* Fix installing from the modular branch.  system/system.nix no longer   exists.  $NIXPKGS needs to be set, otherwise NixOS can't find   Nixpkgs (because in the chroot it's in /mnt/etc/nixos/nixpkgs).   Also clear LANG to shut up Perl warnings about the locale.
* Fix installing from the modular branch.  system/system.nix no longer
  exists.  $NIXPKGS needs to be set, otherwise NixOS can't find
  Nixpkgs (because in the chroot it's in /mnt/etc/nixos/nixpkgs).
  Also clear LANG to shut up Perl warnings about the locale.

svn path=/nixos/branches/modular-nixos/; revision=15978

SymbiFlow/nixpkgs,NixOS/nixos,NixOS/nixpkgs,triton/triton,NixOS/nixpkgs,NixOS/nixos,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,edolstra/nixos,NixOS/nixos,andreassalomonsson/nixos,SymbiFlow/nixpkgs,triton/triton,SymbiFlow/nixpkgs,SymbiFlow/nixpkgs,SymbiFlow/nixpkgs,triton/triton,triton/triton,NixOS/nixos,triton/triton,andreassalomonsson/nixos,NixOS/nixpkgs,SymbiFlow/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,rbvermaa/nixos-svn,triton/triton,NixOS/nixpkgs,rbvermaa/nixos-svn,NixOS/nixpkgs,rbvermaa/nixos-svn,SymbiFlow/nixpkgs,NixOS/nixpkgs,edolstra/nixos,SymbiFlow/nixpkgs,andreassalomonsson/nixos,edolstra/nixos,andreassalomonsson/nixos,NixOS/nixpkgs,triton/triton,rbvermaa/nixos-svn,andreassalomonsson/nixos,SymbiFlow/nixpkgs,edolstra/nixos,NixOS/nixpkgs,NixOS/nixpkgs,edolstra/nixos,NixOS/nixpkgs,NixOS/nixos,SymbiFlow/nixpkgs,NixOS/nixos,SymbiFlow/nixpkgs,triton/triton,andreassalomonsson/nixos