(cherry picked from commit 347680d)

This commit makes pkgs.protobuf the input for libarcus, since the latter
searches for the native protobuf library and not for the Python module.

(cherry picked from commit 6a523a1)

(cherry picked from commit c14eed2)

pytest.importorskip() doesn't work when we don't use pytest to run tests

(cherry picked from commit 654e6ec)

(cherry picked from commit 1435d45)

(cherry picked from commit b36dc66)

(cherry picked from commit a2736d2)

See https://www.postgresql.org/about/news/1920/ for release information.

(cherry picked from commit d1dd3a1)

See https://www.postgresql.org/about/news/1920/ for release information.

(cherry picked from commit 74c715e)

See https://www.postgresql.org/about/news/1920/ for release information.

(cherry picked from commit 70a31c2)

See https://www.postgresql.org/about/news/1920/ for release information.

(cherry picked from commit a90cf49)

The latest changes to support better cross-compilation compatibility
have introduced a stricter handling of dependency specification in
python. Since b4acd97, gfortran should be put into nativeBuildInputs,
as it's a build-time only dependency for wrf-python. Similarly, mock is
only required when testing, so it should go to checkInputs.

(cherry picked from commit 36f5c0d)