nix: flake cleanup

- Removed all outputs except for "packages"
- Track nixos-unstable instead of stable
- Cleanup installPhase

default.nix

@@ -1,30 +1,55 @@
-{ lib, stdenv, fetchFromGitHub, src, pkg-config, cmake, ninja, libdrm, libinput
-, libxcb, libxkbcommon, mesa, mount, pango, wayland, wayland-protocols
-, wayland-scanner, wlroots, xcbutilwm, xwayland, enableXWayland ? true }:
-
-stdenv.mkDerivation rec {
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  pkg-config,
+  cmake,
+  ninja,
+  libdrm,
+  libinput,
+  libxcb,
+  libxkbcommon,
+  mesa,
+  mount,
+  pango,
+  wayland,
+  wayland-protocols,
+  wayland-scanner,
+  wlroots,
+  xcbutilwm,
+  xwayland,
+  enableXWayland ? true,
+  version ? "git",
+}:
+stdenv.mkDerivation {
   pname = "hyprland";
-  version = "git";
-  inherit src;
+  inherit version;
+  src = ./.;
 
-  nativeBuildInputs = [ cmake ninja pkg-config wayland ]
-    ++ lib.optional enableXWayland xwayland;
-
-  buildInputs = [
-    libdrm
-    libinput
-    libxcb
-    libxkbcommon
-    mesa
-    pango
-    wayland-protocols
-    wayland-scanner
-    wlroots
-    (wlroots.override { inherit enableXWayland; })
-    xcbutilwm
+  nativeBuildInputs = [
+    cmake
+    ninja
+    pkg-config
   ];
 
-  cmakeFlags = [ "-DCMAKE_BUILD_TYPE=Release" ]
+  buildInputs =
+    [
+      libdrm
+      libinput
+      libxcb
+      libxkbcommon
+      mesa
+      pango
+      wayland
+      wayland-protocols
+      wayland-scanner
+      (wlroots.override {inherit enableXWayland;})
+      xcbutilwm
+    ]
+    ++ lib.optional enableXWayland xwayland;
+
+  cmakeFlags =
+    ["-DCMAKE_BUILD_TYPE=Release"]
     ++ lib.optional (!enableXWayland) "-DNO_XWAYLAND=true";
 
   prePatch = ''
@@ -38,25 +63,21 @@ stdenv.mkDerivation rec {
   '';
 
   installPhase = ''
-    cd ../
-    mkdir -p $out/share/wayland-sessions
-    cp ./example/hyprland.desktop $out/share/wayland-sessions
-    mkdir -p $out/bin
-    cp ./build/Hyprland $out/bin
-    cp ./hyprctl/hyprctl $out/bin
-    mkdir -p $out/share/hyprland
-    cp ./assets/wall_2K.png $out/share/hyprland
-    cp ./assets/wall_4K.png $out/share/hyprland
-    cp ./assets/wall_8K.png $out/share/hyprland
+    pushd ..
+    install -Dm644 ./example/hyprland.desktop -t $out/share/wayland-sessions
+    install -Dm755 ./build/Hyprland -t $out/bin
+    install -Dm755 ./hyprctl/hyprctl -t $out/bin
+    install -Dm644 ./assets/* -t $out/share/hyprland
+    popd
   '';
 
-  passthru.providedSessions = [ "hyprland" ];
+  passthru.providedSessions = ["hyprland"];
 
   meta = with lib; {
     homepage = "https://github.com/vaxerski/Hyprland";
-    description =
-      "A dynamic tiling Wayland compositor that doesn't sacrifice on its looks";
+    description = "A dynamic tiling Wayland compositor that doesn't sacrifice on its looks";
     license = licenses.bsd3;
     platforms = platforms.linux;
+    mainProgram = "Hyprland";
   };
 }