these 9 derivations will be built:
  /nix/store/0dg7cl1q4yhb0hmlq31xm7vxs238vwlm-spaces-probe-notifying-timed.drv
  /nix/store/59yly5yp917him2vzl75bvkc6wa8brsy-spaces-probe-reason.drv
  /nix/store/5ds24zwknxac9skrijm7l7sqq7a7h8ph-spaces-probe-notifying.drv
  /nix/store/7diigv5x4d3c3ws2sc6n52j99qxi4295-notify-send.drv
  /nix/store/8f4vsvsc0c98vcjdhhpwdxjwiq1wzc2j-spaces-probe-notifying-fail.drv
  /nix/store/d9axaqmhhb5nvsdxcmsjak4k5rv1s1rm-spaces-probe-ok.drv
  /nix/store/j5z9apgsilrhv5x41jczxww3cikj7510-spaces-probe-failing.drv
  /nix/store/wlgl4hggpn6zzrcg7gl6146iryijw4g3-spaces-probe-reason-ok.drv
  /nix/store/j2v6ccpy7bn65n40adjq5037rrviklhi-spaces-command-wrapper-test.drv