pkgs: add zutty, use it on stan and europa

hosts/europa/default.nix

@@ -231,6 +231,9 @@ in {
     virt-manager
     yt-dlp
     zig
+
+    (callPackage ../../pkgs/zutty.nix { })
+
   ];
 
   # for Pharo

hosts/stan/default.nix

@@ -121,6 +121,8 @@ in {
     virt-manager
     wireshark
     zig
+
+    (callPackage ../../pkgs/zutty.nix { })
   ];
 
   virtualisation.libvirtd.enable = true;

pkgs/zutty.nix

@@ -0,0 +1,65 @@
+{ lib, stdenv, fetchpatch, fetchFromGitHub, pkgs, go-font, ... }:
+
+stdenv.mkDerivation rec {
+  pname = "zutty";
+  version = "0.13";
+
+  src = fetchFromGitHub {
+    owner = "tomszilagyi";
+    repo = "zutty";
+    rev = version;
+    sha256 = "sha256-1eB5GDhWGwyhiKzxpepzjQ44Co0ZeL9JJI5ppPE1TJw=";
+  };
+
+  patches = [
+    ./zutty_go.diff
+  ];
+
+  nativeBuildInputs = with pkgs; [
+    gcc
+    pkg-config
+    python
+    wafHook
+    xlibsWrapper
+    xorg.libXmu
+    #xorg.libXau
+    #xorg.libXdmcp
+    libGL
+  ];
+
+  buildInputs = with pkgs; [ freetype fontconfig ];
+
+  prePatch = ''
+  substituteInPlace src/options.h \
+    --replace "/usr/share/fonts" "${go-font}/share/fonts"
+  '';
+
+  postInstall = ''
+    mkdir -p $out/share/applications/
+    for size in 16 32 48 64 96 128; do
+      mkdir -p $out/share/icons/hicolor/''${size}x''${size}/apps/
+      cp icons/zutty_''${size}x''${size}.png \
+        $out/share/icons/hicolor/''${size}x''${size}/apps/zutty.png
+    done
+    cp icons/zutty.desktop $out/share/applications/
+  '';
+
+  meta = with lib; {
+    description =
+      "X terminal emulator rendering through OpenGL ES Compute Shaders";
+    longDescription = ''
+      Zutty is a terminal emulator for the X Window System, functionally
+      similar to several other X terminal emulators such as xterm, rxvt and
+      countless others. It is also similar to other, much more modern,
+      GPU-accelerated terminal emulators such as Alacritty and Kitty. What
+      really sets Zutty apart is its radically simple, yet extremely
+      efficient rendering implementation, coupled with a sufficiently
+      complete feature set to make it useful for a wide range of users.
+    '';
+    homepage = "" "https://tomscii.sig7.se/zutty/";
+    license = licenses.gpl3;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ qbit ];
+  };
+}
+

pkgs/zutty_go.diff

@@ -0,0 +1,24 @@
+diff --git a/src/options.h b/src/options.h
+index 7bac116..67b2e1d 100644
+--- a/src/options.h
++++ b/src/options.h
+@@ -52,15 +52,15 @@ namespace zutty
+       // option       parseType implValue hardDefault helpDescr
+       {"altScroll",   NoArg,    "true",    "false",   "Alternate scroll mode"},
+       {"autoCopy",    NoArg,    "true",    "false",   "Sync primary to clipboard"},
+-      {"bg",          SepArg,   nullptr,   "#000",    "Background color"},
++      {"bg",          SepArg,   nullptr,   "#ffffea",    "Background color"},
+       {"boldColors",  NoArg,    "true",    "true",    "Enable bright for bold"},
+       {"border",      SepArg,   nullptr,   "2",       "Border width in pixels"},
+       {"cr",          SepArg,   nullptr,   nullptr,   "Cursor color"},
+       {"display",     SepArg,   nullptr,   nullptr,   "Display to connect to"},
+       {"dwfont",      SepArg,   nullptr,   "18x18ja", "Double-width font to use"},
+-      {"fg",          SepArg,   nullptr,   "#fff",    "Foreground color"},
+-      {"font",        SepArg,   nullptr,   "9x18",    "Font to use"},
+-      {"fontsize",    SepArg,   nullptr,   "16",      "Font size"},
++      {"fg",          SepArg,   nullptr,   "#000",    "Foreground color"},
++      {"font",        SepArg,   nullptr,   "go-mono",    "Font to use"},
++      {"fontsize",    SepArg,   nullptr,   "13",      "Font size"},
+       {"fontpath",    SepArg,   nullptr,   fontpath,  "Font search path"},
+       {"geometry",    SepArg,   nullptr,   "80x24",   "Terminal size in chars"},
+       {"glinfo",      NoArg,    "true",    "false",   "Print OpenGL information"},