build non-gui by default

default-gui.nix

@@ -0,0 +1,49 @@
+{
+  lib,
+  stdenv,
+  cmake,
+  libGL,
+  SDL2,
+  xorg.libX11
+  installShellFiles,
+  ...
+}:
+let
+  cmakeContent = builtins.readFile ./CMakeLists.txt;
+  cmakeLines = lib.splitString "\n" cmakeContent;
+  versionLine = lib.findFirst (l: builtins.match ".*set\\(KE_VERSION \".+\"\\).*" l
+  version = builtins.head (builtins.match ".*set\\(KE_VERSION \"(.+)\"\\).*" versio
+in
+pkgs.stdenv.mkDerivation {
+  pname = "kte";
+  inherit version;
+
+  src = ./.;
+
+  nativeBuildInputs = [ pkgs.cmake pkgs.pkg-config ];
+  buildInputs = with pkgs; [
+    ncurses
+    SDL2
+    libGL
+    xorg.libX11
+  ];
+
+  cmakeFlags = [
+    "-DBUILD_GUI=ON"
+    "-DCURSES_NEED_NCURSES=TRUE"
+    "-DCURSES_NEED_WIDE=TRUE"
+  ];
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/bin
+    cp kte $out/bin/
+    cp kge $out/bin/
+
+    installManPage ../docs/kte.1
+    installManPage ../docs/kte.1
+
+    runHook postInstall
+  '';
+}