template

> mkdir template
> cd template
> touch copier.yml
> git init .
> git add .
> git commit -m 'WIP'
> git tag foo
> touch bar
> git add .
> git commit -m 'WIP'

To Reproduce

> copier copy  <path to template> baz
copier copy -r HEAD test xxxxx
Traceback (most recent call last):
  File "/home/ad/.local/pipx/venvs/copier/lib64/python3.11/site-packages/copier/template.py", line 494, in version
    dunamai.Version.from_git().serialize(style=dunamai.Style.Pep440)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ad/.local/pipx/venvs/copier/lib64/python3.11/site-packages/dunamai/__init__.py", line 1094, in from_git
    tag, base, stage, unmatched, tagged_metadata, epoch = _match_version_pattern(
                                                          ^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ad/.local/pipx/venvs/copier/lib64/python3.11/site-packages/dunamai/__init__.py", line 244, in _match_version_pattern
    raise ValueError(_pattern_error("The pattern did not match any tags", pattern, sources))
ValueError: The pattern did not match any tags

Pattern:
(?x)                                                        (?# ignore whitespace)
    ^v((?P<epoch>\d+)!)?(?P<base>\d+(\.\d+)*)                   (?# v1.2.3 or v1!2000.1.2)
    ([-._]?((?P<stage>[a-zA-Z]+)[-._]?(?P<revision>\d+)?))?     (?# b0)
    (\+(?P<tagged_metadata>.+))?$                               (?# +linux)

Tags:
['foo']

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/ad/.local/bin/copier", line 8, in <module>
    sys.exit(copier_app_run())
             ^^^^^^^^^^^^^^^^
  File "/home/ad/.local/pipx/venvs/copier/lib64/python3.11/site-packages/plumbum/cli/application.py", line 639, in run
    inst, retcode = subapp.run(argv, exit=False)
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ad/.local/pipx/venvs/copier/lib64/python3.11/site-packages/plumbum/cli/application.py", line 634, in run
    retcode = inst.main(*tailargs)
              ^^^^^^^^^^^^^^^^^^^^
  File "/home/ad/.local/pipx/venvs/copier/lib64/python3.11/site-packages/decorator.py", line 232, in fun
    return caller(func, *(extras + args), **kw)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ad/.local/pipx/venvs/copier/lib64/python3.11/site-packages/copier/cli.py", line 66, in handle_exceptions
    return method(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ad/.local/pipx/venvs/copier/lib64/python3.11/site-packages/copier/cli.py", line 243, in main
    ).run_copy()
      ^^^^^^^^^^
  File "/home/ad/.local/pipx/venvs/copier/lib64/python3.11/site-packages/copier/main.py", line 737, in run_copy
    f"\nCopying from template version {self.template.version}",
                                       ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib64/python3.11/functools.py", line 1001, in __get__
    val = self.func(instance)
          ^^^^^^^^^^^^^^^^^^^
  File "/home/ad/.local/pipx/venvs/copier/lib64/python3.11/site-packages/copier/template.py", line 501, in version
    return Version(f"{base}.post{count}+{git_hash}")
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/ad/.local/pipx/venvs/copier/lib64/python3.11/site-packages/packaging/version.py", line 198, in __init__
    raise InvalidVersion(f"Invalid version: '{version}'")
packaging.version.InvalidVersion: Invalid version: 'foo.post1+g4e29b5d'

Logs

No response

Expected behavior

No crash or a user friendly error message.

Screenshots/screencasts/logs

No response

Operating system

Linux

Operating system distribution and version

Fedora 37

Copier version

8.0.0

Python version

3.11

Installation method

pipx+pypi

Additional context

No response

[pawamoy]

It looks like the issue here is that your tag isn't valid semver, though I'm not sure if Copier is supposed to fail on such tags or just ignore them.