1: { callPackage, lib, withArgsOf }:
2:
3: with builtins;
4: with lib;
5:
6: # Support an "inner-composition" of "f" and "g", which behaves like
7: # "args: f (g args)" but has explicit named arguments, to allow
8: # "functionArgs" to work (as used by "callPackage").
9: f: g:
10: withArgsOf g (args: f (g args))