bash from local mounted drive with subst command

[David Meyer]

We're running into this same issue on my project.  We're trying to
shorten path names to get around Visual Studio limitations in path
lengths, which are unfortunately very long for us since we're
generating filenames based on package names and the like.

If subst won't work to let us shorten path names, is there any other
solution?  We'd really like something that behaves like bind mounts
rather than symlinks.

Thanks.