From f497a0cd4df1b2dcbf37b8d2cbbc259ae09fbd85 Mon Sep 17 00:00:00 2001
From: Bobby Rong <rjl931189261@126.com>
Date: Sat, 19 Apr 2025 11:58:14 +0800
Subject: [PATCH] pantheon.appcenter: Do not use compressed appstream metadata

---
 pkgs/desktops/pantheon/apps/appcenter/default.nix | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/pkgs/desktops/pantheon/apps/appcenter/default.nix b/pkgs/desktops/pantheon/apps/appcenter/default.nix
index e6dc305588b3..ea145ad388c0 100644
--- a/pkgs/desktops/pantheon/apps/appcenter/default.nix
+++ b/pkgs/desktops/pantheon/apps/appcenter/default.nix
@@ -65,6 +65,14 @@ stdenv.mkDerivation rec {
     "-Dcurated=false"
   ];
 
+  postPatch = ''
+    # Since we do not build libxml2 with legacy support,
+    # we cannot use compressed appstream metadata.
+    # https://gitlab.gnome.org/GNOME/libxml2/-/commit/f7f14537727bf6845d0eea08cd1fdc30accc2a53
+    substituteInPlace src/Core/FlatpakBackend.vala \
+      --replace-fail ".xml.gz" ".xml"
+  '';
+
   passthru = {
     updateScript = nix-update-script { };
   };