Fixing the evaluation of the system-tarball-pc. 
Fixing the evaluation of the system-tarball-pc. 

It complained that grub device wasn't defined, and I guess it wanted some
fileSystems too. I copied those details from the sheevaplug expression, that I
made evaluate some minutes ago.


svn path=/nixos/trunk/; revision=34238

triton/triton,SymbiFlow/nixpkgs,andreassalomonsson/nixos,SymbiFlow/nixpkgs,edolstra/nixos,NixOS/nixos,NixOS/nixpkgs,andreassalomonsson/nixos,SymbiFlow/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,triton/triton,edolstra/nixos,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,NixOS/nixos,NixOS/nixos,NixOS/nixpkgs,SymbiFlow/nixpkgs,NixOS/nixos,andreassalomonsson/nixos,triton/triton,SymbiFlow/nixpkgs,andreassalomonsson/nixos,triton/triton,edolstra/nixos,SymbiFlow/nixpkgs,andreassalomonsson/nixos,NixOS/nixpkgs,NixOS/nixpkgs,triton/triton,andreassalomonsson/nixos,SymbiFlow/nixpkgs,edolstra/nixos,triton/triton,SymbiFlow/nixpkgs,NixOS/nixos,NixOS/nixpkgs,NixOS/nixos,SymbiFlow/nixpkgs,triton/triton,NixOS/nixpkgs,SymbiFlow/nixpkgs,edolstra/nixos,SymbiFlow/nixpkgs,triton/triton,NixOS/nixpkgs,SymbiFlow/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs