Could we store the commit hash in sol?

[EveCharbie]

Found this:

repo = git.Repo(search_parent_directories=True)
sha = repo.head.object.hexsha```
Here : https://stackoverflow.com/questions/14989858/get-the-current-git-hash-in-a-python-script 

[pariterre]

Is this related to #804 ?
That would mean no need anymore

[EveCharbie]

#804 made me think of this.
I think it would be a good addition for when we generate solutions with the latest feature and forget which commit we were on.

[pariterre]

But where would it it be saved since we do not have a save feature anymore?

[EveCharbie]

Unfortunately, lots of things in sol.ocp.nlp makes it unpicklable.