Hello, everyone,

With tax season coming up in the US, I wanted to use OpenTaxSolver to
prepare my tax return. However, it wasn't packaged on Guix!

OTS assumes it'll be run directly from an unpacked tarball, so a patch
is also included to fix some of the issues that causes (namely that an
unmodified build will try to save files to the store instead of the
user's home directory).

This is my first time trying to package something for Guix, so if there
are any glaring issues or mistakes here, please let me know!

Skylar Hill