these 3 derivations will be built:
  /nix/store/qi4kca18b1sp6agwnpy0rnmp2v3di63x-treefmt.toml.drv
  /nix/store/52db7lk6ya9vlcc6q16xgxh4vwkrpj1h-treefmt.drv
  /nix/store/m6d02byh8cwmap10w8ikkwma5ns74w08-treefmt-check.drv