I'm now successfully using git-annex at the command line on Android. git annex watch works too.

For now, I'm using a git repository under /data, which is on a real, non-cripped filesystem, so symlinks work there.

There's still the issue of running without any symlinks on /mnt/sdcard. While direct mode gets most of the way, it still uses symlinks in a few places, so some more work will be needed there. Also, git-annex uses hard links to lock down files, which won't work on cripped filesystems.

Besides that, there's lots of minor porting, but no big show-stoppers currently.. Some of today's porting work:

• Cross-compiled git for Android. While the Terminal IDE app has some git stuff, it's not complete and misses a lot of plumbing commands git-annex uses. My git build needs some tweaks to be relocatable without setting GIT_EXEC_PATH, but it works.

• Switched git-annex to use the Haskell glob library, rather than PCRE. This avoids needing libpcre, which simplifies installation on several platforms (including Android).

• Made git-annex's configure hardcode some settings when cross-compiling for Android, rather than probing the build system.

• Android's built-in lsof doesn't support the -F option to use a machine-readable output format. So wrote a separate lsof output parser for the standard lsof output format. Unfortunatly, Android's lsof does not provide any information about where a file is open for read or write, so for safety, git-annex has to assume any file that's open might be written to, and avoid annexing it. It might be better to provide my own lsof eventually.