these 21 derivations will be built:
  /nix/store/cz31rl0zpil5idy52vnb021j39w0rir9-chain-1-root.drv
  /nix/store/w69fklzk3pzm1mkh4rkrnjy74kncc35p-chain-1-link-1.drv
  /nix/store/csfrp29gyq6k6dm4hlrrl93wca5fjl74-chain-1-link-2.drv
  /nix/store/a4v14gz2m89nskg3y0jqgbpmb9pc1awa-chain-1-link-3.drv
  /nix/store/6zgjdxwd0rw6qc1qyr7lg8k951x0qanm-chain-1-link-4.drv
  /nix/store/4qbqxgj722khk4jc68nf2bp2hnr099p2-chain-1-link-5.drv
  /nix/store/3zdgrijknv1ykmh89d2mm9as3p5z1fw7-chain-1-link-6.drv
  /nix/store/n1703yg2fz218kw2i07xbgx37xbqy2np-chain-1-link-7.drv
  /nix/store/byi681c4qalcbrwa4lz31daz3raj0k39-chain-1-link-8.drv
  /nix/store/j9pa61s3359vl6yw7mnr5nisg61d6d91-chain-1-link-9.drv
  /nix/store/sch31cmq33z910swxffm2cdpwnv3idj3-chain-1-link-10.drv
  /nix/store/12i2b4b218jhajib8hl7fk4sy0wzpmki-chain-1-link-11.drv
  /nix/store/w63vb92k99c5zxh7cm272g0vrz26sfz4-chain-1-link-12.drv
  /nix/store/0m53wjzzybq1k252fbin3fz915av59sd-chain-1-link-13.drv
  /nix/store/gc51l3fh2x0br8ghzbjsw51ajag2fd2j-chain-1-link-14.drv
  /nix/store/08qyllx038q56cl7y3ll1mss0x143nd1-chain-1-link-15.drv
  /nix/store/lgw2vjcsbjp8qgzjy87yjdjrlplgsa88-chain-1-link-16.drv
  /nix/store/l1wmlzx6asrdqylmv2cfir58jl0iqihw-chain-1-link-17.drv
  /nix/store/8niv0w9ljyrfcalbmpdxman47dnmb75v-chain-1-link-18.drv
  /nix/store/gpkq5b9jg9m75ihfqa00bmh97f17dp12-chain-1-link-19.drv
  /nix/store/vfaairdpf2rd744jalfhsdap46k5ab5n-chain-1-link-20.drv