structuredAttrs is enabled

trying https://github.com/mathpn/hoarder-miniflux-webhook/archive/7c81f23f45409de80de84e5a2b2afa6fbaf0bec0.tar.gz
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed

  0      0   0      0   0      0      0      0                              0
  0      0   0      0   0      0      0      0                              0
  0      0   0      0   0      0      0      0                              0

  0      0   0      0   0      0      0      0                              0
  0      0   0      0   0      0      0      0                              0
  0      0   0      0   0      0      0      0                              0

  0      0   0      0   0      0      0      0                              0
100  18569   0  18569   0      0  24381      0                              0
100  18569   0  18569   0      0  24373      0                              0
100  18569   0  18569   0      0  24368      0                              0
unpacking source archive /nix/var/nix/builds/nix-15643-489724890/download.tar.gz