these 3 derivations will be built:
  /nix/store/2pyrzx1py74fqj2hyji9g819208q46z8-rendered.drv
  /nix/store/34384yrz0dzvywri5ngxziyr4h8f6hy3-generated-docs.drv
  /nix/store/kpnrvx9cy7zlg75y48rm75g5lg2f2cdg-nix-shell.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy