mesa.drivers is basically an implementation detail and should never be used
as a dependency of other expressions. It also no longer exists on Darwin.
mesa.osmesa is very niche and should generally be avoided.
mesa.libdrm is used in exactly one place and it's irrelevant there.
The nixpkgs-unstable channel's programs.sqlite was used to identify
packages producing exactly one binary, and these automatically added
to their package definitions wherever possible.
