packages-config: refactor and simplification

Now simply inherits attrsets from super directly instead of mapping getAttr over
a list of strings.

Filtering isn't really needed as non-existent subsets should just be removed
from this list when removing them from Nixpkgs (such an action warrants a
tree-wide search which should come across this file).

recurseIntoAttrs can simply be mapAttr'd now.

Some subsets have been removed because they no longer exist.

Sorted the list while I was at it.

0 files changed, 0 insertions, 0 deletions