Pretix wants to build locales according to the user configuration, which
does not exist in our case and leads to certain languages not being
built.
As our packages are immutable, the user config will never be able to
influence them and we therefore must enable all languages at build time.
Closes: #297708
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.
