766c31c95c
Not yet wired up to restart the assistant on upgrade; that needs careful sanity checking to wait until the upgrade is done before restarting. Used the DirWatcher here, so it gets events for any changes to the directory containing the program file. (But not subdirs.) This is necessary in order to detect when the file is renamed as part of the upgrade, which an inotify on a single file would not detect. (Also, I have DirWatcher code, but not FileWatcher code.) Note that upgrades that remove or rename a whole directory tree containing the executable will *not* trigger this code. So eg, deleting and replacing the whole standalone tarball dir tree won't work -- but untarring it over top will. So should dpkg package upgrades. Added programPath, using a new GHC feature to find the full path to the executable. The fallback code for old GHC or unsupported OS is less good; its worst failure mode would be either failing to find the program, and so not checking for upgrades, or finding a git-annex that's in PATH, but is not the one running. This commit was sponsored by John Roepke. |
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