boost: Disable Python / Numpy support by default

We can't have a C++ library pulling in Numpy and its gazillion
dependencies by default.

pkgs/development/libraries/boost/generic.nix

@@ -9,8 +9,8 @@
 , enableMultiThreaded ? true
 , enableShared ? !(hostPlatform.libc == "msvcrt") # problems for now
 , enableStatic ? !enableShared
-, enablePython ? hostPlatform == buildPlatform
-, enableNumpy ? enablePython && stdenv.lib.versionAtLeast version "1.65"
+, enablePython ? false
+, enableNumpy ? false
 , taggedLayout ? ((enableRelease && enableDebug) || (enableSingleThreaded && enableMultiThreaded) || (enableShared && enableStatic))
 , patches ? []
 , mpi ? null