Support caches on NTFS mounts on Linux about 0install HOT 9 OPEN

Rather than using a heuristic, could we have a special file at the top-level of the whole cache to indicate this? e.g. /var/cache/0install.net/implementations/.no-xbits or something? Might be more reliable than guessing.

from 0install.

I agree a flag file seems like a better solution. But who would be responsible for creating it? Any Zero Install instance running on Windows coming across an implementation directory that does not have one yet?

from 0install.

Yes, I think that makes sense (the check would be done on first write, I imagine).

from 0install.

I'll add the corresponding code to the next Zero Install for Windows release. I'd go for .no-unix-fs if that's fine for you.

from 0install.

Sounds good to me!

from 0install.

Ok, the .no-unix-fs generation code has been in the Windows releases for a while now, so most auto-updating users should have it by now.

Could you look into the OCaml side of this feature? I still have zero experience with the language.

from 0install.

Does this only affect 0install store audit / verify?

from 0install.

It also affects 0install select / download / update / run since a user might set up 0install on Linux to write newly downloaded implementations to a cache stored on an NTFS partition.

from 0install.

This could be split up into two steps:

1. Modify 0install store audit / verify to look for presence of a .no-unix-fs file.
   If this is detected take the "executable" and "symlink" states from the .manifest file rather than looking the file system itself.
   Additional value provided: Implementations downloaded on Windows can be verified on Linux.
2. Modify 0install store select / download / run to look for presence of a .no-unix-fs file.
   If this is detected write the "executable" and "symlink" states to the .manifest file but do not attempt to apply them to the file system. This would entail getting "executable" and "symlink" states from archives before extracting them.
   Additional value provided: Implementations downloaded on Linux can be used on Windows.

from 0install.