Since we're creating a new derivation, we drop the original package
attributes. Add our own meta.mainProgram to resolve those warnings.
Signed-off-by: Austin Horstman <khaneliman12@gmail.com>
Use finalPackage pattern with wrapper so that people who don't use the
service can benefit from the other options.
Signed-off-by: Austin Horstman <khaneliman12@gmail.com>