Use installPhase instead of builder for BSOD

pkgs/misc/emulators/bsod/builder.sh

@@ -1,8 +0,0 @@
-source $stdenv/setup
-
-tar xvfz $src
-cd bsod-*
-make
-mkdir -p $out/bin
-cp bsod $out/bin
-

pkgs/misc/emulators/bsod/default.nix

@@ -3,8 +3,6 @@
 stdenv.mkDerivation {
   name = "bsod-0.1";
 
-  builder = ./builder.sh;
-
   src = fetchurl {
     url = http://www.vanheusden.com/bsod/bsod-0.1.tgz;
     sha256 = "0hqwacazyq5rhc04j8w8w0j0dgb6ca8k66c9lxf6bsyi6wvbhvmd";
@@ -12,6 +10,11 @@ stdenv.mkDerivation {
 
   buildInputs = [ ncurses ];
 
+  installPhase = ''
+    ensureDir $out/bin
+    cp bsod $out/bin
+  '';
+
   meta = {
     description = "Blue Screen Of Death emulator for Unix";
     longDescription = "