From 7330ec015143a8073b1a15ef9cb7afd1cd6917ef Mon Sep 17 00:00:00 2001
From: Malte Poll <mp@edgeless.systems>
Date: Tue, 29 Aug 2023 16:26:53 +0200
Subject: [PATCH] mkosi: apply mcopy SOURCE_DATE_EPOCH patch to systemd

Previously, mcopy SOURCE_DATE_EPOCH wasn't propageted to mcopy.
This patch enables reproducible builds with mkosi.

Co-authored-by: Paul Meyer <49727155+katexochen@users.noreply.github.com>
Signed-off-by: Malte Poll <mp@edgeless.systems>
---
 pkgs/tools/virtualization/mkosi/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/tools/virtualization/mkosi/default.nix b/pkgs/tools/virtualization/mkosi/default.nix
index 2de32aa4bfac..f042cfebb08c 100644
--- a/pkgs/tools/virtualization/mkosi/default.nix
+++ b/pkgs/tools/virtualization/mkosi/default.nix
@@ -29,6 +29,11 @@ let
         url = "https://github.com/systemd/systemd/commit/81e04781106e3db24e9cf63c1d5fdd8215dc3f42.patch";
         hash = "sha256-KO3poIsvdeepPmXWQXNaJJCPpmBb4sVmO+ur4om9f5k=";
       })
+      # Propagate SOURCE_DATE_EPOCH to mcopy. Remove when upgrading to systemd 255.
+      (fetchpatch {
+        url = "https://github.com/systemd/systemd/commit/4947de275a5553399854cc748f4f13e4ae2ba069.patch";
+        hash = "sha256-YIZZyc3f8pQO9fMAxiNhDdV8TtL4pXoh+hwHBzRWtfo=";
+      })
     ];
   })).override {
     withRepart = true;