these 4 derivations will be built:
  /nix/store/6hsss4yzg4hrmv74cqhl00g2sajav8p4-mac-4.11.4.5.7-gcc6.patch.drv
  /nix/store/7zvq61cpj4cy9017qaxx9cjs02i69bbc-mac-4.11.4.5.7-output.patch.drv
  /nix/store/a7wxj8jiczp9c9kmdfb1gighqbzkwdwz-monkeys-audio_4.11-u4-b5-s7.orig.tar.gz.drv
  /nix/store/saal565g6dzhbh074mrwvalzb707vgh5-mac-4.11-u4-b5-s7.drv
this path will be fetched (534.0 KiB download, 3.9 MiB unpacked):
  /nix/store/kpz50ff4bgjzl77f05hn6kr20iak9j0w-yasm-1.3.0
building '/nix/store/m281n7dlvymq3mzfnzqv2acby2amag6p-mac-4.11.4.5.7-gcc6.patch.drv'
building '/nix/store/cp816zfxjsdwqifs4r1irnwkacr0s0ji-monkeys-audio_4.11-u4-b5-s7.orig.tar.gz.drv'
mac-4.11.4.5.7-gcc6.patch> 
mac-4.11.4.5.7-gcc6.patch> trying https://gitweb.gentoo.org/repo/gentoo.git/plain/media-sound/mac/files/mac-4.11.4.5.7-gcc6.patch?id=1bd4e0e30e4d8a8862217d7067323851b34c7fe4
mac-4.11.4.5.7-gcc6.patch>   % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
mac-4.11.4.5.7-gcc6.patch>                                  Dload  Upload   Total   Spent    Left  Speed
monkeys-audio_4.11-u4-b5-s7.orig.tar.gz> 
monkeys-audio_4.11-u4-b5-s7.orig.tar.gz> trying https://www.deb-multimedia.org/pool/main/m/monkeys-audio/monkeys-audio_4.11-u4-b5-s7.orig.tar.gz
monkeys-audio_4.11-u4-b5-s7.orig.tar.gz>   % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
monkeys-audio_4.11-u4-b5-s7.orig.tar.gz>                                  Dload  Upload   Total   Spent    Left  Speed
building '/nix/store/dsk861h4ymysgmf8j803gnww93d6l82w-mac-4.11.4.5.7-output.patch.drv'
mac-4.11.4.5.7-output.patch> 
mac-4.11.4.5.7-output.patch> trying https://gitweb.gentoo.org/repo/gentoo.git/plain/media-sound/mac/files/mac-4.11.4.5.7-output.patch?id=1bd4e0e30e4d8a8862217d7067323851b34c7fe4
mac-4.11.4.5.7-output.patch>   % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
mac-4.11.4.5.7-output.patch>                                  Dload  Upload   Total   Spent    Left  Speed
mac-4.11.4.5.7-output.patch>   0  2582    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
mac-4.11.4.5.7-output.patch> curl: (22) The requested URL returned error: 502
mac-4.11.4.5.7-output.patch> Warning: Problem : HTTP error. Will retry in 1 seconds. 3 retries left.
mac-4.11.4.5.7-output.patch>   0  2582    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
mac-4.11.4.5.7-output.patch> curl: (22) The requested URL returned error: 502
mac-4.11.4.5.7-output.patch> Warning: Problem : HTTP error. Will retry in 2 seconds. 2 retries left.
mac-4.11.4.5.7-output.patch>   0  2582    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
mac-4.11.4.5.7-output.patch> curl: (22) The requested URL returned error: 502
mac-4.11.4.5.7-output.patch> Warning: Problem : HTTP error. Will retry in 4 seconds. 1 retries left.
mac-4.11.4.5.7-gcc6.patch> 100 10119  100 10119    0     0   1567      0  0:00:06  0:00:06 --:--:--  2553
mac-4.11.4.5.7-output.patch>   0  2582    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
mac-4.11.4.5.7-output.patch> curl: (22) The requested URL returned error: 502
mac-4.11.4.5.7-output.patch> error: cannot download mac-4.11.4.5.7-output.patch from any mirror
error: Cannot build '/nix/store/dsk861h4ymysgmf8j803gnww93d6l82w-mac-4.11.4.5.7-output.patch.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/fpyrd8xr0yqgmg806nqpy9hz3mvjsmh8-mac-4.11.4.5.7-output.patch
       Last 16 log lines:
       >
       > trying https://gitweb.gentoo.org/repo/gentoo.git/plain/media-sound/mac/files/mac-4.11.4.5.7-output.patch?id=1bd4e0e30e4d8a8862217d7067323851b34c7fe4
       >   % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
       >                                  Dload  Upload   Total   Spent    Left  Speed
       >   0  2582    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
       > curl: (22) The requested URL returned error: 502
       > Warning: Problem : HTTP error. Will retry in 1 seconds. 3 retries left.
       >   0  2582    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
       > curl: (22) The requested URL returned error: 502
       > Warning: Problem : HTTP error. Will retry in 2 seconds. 2 retries left.
       >   0  2582    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
       > curl: (22) The requested URL returned error: 502
       > Warning: Problem : HTTP error. Will retry in 4 seconds. 1 retries left.
       >   0  2582    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
       > curl: (22) The requested URL returned error: 502
       > error: cannot download mac-4.11.4.5.7-output.patch from any mirror
       For full logs, run:
         nix log /nix/store/dsk861h4ymysgmf8j803gnww93d6l82w-mac-4.11.4.5.7-output.patch.drv
error: build of resolved derivation '/nix/store/dsk861h4ymysgmf8j803gnww93d6l82w-mac-4.11.4.5.7-output.patch.drv' failed
monkeys-audio_4.11-u4-b5-s7.orig.tar.gz> 100  499k  100  499k    0     0  53940      0  0:00:09  0:00:09 --:--:-- 50655
error: Cannot build '/nix/store/saal565g6dzhbh074mrwvalzb707vgh5-mac-4.11-u4-b5-s7.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/i8l0gzqm0if19ik1p02yla7s5mihiba0-mac-4.11-u4-b5-s7