nixpkgs

  has to be "/bin/sh" - other values such as "sh" or "bash" or "$(type
  -tP sh)" cause a build error:

  LD      .tmp_vmlinux1
  /nix/store/1yv8i1m76cvwk5w5i5wrk4gj5zyfj6vh-binutils-2.19.1/bin/ld:arch/um/kernel/vmlinux.lds:1: ignoring invalid character `#' in expression
  /nix/store/1yv8i1m76cvwk5w5i5wrk4gj5zyfj6vh-binutils-2.19.1/bin/ld:arch/um/kernel/vmlinux.lds:1: syntax error
  collect2: ld returned 1 exit status

  This is caused by Bash 4.0
  (http://bugzilla.kernel.org/show_bug.cgi?id=13343).

svn path=/nixpkgs/branches/kernel-config/; revision=18941