2fc46e1871 broke running ./git-annex test
when git-annex-shell is not in PATH from another install, and also
caused the wrong git-annex-shell to be tested.
Using a symlink made programPath return the .cabal/ directory where the
git-annex binary is, but git-annex-shell is not in that directory.
Changing to a hard link avoids that problem.
Sponsored-by: Dartmouth College's Datalad project
The patch that removed it did not break anything, since the strings it's
used on are all ASCII not unicode. But I like making sure to use
packString everywhere just in case the code later changes in a way that
needs it.
In aeson 2.0, Text has been replaced by the Key type and HashMap by the
KeyMap interface. Accomodating this required adding some CPP in order to
still be able to compile with aeson < 2.0. The required changes were:
* Prevent Key from being re-exported by Utilities.Aeson, as it clashes
with git-annex's own Key type.
* Fix up convertion from String/Text to Key (or Text in aeson 1.*) in a
couple of places
* Import Data.Aeson.KeyMap instead of Data.HashMap.Strict, as they are
mostly API-compatible. insertWith needs to be replaced by unionWith,
however, as KeyMap lacks the former function.
