While installing "normal" modules seems to work, installing proto doesn't work:
Refreshing proto...Enter passphrase for key '/home/moritz/.ssh/id_rsa':
Installing proto...cp: cannot stat `/home/moritz/tmp/proto/cache/proto/lib/*': No such file or directory
./cache/proto doesn't exist. Also note that it says "installed" even though an error occured (and no file was added to the install location).