anchor.diff:    # Darwin
   , gmp
   , libiconv
  +, qemu
   , Carbon
   , AppKit
   
  
positive.code:   '' + optionalString isDarwin ''
      sed -i '/qemucapabilitiestest/d' tests/meson.build
      sed -i '/vircryptotest/d' tests/meson.build
    '' + optionalString (isDarwin && isx86_64) ''
      sed -i '/qemucaps2xmltest/d' tests/meson.build
      sed -i '/qemuhotplugtest/d' tests/meson.build
  
negative.code:       (cfg "runstatedir" "/run")
  
        (cfg "init_script" (if isDarwin then "none" else "systemd"))
        (cfg "qemu_datadir" (if isDarwin then "${qemu}/share/qemu" else ""))
  
        (feat "apparmor" isLinux)
        (feat "attr" isLinux)
  