Nix daemon:
at `debootstrap' [system = "i686-linux"]:
getting attributes of path `/nix/store/dmhydkv6y1l4wpz4wq8qkf0fnlrhjr3l-svn-export/pkgs/tools/misc/debootstrap/subst.patch': No such file or directory
at `debootstrap' [system = "x86_64-linux"]:
writing to file: Broken pipe
etc.
release.nix expression, accepting multiple values for function
arguments. This is much faster than calling nix-instantiate /
nix-env a zillion times (which is particularly important for
Nixpkgs).