these 21 derivations will be built:
  /nix/store/qy4xhsx1dqnz1wirl14zxbbrgh6038lf-chain-1-root.drv
  /nix/store/zn34ilvm5ijrwc7dr1yihbnbpqfyzzg4-chain-1-link-1.drv
  /nix/store/5pa7hnfzjmln02dw3xlnxrhlx9nyqkci-chain-1-link-2.drv
  /nix/store/jxdsknhbwmqyg63yl8bimrx3i3v90jmj-chain-1-link-3.drv
  /nix/store/vvvr6x40kq239xdcl4q9vih5iq3022zp-chain-1-link-4.drv
  /nix/store/vi3yhpajx2r7g876sg3mj8gvcfhmx56g-chain-1-link-5.drv
  /nix/store/l989vn9bhmq3yvgrrs1a89fwhg34bv8d-chain-1-link-6.drv
  /nix/store/pjva0zvcmf9bmhpfip8amylg0l0fxbwd-chain-1-link-7.drv
  /nix/store/9dv0ir4zc7y6ddv1qy7lm0114348xf5y-chain-1-link-8.drv
  /nix/store/mq6k74brz1vp6pjak25fwfaqwvfijn7r-chain-1-link-9.drv
  /nix/store/1lfwkz5c10w1fgxj8kvrw3bjfyv5swj5-chain-1-link-10.drv
  /nix/store/zb1xvb6qhpbpyzgwsf0rnv4dy2c9qcf3-chain-1-link-11.drv
  /nix/store/m4x935hznn8rg9j0446am71p4xlybbj6-chain-1-link-12.drv
  /nix/store/crhp7ib8wbsq82gfnnc91121zc19lxk8-chain-1-link-13.drv
  /nix/store/jivfbbzhl9i3wkshac06cyvm4lij8r2x-chain-1-link-14.drv
  /nix/store/409a8c4zxbsls7vgdw1b3li70kkh7sq6-chain-1-link-15.drv
  /nix/store/jrk1k3y4qi04zjggrhzm01ny5gx7p7al-chain-1-link-16.drv
  /nix/store/shgm4d0dh2g97sph1gzdm7ywgpmbdlsl-chain-1-link-17.drv
  /nix/store/lv3ivw8f3dbvilwb9blv31c31gyc18bx-chain-1-link-18.drv
  /nix/store/i58a9iqcdr3swwqw08pafglmglbhdynj-chain-1-link-19.drv
  /nix/store/fg1cqjc2p5dz9xa17phaigjzcrvfsb0a-chain-1-link-20.drv