From 131c52738db1f1c96b024d8bd1459fdfabd31c7b Mon Sep 17 00:00:00 2001
From: jecaro <jeancharles.quillet@gmail.com>
Date: Sat, 7 Feb 2026 15:49:07 +0100
Subject: [PATCH 1/2] Add pegasus frontend

---
 system/configuration.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/system/configuration.nix b/system/configuration.nix
index 4aff98a..acb1081 100644
--- a/system/configuration.nix
+++ b/system/configuration.nix
@@ -54,6 +54,7 @@
   environment.systemPackages = [
     pkgs.alsa-utils
     pkgs.cs-hud
+    pkgs.pegasus-frontend
     pkgs.retroarch
     pkgs.vim
     pkgs.wiringpi

From 109e2b578342c6bf27afc6e96188f6ac3b56050c Mon Sep 17 00:00:00 2001
From: jecaro <jeancharles.quillet@gmail.com>
Date: Thu, 12 Feb 2026 14:45:18 +0100
Subject: [PATCH 2/2] Make pegasus build with the kms patch

---
 flake.nix            | 17 +++++++++++++++--
 private-headers.diff | 22 ++++++++++++++++++++++
 2 files changed, 37 insertions(+), 2 deletions(-)
 create mode 100644 private-headers.diff

diff --git a/flake.nix b/flake.nix
index 60e1604..059771c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -49,11 +49,20 @@
     , ...
     }:
     let
+      pegasus-overlay =
+        (final: prev: {
+          pegasus-frontend = prev.pegasus-frontend.overrideAttrs (old: {
+            patches = [ "${old.src}/etc/rpi4/kms_launch_fix.diff" ./private-headers.diff ];
+          });
+        });
       pkgs = import nixpkgs {
         system = "x86_64-linux";
         overlays =
           (import ./overlays/arduino arduino-nix arduino-index) ++
-          [ (import ./overlays/cs-firmware) ];
+          [
+            (import ./overlays/cs-firmware)
+            pegasus-overlay
+          ];
       };
 
       cs-firmware = pkgs.cs-firmware;
@@ -93,12 +102,14 @@
                     (import ./overlays/alsa-utils.nix)
                     (import ./overlays/cs-hud)
                     (import ./overlays/flash-cs-firmware.nix)
-                    (import ./overlays/mesa.nix)
+                    # Use the default mesa package for now
+                    # (import ./overlays/mesa.nix)
                     (import ./overlays/ovmerge.nix ovmerge-src)
                     (import ./overlays/retroarch.nix retroarch-src)
                     (import ./overlays/rtl8723-firmware.nix)
                     (import ./overlays/uboot.nix)
                     (import ./overlays/wiringpi)
+                    pegasus-overlay
                   ] ++ (import ./overlays/arduino arduino-nix arduino-index);
                 };
               })
@@ -114,6 +125,8 @@
       };
 
       packages.x86_64-linux.cs-firmware = cs-firmware;
+      # To debug the build on the host
+      packages.x86_64-linux.pegasus-frontend = pkgs.pegasus-frontend;
 
       devShell.x86_64-linux =
         pkgs.mkShell {
diff --git a/private-headers.diff b/private-headers.diff
new file mode 100644
index 0000000..f29f2fa
--- /dev/null
+++ b/private-headers.diff
@@ -0,0 +1,22 @@
+diff --git a/src/backend/CMakeLists.txt b/src/backend/CMakeLists.txt
+index 08de0be7..88ea34e5 100644
+--- a/src/backend/CMakeLists.txt
++++ b/src/backend/CMakeLists.txt
+@@ -43,6 +43,7 @@ pegasus_require_qt(COMPONENTS
+     Multimedia
+     Sql
+     Svg
++    EglFSDeviceIntegration
+ )
+ target_link_libraries(pegasus-backend PUBLIC
+     Qt::Qml
+@@ -52,6 +53,9 @@ target_link_libraries(pegasus-backend PUBLIC
+     Qt::Svg
+     SortFilterProxyModel
+ )
++target_include_directories(pegasus-backend PRIVATE
++  ${Qt5EglFSDeviceIntegration_PRIVATE_INCLUDE_DIRS}
++)
+ 
+ include(PegasusCommonProps)
+ pegasus_add_common_props_optimized(pegasus-backend)