Load Epicea project as external project?

Hi, some weeks ago I created a PR to integrate a new version of Epicea
where the changes are:

- packages are renamed EpiceaTest->Epicea-Test, etc.
- code migrated from sthub->github
- load it in BaselineOfIDE as external project as LibGit

Here: https://github.com/pharo-project/pharo/pull/1366

Do you agree? is 3rd point problematic? I didn't understand last error.

Regards,
Martin