Merge pull request #15793 from abbradar/unity3d-pkg

Unity3D package

nixos/modules/module-list.nix

···
   ./programs/ssh.nix
   ./programs/ssmtp.nix
   ./programs/tmux.nix
+  ./programs/unity3d.nix
   ./programs/venus.nix
   ./programs/wvdial.nix
   ./programs/xfs_quota.nix

nixos/modules/programs/unity3d.nix

···
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let cfg = config.programs.unity3d;
+in {
+
+  options = {
+    programs.unity3d.enable = mkEnableOption "Unity3D, a game development tool";
+  };
+
+  config = mkIf cfg.enable {
+    security.setuidOwners = [{
+      program = "unity-chrome-sandbox";
+      source = "${pkgs.unity3d.sandbox}/bin/unity-chrome-sandbox";
+      owner = "root";
+      #group = "root";
+      setuid = true;
+      #setgid = true;
+    }];
+
+    environment.systemPackages = [ pkgs.unity3d ];
+  };
+
+}

pkgs/development/tools/unity3d/default.nix

···
+{ stdenv, lib, fetchurl, makeWrapper, fakeroot, file, getopt
+, gtk2, gdk_pixbuf, glib, mesa_glu, postgresql, nss, nspr
+, alsaLib, GConf, cups, libcap, fontconfig, freetype, pango
+, cairo, dbus, expat, zlib, libpng12, nodejs, gnutar, gcc, gcc_32bit
+, libX11, libXcursor, libXdamage, libXfixes, libXrender, libXi
+, libXcomposite, libXext, libXrandr, libXtst, libSM, libICE, libxcb
+, mono, libgnomeui, gnome_vfs, gnome-sharp, gtk-sharp
+}:
+
+let
+  libPath64 = lib.makeLibraryPath [
+    gcc.cc gtk2 gdk_pixbuf glib mesa_glu postgresql nss nspr
+    alsaLib GConf cups libcap fontconfig freetype pango
+    cairo dbus expat zlib libpng12
+    libX11 libXcursor libXdamage libXfixes libXrender libXi
+    libXcomposite libXext libXrandr libXtst libSM libICE libxcb
+  ];
+  libPath32 = lib.makeLibraryPath [ gcc_32bit.cc ];
+  binPath = lib.makeBinPath [ nodejs gnutar ];
+  developBinPath = lib.makeBinPath [ mono ];
+  developLibPath = lib.makeLibraryPath [
+    glib libgnomeui gnome_vfs gnome-sharp gtk-sharp gtk-sharp.gtk
+  ];
+  developDotnetPath = lib.concatStringsSep ":" [
+    gnome-sharp gtk-sharp
+  ];
+
+  ver = "5.3.5";
+  build = "f1";
+  date = "20160525";
+  pkgVer = "${ver}${build}";
+  fullVer = "${pkgVer}+${date}";
+
+in stdenv.mkDerivation rec {
+  name = "unity-editor-${version}";
+  version = pkgVer;
+
+  src = fetchurl {
+    url = "http://download.unity3d.com/download_unity/linux/unity-editor-installer-${fullVer}.sh";
+    sha256 = "0lmc65175fdvbyn3565pjlg6cc4l5i58fj7bxzi5cqykkbzv5wdm";
+  };
+
+  nosuidLib = ./unity-nosuid.c;
+
+  nativeBuildInputs = [ makeWrapper fakeroot file getopt ];
+
+  outputs = [ "out" "monodevelop" "sandbox" ];
+
+  unpackPhase = ''
+    echo -e 'q\ny' | fakeroot sh $src
+    sourceRoot="unity-editor-${pkgVer}"
+  '';
+
+  buildPhase = ''
+    patchFile() {
+      ftype="$(file -b "$1")"
+      if [[ "$ftype" =~ LSB\ .*dynamically\ linked ]]; then
+        if [[ "$ftype" =~ 32-bit ]]; then
+          rpath="${libPath32}"
+          intp="$(cat $NIX_CC/nix-support/dynamic-linker-m32)"
+        else
+          rpath="${libPath64}"
+          intp="$(cat $NIX_CC/nix-support/dynamic-linker)"
+        fi
+
+        rpath="$(patchelf --print-rpath "$1"):$rpath"
+        if [[ "$ftype" =~ LSB\ shared ]]; then
+          patchelf \
+            --set-rpath "$rpath" \
+            "$1"
+        elif [[ "$ftype" =~ LSB\ executable ]]; then
+          patchelf \
+            --set-rpath "$rpath" \
+            --interpreter "$intp" \
+            "$1"
+        fi
+      fi
+    }
+
+    cd Editor
+
+    $CC -fPIC -shared -o libunity-nosuid.so $nosuidLib -ldl
+    strip libunity-nosuid.so
+
+    # Exclude PlaybackEngines to build something that can be run on FHS-compliant Linuxes
+    find . -name PlaybackEngines -prune -o -executable -type f -print | while read path; do
+      patchFile "$path"
+    done
+
+    cd ..
+  '';
+
+  installPhase = ''
+    install -Dm755 Editor/chrome-sandbox $sandbox/bin/unity-chrome-sandbox
+
+    unitydir="$out/opt/Unity/Editor"
+    mkdir -p $unitydir
+    mv Editor/* $unitydir
+    ln -sf /var/setuid-wrappers/unity-chrome-sandbox $unitydir/chrome-sandbox
+
+    mkdir -p $out/share/applications
+    sed "/^Exec=/c\Exec=$out/bin/unity-editor" \
+      < unity-editor.desktop \
+      > $out/share/applications/unity-editor.desktop
+
+    install -D unity-editor-icon.png $out/share/icons/hicolor/256x256/apps/unity-editor-icon.png
+
+    mkdir -p $out/bin
+    makeWrapper $unitydir/Unity $out/bin/unity-editor \
+      --prefix LD_PRELOAD : "$unitydir/libunity-nosuid.so" \
+      --prefix PATH : "${binPath}"
+
+    developdir="$monodevelop/opt/Unity/MonoDevelop"
+    mkdir -p $developdir
+    mv MonoDevelop/* $developdir
+
+    mkdir -p $monodevelop/share/applications
+    sed "/^Exec=/c\Exec=$monodevelop/bin/unity-monodevelop" \
+      < unity-monodevelop.desktop \
+      > $monodevelop/share/applications/unity-monodevelop.desktop
+
+    mkdir -p $monodevelop/bin
+    makeWrapper $developdir/bin/monodevelop $monodevelop/bin/unity-monodevelop \
+      --prefix PATH : "${developBinPath}" \
+      --prefix LD_LIBRARY_PATH : "${developLibPath}" \
+      --prefix MONO_GAC_PREFIX : "${developDotnetPath}"
+  '';
+
+  dontStrip = true;
+
+  meta = with stdenv.lib; {
+    homepage = https://unity3d.com/;
+    description = "Game development tool";
+    longDescription = ''
+      Popular development platform for creating 2D and 3D multiplatform games
+      and interactive experiences.
+    '';
+    license = licenses.unfree;
+    platforms = [ "x86_64-linux" ];
+    maintainers = with maintainers; [ jb55 ];
+  };
+}

pkgs/development/tools/unity3d/unity-nosuid.c

···
+#define _GNU_SOURCE
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <dlfcn.h>
+
+static const char sandbox_path[] = "/chrome-sandbox";
+
+int __xstat(int ver, const char* path, struct stat* stat_buf) {
+  static int (*original_xstat)(int, const char*, struct stat*) = NULL;
+  if (original_xstat == NULL) {
+    int (*fun)(int, const char*, struct stat*) = dlsym(RTLD_NEXT, "__xstat");
+    if (fun == NULL) {
+      return -1;
+    };
+    original_xstat = fun;
+  };
+
+  int res = (*original_xstat)(ver, path, stat_buf);
+  if (res == 0) {
+    char* pos = strstr(path, sandbox_path);
+    if (pos != NULL && *(pos + sizeof(sandbox_path) - 1) == '\0') {
+      printf("Lying about chrome-sandbox access rights...\n");
+      stat_buf->st_uid = 0;
+      stat_buf->st_gid = 0;
+      stat_buf->st_mode = 0104755;
+    };
+  }
+  return res;
+}

pkgs/top-level/all-packages.nix

···
 
   ums = callPackage ../servers/ums { };
 
+  unity3d = callPackage ../development/tools/unity3d {
+    stdenv = stdenv_32bit;
+    gcc_32bit = pkgsi686Linux.gcc;
+    inherit (gnome2) GConf libgnomeui gnome_vfs;
+  };
+
   urbit = callPackage ../misc/urbit { };
 
   utf8proc = callPackage ../development/libraries/utf8proc { };