Admin/Mercurial

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Mercurial setup

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Mercurial services (hg.python.org) are currently hosted on dinsdale.python.org. Everything is under user hg{.backtick}’s home directory in /data/hg{.backtick}.

Mercurial itself uses a recent stable build, with a couple of custom patches. The Mercurial tree is in ~hg/mercurial{.backtick}. The patches are in named branch local{.backtick}, which is branched off branch stable{.backtick}. This source tree is installed in ~hg/lib/python{.backtick}, using make install-home{.backtick}.

Scripts are in ~hg/bin{.backtick}, which is versioned using Mercurial:

  • genauth{.backtick} regenerates the .ssh/authorized_keys{.backtick} file using the current committers’ public keys

  • hg-ssh{.backtick} is used as a shell for remote logins of user hg{.backtick}, in order to restrict them to a few safe commands

  • gcrepos{.backtick} detects “stale” repositories in a directory (“stale” meaning having received no new changesets since their creation), so as to enable garbage-collecting of unused server-side clones; this still needs wrapping in a cronjob

  • hg{.backtick} itself is the Mercurial executable installed by make install-home{.backtick}

Public repos are in ~hg/repos{.backtick}. They are served using two mechanisms:

  • for the ssh://...{.backtick} URLs (which allowing pushing), by the hg-ssh{.backtick} script mentioned above

  • for the http://hg.python.org/...{.backtick} URLs, using WSGI script ~hg/wsgi/python.wsgi{.backtick} run by a mod_wsgi instance in daemon mode under user hg{.backtick}. This script itself uses configuration file ~hg/repos.conf{.backtick}.

Noteworthy amongsth these repos are:

  • hooks{.backtick} contains a variety of hooks used for other repos (such as whitespace checking)

  • pymigr{.backtick} contains scripts and data for the SVN to Mercurial conversion

  • test{.backtick} is a test repo for committers

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