these 4 derivations will be built:
  /nix/store/9vrkzyfz50q6681rqg5hibn8i1vba180-source.drv
  /nix/store/pphnzk470k0dmrww6izk3r2whs0aj87q-ctx-1.4.12-vendor-staging.drv
  /nix/store/r56xzvyr64jd6grxfgli0r63xb4x8kr4-ctx-1.4.12-vendor.drv
  /nix/store/74w41k05xrr15laciz3l96m2ks52pm56-ctx-1.4.12.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy