From 6382598677548d5b483dce4ab380067cd91af6d2 Mon Sep 17 00:00:00 2001
From: Bernardo Meurer <bernardo@meurer.org>
Date: Mon, 25 Apr 2022 16:17:21 -0700
Subject: [PATCH] linkFarm: make last entry win in case of list repeats

---
 pkgs/build-support/trivial-builders.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/build-support/trivial-builders.nix b/pkgs/build-support/trivial-builders.nix
index f29027aa1c68..39c5787e3823 100644
--- a/pkgs/build-support/trivial-builders.nix
+++ b/pkgs/build-support/trivial-builders.nix
@@ -489,7 +489,8 @@ rec {
   let
     entries' =
       if (lib.isAttrs entries) then entries
-      else if (lib.isList entries) then lib.listToAttrs (map (x: lib.nameValuePair x.name x.path) entries)
+      # We do this foldl to have last-wins semantics in case of repeated entries
+      else if (lib.isList entries) then lib.foldl (a: b: a // { "${b.name}" = b.path; }) { } entries
       else throw "linkFarm entries must be either attrs or a list!";
 
     linkCommands = lib.mapAttrsToList (name: path: ''