mac02: building mazhhrjsq85jdapa0y8g9ipl7sd4mhx0-source.drv
structuredAttrs is enabled

trying https://github.com/yvgude/lean-ctx/archive/refs/tags/v3.12.4.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
100  7.59M   0  7.59M   0      0  6.03M      0           00:01          7.59M
100 15.59M   0 15.59M   0      0  6.90M      0           00:02          7.79M
100 15.97M   0 15.97M   0      0  6.97M      0           00:02          7.79M
100 15.97M   0 15.97M   0      0  6.97M      0           00:02          7.79M
100 15.97M   0 15.97M   0      0  6.96M      0           00:02          7.79M
unpacking source archive /nix/var/nix/builds/nix-55998-2476832797/download.tar.gz