these 2 derivations will be built:
  /nix/store/bzz28g3yp9crp4f9iy92cj7pl81lvjlc-epson-inkjet-printer-201106w-1.0.1-1lsb3.2.src.rpm.drv
  /nix/store/6zldr02a8svhc70xxw5a2lldmd95krwa-epson-201106w-1.0.1.drv
these 4 paths will be fetched (964.9 KiB download, 5.9 MiB unpacked):
  /nix/store/dw2g77r3xqixb569kag4pnvcsjh81vyx-cpio-2.13
  /nix/store/cjwlqshgv7798wmswad12v0lvpkxjfam-popt-1.19
  /nix/store/962zdfk75xmfxin5218wkaa5vwhxq5k5-rpm-4.18.0
  /nix/store/rx9svxdzsjmslly09lxj0akpi28dq495-rpmextract