Added overlay package for ly

pkgs/default.nix

@@ -9,6 +9,8 @@ let
     wqy-zenhei = prev.callPackage ./fonts/wqy-zenhei.nix { };
     wqy-microhei = prev.callPackage ./fonts/wqy-microhei.nix { };
     wqy-bitmapsong = prev.callPackage ./fonts/wqy-bitmapsong.nix { };
+
+    ly = prev.callPackage ./programs/ly.nix { };
   };
 in
 {

pkgs/programs/ly.nix

@@ -0,0 +1,47 @@
+{
+  stdenv,
+  lib,
+  fetchFromGitHub,
+  linux-pam,
+  libxcb,
+  makeBinaryWrapper,
+  zig_0_12,
+  callPackage,
+  nixosTests,
+}:
+
+stdenv.mkDerivation {
+  pname = "ly";
+  version = "1.0.2";
+
+  src = fetchFromGitHub {
+    owner = "fairyglade";
+    repo = "ly";
+    rev = "v1.0.2";
+    hash = "sha256-VUtNEL7Te/ba+wvL0SsUHlyv2NPmkYKs76TnW8r3ysw=";
+  };
+
+  nativeBuildInputs = [
+    makeBinaryWrapper
+    zig_0_12.hook
+  ];
+  buildInputs = [
+    libxcb
+    linux-pam
+  ];
+
+  postPatch = ''
+    ln -s ${callPackage ./deps.nix { }} $ZIG_GLOBAL_CACHE_DIR/p
+  '';
+
+  passthru.tests = { inherit (nixosTests) ly; };
+
+  meta = with lib; {
+    description = "TUI display manager";
+    license = licenses.wtfpl;
+    homepage = "https://github.com/fairyglade/ly";
+    maintainers = [ maintainers.vidister ];
+    platforms = platforms.linux;
+    mainProgram = "ly";
+  };
+}