From 2381bcd86f3bc79fffc025ffd99ea75ae5a9b7b5 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Tue, 13 Mar 2018 18:04:29 +0100
Subject: [PATCH] maintainers/scripts/update.nix: use saner nubbing

---
 maintainers/scripts/update.nix | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/maintainers/scripts/update.nix b/maintainers/scripts/update.nix
index cb819a053c43..c637540a5aa4 100755
--- a/maintainers/scripts/update.nix
+++ b/maintainers/scripts/update.nix
@@ -6,11 +6,22 @@
 # TODO: add assert statements
 
 let
+  /* Remove duplicate elements from the list based on some extracted value. O(n^2) complexity.
+   */
+  nubOn = f: list:
+    if list == [] then
+      []
+    else
+      let
+        x = pkgs.lib.head list;
+        xs = pkgs.lib.filter (p: f x != f p) (pkgs.lib.drop 1 list);
+      in
+        [x] ++ nubOn f xs;
 
   pkgs = import ./../../default.nix { };
 
   packagesWith = cond: return: set:
-    pkgs.lib.unique
+    nubOn (pkg: pkg.updateScript)
       (pkgs.lib.flatten
         (pkgs.lib.mapAttrsToList
           (name: pkg: