these 3 derivations will be built:
  /nix/store/yb9bia90h243b905hhvlshs88qrk5i3r-dsh-source.drv
  /nix/store/6ghw0l5bw2vgxm5a5yhdasld7yf642z3-dsh-0.2.1-rc.4.drv
  /nix/store/xipjxgf2v541k64zcqyhl1xs0iamapl9-check-dsh.drv