these 21 derivations will be built:
  /nix/store/3m5bmai8s1mih4a7yyq9s4lwgf8b9fn2-chain-1-root.drv
  /nix/store/1rwhy0i776ccmpkkav2clknsmg3wh35s-chain-1-link-1.drv
  /nix/store/lfhkq73q0rr0n870xmra61i7xsrl9wff-chain-1-link-2.drv
  /nix/store/gs1ki9nk7ba4bsz10gdzvggzff8rrwbz-chain-1-link-3.drv
  /nix/store/5j41sm98d11h30rjzw50s46rr7byh15y-chain-1-link-4.drv
  /nix/store/a736m319idcwnbx0f281jbp6wy4ql8k5-chain-1-link-5.drv
  /nix/store/zsvyz2lxv3mpwxnyyx8yjdz8xvmzj4kl-chain-1-link-6.drv
  /nix/store/cjg7azsc56njsg37w6ry9v3w2whh51b5-chain-1-link-7.drv
  /nix/store/1mi60kjl42cvdnrlghh884yphk4p0rjv-chain-1-link-8.drv
  /nix/store/2c048r5b4za7jln75rv2akfkbsinzvvq-chain-1-link-9.drv
  /nix/store/xidibgv7205i2jbnqlys6axipig9s1w1-chain-1-link-10.drv
  /nix/store/zc3yr89zwwhnc95qw3a1ky3slazic6si-chain-1-link-11.drv
  /nix/store/sdnvr5w1qifhswcxhl5yqqjp89fxizng-chain-1-link-12.drv
  /nix/store/k63vcn7qyl79v1cj5q80d9dw98pp2z6z-chain-1-link-13.drv
  /nix/store/d28mdyj33ijg5xcb8wg17xn1xbfrngwc-chain-1-link-14.drv
  /nix/store/4vp51fpa3gdqswxs78rn2cp4r6yhc6q5-chain-1-link-15.drv
  /nix/store/90g6cs72p9ik5fk8020v6ifqjkzcvj93-chain-1-link-16.drv
  /nix/store/vh4kqwdwrr0vfx0gh1wfq50axnxxkw7x-chain-1-link-17.drv
  /nix/store/zq484ay48xi9m3nvhif9czq9rilqfh6r-chain-1-link-18.drv
  /nix/store/jvdlrfjnh25mk8i7pk0dawv27l3cdv40-chain-1-link-19.drv
  /nix/store/k10n5kg6g8azvl5j7j4hzh59disf7q4h-chain-1-link-20.drv