niri-session: just use niri-session, not real path

etcnixos/common.nix

@@ -56,33 +56,11 @@
     };
   };
 
-  # Create steam session script
-  environment.etc."steam-session-greetd".source = pkgs.writeShellScript "steam-session-greetd" ''
-    export STEAM_RUNTIME=1
-    export SDL_VIDEODRIVER=wayland
-    export QT_QPA_PLATFORM=wayland
-    export GDK_BACKEND=wayland
-    export XDG_CURRENT_DESKTOP=Steam
-    export XDG_SESSION_TYPE=wayland
-    export MANGOHUD=1
-    exec ${pkgs.gamescope}/bin/gamescope --adaptive-sync --hdr-enabled --mangoapp --rt --steam -- ${pkgs.steam}/bin/steam -pipewire-dmabuf -tenfoot
-  '';
-
-  # Create system-wide session files
-  environment.etc."xdg/wayland-sessions/steam-session.desktop".text = ''
-    [Desktop Entry]
-    Name=Steam Session
-    Comment=Steam Deck-like gaming session with gamescope
-    Exec=/etc/steam-session-greetd
-    Type=Application
-    DesktopNames=steam
-  '';
-
   environment.etc."xdg/wayland-sessions/niri-session.desktop".text = ''
     [Desktop Entry]
     Name=Niri Session
     Comment=Niri Wayland compositor
-    Exec=${pkgs.niri}/bin/niri-session
+    Exec=niri-session
     Type=Application
     DesktopNames=niri
   '';

etcnixos/steam.nix

@@ -25,4 +25,26 @@
     goverlay
     yad
   ];
+
+  # Create steam session script
+  environment.etc."steam-session-greetd".source = pkgs.writeShellScript "steam-session-greetd" ''
+    export STEAM_RUNTIME=1
+    export SDL_VIDEODRIVER=wayland
+    export QT_QPA_PLATFORM=wayland
+    export GDK_BACKEND=wayland
+    export XDG_CURRENT_DESKTOP=Steam
+    export XDG_SESSION_TYPE=wayland
+    exec ${pkgs.gamescope}/bin/gamescope --adaptive-sync --hdr-enabled --mangoapp --rt --steam -- ${pkgs.steam}/bin/steam -pipewire-dmabuf -tenfoot
+  '';
+
+  # Create system-wide session files
+  environment.etc."xdg/wayland-sessions/steam-session.desktop".text = ''
+    [Desktop Entry]
+    Name=Steam Session
+    Comment=Steam Deck-like gaming session with gamescope
+    Exec=/etc/steam-session-greetd
+    Type=Application
+    DesktopNames=steam
+  '';
+
 }