Reusable utility nix functions

utils.nix

{
  removeAttrByPath = attrPath: attrs:
    let
      recurse = residualPath: currentPath: set:
        let
          # if on course continue recursion else just return value
          g = name: value:
            if name == lib.head residualPath
            then recurse (lib.tail residualPath) (currentPath ++ [name]) value
            else value;

          # if current path is same prune path
          f = name: _: currentPath ++ [name] != attrPath;

        in lib.mapAttrs g (lib.filterAttrs f set);
    in recurse attrPath [] attrs;
}