these 21 derivations will be built:
  /nix/store/pqa4df02zgrk06s2ig5am1vcz3an87z9-chain-1-root.drv
  /nix/store/40n91f56blmaz3780sa1ihx0yi0w4gwd-chain-1-link-1.drv
  /nix/store/iy7ck90nfivdp2cjbsmp7ig9yn293mls-chain-1-link-2.drv
  /nix/store/1v8h4mfdgwza9vp89vg2hiahdhamysb4-chain-1-link-3.drv
  /nix/store/akxxn42pp6wkkxb67kk68j0q6kymkmbk-chain-1-link-4.drv
  /nix/store/lipj3yfy2852819h3qqmdaqbl7rfxhhg-chain-1-link-5.drv
  /nix/store/y2r6hginagqn3wlafawn9xmibrnqs23h-chain-1-link-6.drv
  /nix/store/n6hk18yk15gwi9l0pf3x0m6p7c5cg7dz-chain-1-link-7.drv
  /nix/store/8cmzsld3ghcxq0643v24pvz8fj2ar85c-chain-1-link-8.drv
  /nix/store/r0nx6bbjg6w9h5jc8jgcxx51ydj9pb4a-chain-1-link-9.drv
  /nix/store/82h7prmc5y5d16fxn958nk64bjihf7hg-chain-1-link-10.drv
  /nix/store/npqkqaig0mbganlxjgkynxj68z1ms3hh-chain-1-link-11.drv
  /nix/store/rcm8d2xwf90k54mw9qpspbd3gsl7lckz-chain-1-link-12.drv
  /nix/store/3m31yy99pj8s6rpkg6lijw6j8b55lgwl-chain-1-link-13.drv
  /nix/store/0dfba0yjviy76carv5dgb7c5i712y3qa-chain-1-link-14.drv
  /nix/store/5975zg7k7ykbaz1cmfx9b8y21ccsnq8b-chain-1-link-15.drv
  /nix/store/k0h3l90glrwr6lri6z9dsqsdbw1k3a8b-chain-1-link-16.drv
  /nix/store/n1fz8zv0jqqw0ih7jy8xjmwh6gyp8vc0-chain-1-link-17.drv
  /nix/store/iim4lxn8zf24lpbxm2c44vndc3z6pwzb-chain-1-link-18.drv
  /nix/store/gxfgbys6z2yp8g7qzrz1chp09j1ni5py-chain-1-link-19.drv
  /nix/store/cjcnia9x04i68hzn9v2p4xh8d3m1f63g-chain-1-link-20.drv