blastem: stay with python2

pkgs/misc/emulators/blastem/default.nix

···
-{ lib, stdenv, fetchurl, fetchFromGitHub, pkg-config, SDL2, glew, xcftools, python, pillow, makeWrapper }:
+{ lib, stdenv, fetchurl, fetchFromGitHub, pkg-config, SDL2, glew, xcftools, python2Packages, makeWrapper }:
 
 let
   vasm =
···
     sha256 = "07wzbmzp0y8mh59jxg81q17gqagz3psxigxh8dmzsipgg68y6a8r";
   };
   nativeBuildInputs = [ makeWrapper ];
-  buildInputs = [ pkg-config SDL2 glew xcftools python pillow vasm ];
+  buildInputs = [ pkg-config SDL2 glew xcftools python2Packages.python python2Packages.pillow vasm ];
   preBuild = ''
     patchShebangs img2tiles.py
   '';

pkgs/top-level/all-packages.nix

···
   birdfont = callPackage ../tools/misc/birdfont { };
   xmlbird = callPackage ../tools/misc/birdfont/xmlbird.nix { stdenv = gccStdenv; };
 
-  blastem = callPackage ../misc/emulators/blastem {
-    inherit (python27Packages) pillow;
-  };
+  blastem = callPackage ../misc/emulators/blastem { };
 
   blueberry = callPackage ../tools/bluetooth/blueberry { };