these 5 derivations will be built:
  /nix/store/1wahijnqkzh827dw9965wdiic6riry5x-source.drv
  /nix/store/vn4fccdc2zk2cgfbs6dfqxk2s8fs4x7f-ctx-1.5.0-vendor-staging.drv
  /nix/store/n1zxazwa01x444hvkghrzgp91jy36aym-ctx-1.5.0-vendor.drv
  /nix/store/p8ndwrprzh4rah6p4jzx9y623yjwvp4f-ctx-1.5.0.drv
  /nix/store/ijpchvvz1srshsgsxb31bd8n1975jjp1-check-ctx.drv