replace "pkgs" arguments with individual packages

scripts/niss-misc.nix

@@ -1,4 +1,4 @@
-{ pkgs ? import <nixpkgs> {},
+{ lib, stdenv, rakudo, execline,
   charFilters ? true,
   find-parent ? true,
   galleryHelpers ? true,
@@ -6,9 +6,7 @@
 }@inputs:
 
 let
-  inherit (pkgs) lib stdenv;
-
-  deps = with pkgs;
+  deps =
     (lib.filterAttrs (k: v: inputs.${k} or true) {
       galleryHelpers = [ rakudo ];
       charFilters    = [ rakudo ];