From 605de55fedb04cb54f95fed36e6fe12d8d7b9cfb Mon Sep 17 00:00:00 2001
From: Jade Lovelace <jadel@mercury.com>
Date: Thu, 18 Dec 2025 21:22:49 +0100
Subject: [PATCH] package.nix: stop rebuilding aws-sdk-cpp

A friend reported that this is rebuilding, which doesn't make any sense
because nixpkgs also has a lix from nightly that surely has the same
dependency and thus it surely should be built on hydra, right?

Turns out no, since they were overriding the requiredSystemFeatures to
remove big-parallel. Silly, but we can match that and get cache hits.

Change-Id: I4b1c8e850c6c38b03881354e978f41a10592ec95
---
 package.nix | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/package.nix b/package.nix
index d68dfd430..8917cb146 100644
--- a/package.nix
+++ b/package.nix
@@ -168,13 +168,19 @@ let
     if aws-sdk-cpp == null then
       null
     else
-      aws-sdk-cpp.override {
+      (aws-sdk-cpp.override {
         apis = [
           "s3"
           "transfer"
         ];
         customMemoryManagement = false;
-      };
+      }).overrideAttrs
+        {
+          # this overrideAttrs is needed to match the configuration of
+          # aws-sdk-cpp in nixpkgs' builds of lix so we don't rebuild this in
+          # practice
+          requiredSystemFeatures = [ ];
+        };
 
   # Reimplementation of Nixpkgs' Meson cross file, with some additions to make
   # it actually work.