GitLab workaround, for shallow clone

[pfbuxton]

Hello,

By default GitLab does a shallow checkout within runners, see GitLab documentation on runners

Once this number of commits is reached it is not possible to figure out which tag the commit belongs to.

git describe
fatal: No tags can describe 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'

This can be fixed by adding the following to .gitlab-ci.yml:

variables:
  GIT_DEPTH: 0

Might be worth adding to documentation?

btw- setuptools-git-versioning is an amazing project ❤️

[dolfinus]

Hi.

Thank you, added to documentation.