More informative error message when trying to retrieve a single head, but there are multiple.
Oliver Beattie
Branch: obeattie/alembic:master
Branch: zzzeek/alembic:master
Merged
Merged pull request
Merged in obeattie/alembic (pull request #7)
Merged in obeattie/alembic (pull request #7)
When running
alembic upgrade head
, if there are divergences in the script directory due to branching, the current error message is uninformative and offers little guidance as to what to do next. To a newbie (me), this was confusing.