libevent: set platforms
ncdu: set platforms
clang: Pass the real gcc install prefix

Signed-off-by: Shea Levy <shea@shealevy.com>
cython: set platforms
Try to fix the tarball.

stdenv.gcc.gcc might be null, e.g. on ppc-linux

Signed-off-by: Shea Levy <shea@shealevy.com>
binutils_gold: Don't require unneded dependencies.

Based on my scan of the logs they weren't even used when enabled

Signed-off-by: Shea Levy <shea@shealevy.com>
Make some arguments passed to all-packages.nix available in the pkgs set

These are needed to re-call <nixpkgs/pkgs/stdenv> to, say, deeply override glibc

Signed-off-by: Shea Levy <shea@shealevy.com>
add dontBuild docs
autojump: bump and reogranize a bit, not functional yet