libselinux needs native python to compute the installation prefix.
Swig generates the c code for the extension and needs python.h at compile,
so we put python into buildInputs
Avoid this warning (which is in turn an error via -Werror):
````
avc_internal.c: In function 'avc_netlink_receive':
avc_internal.c:105:25: error: cast increases required alignment of target type [-Werror=cast-align]
struct nlmsghdr *nlh = (struct nlmsghdr *)buf;
^
````
The code allocates abuffer with "__attribute__ ((aligned))",
then passes it via a 'char*' parameter, which is then finally cast,
causing the warning. So the code is ok but compiler is not smart
enough to see it.
It seems that -Wcast-align is a no-op on x86, so this shows up on ARM
only.
The reason this is optional is because we might want to use it for bootstrapping
in some constellations. And we really don't want whole lot of dependencies in
those situations.
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
URLs to http://nix.cs.uu.nl/dist/tarballs. With content-addressable
mirror support (r9190, NIXPKGS-70) this is no longer necessary:
fetchurl will try to download from that location automatically. So
we can keep the original URLs.
svn path=/nixpkgs/trunk/; revision=9192
