nix/tests/functional/export-graph.nix

with import "${builtins.getEnv "_NIX_TEST_BUILD_DIR"}/config.nix";

rec {

  printRefs =
    ''
      echo $exportReferencesGraph
      while read path; do
          read drv
          read nrRefs
          echo "$path has $nrRefs references"
          echo "$path" >> $out
          for ((n = 0; n < $nrRefs; n++)); do read ref; echo "ref $ref"; test -e "$ref"; done
      done < refs
    '';

  foo."bar.runtimeGraph" = mkDerivation {
    name = "dependencies";
    builder = builtins.toFile "build-graph-builder" "${printRefs}";
    exportReferencesGraph = ["refs" (import ./dependencies.nix {})];
  };

  foo."bar.buildGraph" = mkDerivation {
    name = "dependencies";
    builder = builtins.toFile "build-graph-builder" "${printRefs}";
    exportReferencesGraph = ["refs" (import ./dependencies.nix {}).drvPath];
  };

}