infra/codestorage/hg-repo-sync
infra/codestorage/hg-repo-sync/pull.sh
Use pip to install Mercurial, pin to 3.5.2 We want to use a relatively recent (but consistent) version of Mercurial, so I had to switch to using pip to install Mercurial, so I could pin it to version 3.5.2. apt-get didn't have version 3 available.