Hi, I see that there are lots of failures in recent Darwin builds, all saying: > Aborted: program ‘/nix/store/ny0pf6qlq28pjpncn79lr5a6w5i63fyc-nix-1.11.8/libexec/nix/resolve-system-dependencies.pl’ failed due to signal 11 (Segmentation fault: 11) It might be just the "mac2" machine, eating through all the builds quickly. --Vladimir