Hi Guix,

Below is a patch to fix/update inputs for xapers. When I originally
added xapers I avoided including inputs upstream considers
"recommended."  After using Guix and xapers some more and thinking about
it, I now lean towards including these inputs because in this case not
including them will break xapers functionality in undocumented ways, and
the recommended packages are relatively modest. However, I am also
curious for future use if there is any documentation on standards for
handling "recommended" packages (e.g. packages other disdros would
assign a "recommended tag" to) in Guix? I couldn't find anything in the
manual, but it is very possible I missed something.

I also disabled the "xapers-adder" command from spawning an x-terminal
program (upstream uses Debian's "x-terminal-emulator"). By disabling
this function we avoid pushing an x-terminal program onto users, which I
find undesirable (if users need to spawn a terminal they can just wrap
xapers-adder e.g. "xterm -e xapers-adder %F"). However, I'm open to
other solutions if anyone else has another preference/idea (see comment
in patch).

Feedback very welcome, and thank you very much for your time/help.

Best,
Adam