mac02: building 43x2k50mskhjb0ppsrgnmvv2rl5vjcav-source.drv
structuredAttrs is enabled

trying https://github.com/yvgude/lean-ctx/archive/refs/tags/v3.12.1.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  7.44M   0  7.44M   0      0  5.84M      0           00:01          7.34M
100 14.37M   0 14.37M   0      0  6.79M      0           00:02          7.34M
100 14.37M   0 14.37M   0      0  6.79M      0           00:02          7.34M
100 14.37M   0 14.37M   0      0  6.79M      0           00:02          7.34M
unpacking source archive /nix/var/nix/builds/nix-31788-756167105/download.tar.gz