Recursive inotify has beaten me before, with its bad design and races,
but not this time! (I think.) This is able to follow the strongest
filesystem traffic I can throw at it, and robustly notices every file
add and delete. Mostly that's down to Haskell having a quite nice threaded
inotify library (that does its own buffering). A key insight was realizing
that the inotify directory add race could be dealt with by scanning for
files inside newly added directories.
TODO: Add support for freebsd/osx kqueue; see
http://hackage.haskell.org/package/kqueue
Can a git-annex-monitor be far off?
