vdrift: split data into separate derivation

This allows vdrift to be built on hydra without taking up a large amount
of space.

pkgs/games/vdrift/0001-Ignore-missing-data-for-installation.patch

@@ -0,0 +1,27 @@
+From 7ebe252a8488a63675d1c50c0faa1bdc5ff97889 Mon Sep 17 00:00:00 2001
+From: Linus Heckemann <git@sphalerite.org>
+Date: Fri, 5 Jan 2018 21:27:28 +0100
+Subject: [PATCH] Ignore missing data for installation
+
+This is for packaging vdrift separately from its data in nixpkgs.
+---
+ SConstruct | 3 ---
+ 1 file changed, 3 deletions(-)
+
+diff --git a/SConstruct b/SConstruct
+index 4394de0b..beef29a4 100644
+--- a/SConstruct
++++ b/SConstruct
+@@ -511,9 +511,6 @@ env.Alias(target = 'bin-package', source = bin_archive)
+ #----------------#
+ Export(['env', 'version', 'src_dir', 'bin_dir'])
+ if 'install' in COMMAND_LINE_TARGETS:
+-    if not os.path.isfile('data/SConscript'):
+-        raise 'VDrift data not found. Please make sure data is placed in vdrift directory. See README.md and http://wiki.vdrift.net.' 
+-    SConscript('data/SConscript')
+     # desktop appdata installation
+     install_desktop = env.Install(env['destdir'] + env['prefix'] + '/share/applications', 'vdrift.desktop')
+     install_appdata = env.Install(env['destdir'] + env['prefix'] + '/share/appdata', 'vdrift.appdata.xml')
+-- 
+2.15.0
+

pkgs/games/vdrift/default.nix

@@ -1,8 +1,15 @@
-{ stdenv, fetchFromGitHub, fetchsvn, pkgconfig, scons, mesa, SDL2, SDL2_image, libvorbis,
+{ stdenv, fetchFromGitHub, fetchsvn, pkgconfig, scons, mesa, SDL2, SDL2_image
-  bullet, curl, gettext }:
+, libvorbis, bullet, curl, gettext, writeTextFile, writeShellScriptBin
 
-stdenv.mkDerivation rec {
+, data ? fetchsvn {
+    url = "svn://svn.code.sf.net/p/vdrift/code/vdrift-data";
+    rev = 1386;
+    sha256 = "0ka6zir9hg0md5p03dl461jkvbk05ywyw233hnc3ka6shz3vazi1";
+  }
+}:
+let
   version = "git";
+  bin = stdenv.mkDerivation {
     name = "vdrift-${version}";
 
     src = fetchFromGitHub {
@@ -12,18 +19,12 @@ stdenv.mkDerivation rec {
       sha256 = "001wq3c4n9wzxqfpq40b1jcl16sxbqv2zbkpy9rq2wf9h417q6hg";
     };
 
-  data = fetchsvn {
-    url = "svn://svn.code.sf.net/p/vdrift/code/vdrift-data";
-    rev = 1386;
-    sha256 = "0ka6zir9hg0md5p03dl461jkvbk05ywyw233hnc3ka6shz3vazi1";
-  };
-
     nativeBuildInputs = [ pkgconfig ];
     buildInputs = [ scons mesa SDL2 SDL2_image libvorbis bullet curl gettext ];
 
+    patches = [ ./0001-Ignore-missing-data-for-installation.patch ];
+
     buildPhase = ''
-    cp -r --reflink=auto $data data
-    chmod -R +w data
       sed -i -e s,/usr/local,$out, SConstruct
       export CXXFLAGS="$(pkg-config --cflags SDL2_image)"
       scons -j$NIX_BUILD_CORES
@@ -34,8 +35,26 @@ stdenv.mkDerivation rec {
       description = "Car racing game";
       homepage = http://vdrift.net/;
       license = stdenv.lib.licenses.gpl2Plus;
-    maintainers = with stdenv.lib.maintainers; [viric lheckemann];
+      maintainers = with stdenv.lib.maintainers; [viric];
       platforms = stdenv.lib.platforms.linux;
+    };
+  };
+  wrappedName = "vdrift-${version}-with-data-${toString data.rev}";
+in writeTextFile {
+  name = wrappedName;
+  text = ''
+    export VDRIFT_DATA_DIRECTORY="${data}"
+    exec ${bin}/bin/vdrift "$@"
+  '';
+  destination = "/bin/vdrift";
+  executable = true;
+  checkPhase = ''
+    ${stdenv.shell} -n $out/bin/vdrift
+  '';
+} // {
+  meta = bin.meta // {
     hydraPlatforms = [];
   };
+  unwrapped = bin;
+  inherit bin data;
 }

pkgs/top-level/all-packages.nix

@@ -18533,6 +18533,9 @@ with pkgs;
 
   vdrift = callPackage ../games/vdrift { };
 
+  # To ensure vdrift's code is built on hydra
+  vdrift-bin = vdrift.bin;
+
   vectoroids = callPackage ../games/vectoroids { };
 
   vessel = callPackage_i686 ../games/vessel { };