gbeplus: add for some reason

flake.nix

@@ -65,6 +65,7 @@
         attic-client = final.attic.override { clientOnly = true; };
         cups-dymo-patched = final.callPackage ./packages/cups-dymo { };
         cynthion = final.callPackage ./packages/cynthion { };
+        gbeplus = final.callPackage ./packages/gbeplus { };
         hactoolnet = final.callPackage ./packages/hactoolnet { };
         ipsw = final.callPackage ./packages/ipsw { };
         jlink = final.callPackage ./packages/jlink { };

packages/gbeplus/default.nix

@@ -0,0 +1,42 @@
+{
+  stdenv,
+  fetchFromGitHub,
+  cmake,
+  qt5,
+  SDL2,
+  SDL2_net,
+  SDL2_image,
+}:
+
+stdenv.mkDerivation rec {
+  pname = "gbe-plus";
+  version = "1.8";
+
+  src = fetchFromGitHub {
+    owner = "shonumi";
+    repo = pname;
+    rev = version;
+    hash = "sha256-9g29V13Ux5BeSg6f/NW9Vi5YJGRYUEPYONGivMYIYPs=";
+  };
+
+  patches = [ ./install-dirs.patch ];
+
+  postPatch = ''
+    substituteInPlace src/CMakeLists.txt src/qt/CMakeLists.txt \
+      --replace "SDL2::SDL2main" ""
+  '';
+
+  cmakeFlags = [ "-DCMAKE_INSTALL_SYSCONFDIR=${placeholder "out"}/etc" ];
+
+  nativeBuildInputs = [
+    cmake
+    qt5.wrapQtAppsHook
+  ];
+
+  buildInputs = [
+    SDL2
+    SDL2_net
+    SDL2_image
+    qt5.qtbase
+  ];
+}

packages/gbeplus/install-dirs.patch

@@ -0,0 +1,24 @@
+diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
+index 945cbde9..4e4c267e 100644
+--- a/src/CMakeLists.txt
++++ b/src/CMakeLists.txt
+@@ -13,9 +13,6 @@ endif()
+ 
+ set(SRCS main.cpp)
+ 
+-SET(USER_HOME $ENV{HOME} CACHE STRING "Target User Home")
+-SET(USER $ENV{USER} CACHE STRING "Target User")
+-
+ add_executable(gbe_plus ${SRCS})
+ target_link_libraries(gbe_plus common gba dmg sgb nds min)
+ target_link_libraries(gbe_plus SDL2::SDL2 SDL2::SDL2main)
+@@ -38,7 +35,6 @@ endif()
+ 
+ if(UNIX AND NOT APPLE)
+ 	install(TARGETS gbe_plus DESTINATION ${CMAKE_INSTALL_BINDIR})
+-	install(FILES gbe.ini DESTINATION ${USER_HOME}/.gbe_plus/)
+-	install(DIRECTORY data DESTINATION ${USER_HOME}/.gbe_plus)
+-	install(CODE "execute_process(COMMAND chown -R ${USER}:${USER} ${USER_HOME}/.gbe_plus)")
++	install(FILES gbe.ini DESTINATION ${CMAKE_INSTALL_SYSCONFDIR}/.gbe_plus/)
++	install(DIRECTORY data DESTINATION ${CMAKE_INSTALL_SYSCONFDIR}/.gbe_plus)
+ endif()