with import ./config.nix;
{
  metrics =
    (mkDerivation {
      name = "my-build-product";
      builder = "/bin/sh";
      outputs = [
        "out"
        "bin"
      ];
      args = [
        (builtins.toFile "builder.sh" ''
          #! /bin/sh

          echo "$PATH"

          mkdir $bin
          echo "foo" > $bin/bar

          metrics=$out/nix-support/hydra-metrics
          mkdir -p "$(dirname "$metrics")"
          echo "lineCoverage 18 %" >> "$metrics"
          echo "maxResident 27 KiB" >> "$metrics"
        '')
      ];
    })
    // {
      meta = {
        license = "GPL";
        description = "An example meta property.";
        homepage = "https://github.com/NixOS/hydra";
      };
    };
}
