brew install not available on OSX

brew install fdroidserver doesn't work (anymore?)

Also running fdroid update from source doesn't work (fails with an ImportError: No module named pyasn1.error)

However the virtualenv instructions work. So I think the recommended option for OSX should be the same as the one at the bottom of the README:

git clone https://gitlab.com/fdroid/fdroidserver.git
cd fdroidserver
virtualenv env/
source env/bin/activate
pip install -e .
python2 setup.py install