$ nix-instantiate hello.nix
/nix/store/z77vn965a59irqnrrjvbspiyl2rph0jp-hello.drv
$ nix-store -q --references /nix/store/z77vn965a59irqnrrjvbspiyl2rph0jp-hello.drv
/nix/store/0q6pfasdma4as22kyaknk4kwx4h58480-hello-2.9.tar.gz
/nix/store/1zcs1y4n27lqs0gw4v038i303pb89rw6-coreutils-8.21.drv
/nix/store/2h4b30hlfw4fhqx10wwi71mpim4wr877-gnused-4.2.2.drv
/nix/store/39bgdjissw9gyi4y5j9wanf4dbjpbl07-gnutar-1.27.1.drv
/nix/store/7qa70nay0if4x291rsjr7h9lfl6pl7b1-builder.sh
/nix/store/g6a0shr58qvx2vi6815acgp9lnfh9yy8-gnugrep-2.14.drv
/nix/store/jdggv3q1sb15140qdx0apvyrps41m4lr-bash-4.2-p45.drv
/nix/store/pglhiyp1zdbmax4cglkpz98nspfgbnwr-gnumake-3.82.drv
/nix/store/q9l257jn9lndbi3r9ksnvf4dr8cwxzk7-gawk-4.1.0.drv
/nix/store/rgyrqxz1ilv90r01zxl0sq5nq0cq7v3v-binutils-2.23.1.drv
/nix/store/qzxhby795niy6wlagfpbja27dgsz43xk-gcc-wrapper-4.8.3.drv
/nix/store/sk590g7fv53m3zp0ycnxsc41snc2kdhp-gzip-1.6.drv