circt: fix build failure on darwin (#354138)

    "-DCIRCT_LLHD_SIM_ENABLED=OFF"

  ];

  # cannot use lib.optionalString as it creates an empty string, disabling all tests

  LIT_FILTER_OUT =

    let

      lit-filters =

        # There are some tests depending on `clang-tools` to work. They are activated only when detected

        # `clang-tidy` in PATH, However, we cannot simply put `clang-tools` in checkInputs to make these

        # tests work. Because

        #    https://github.com/NixOS/nixpkgs/issues/214945 discusses this issue.

        #

        # As a temporary fix, we disabled these tests when using clang stdenv

  # cannot use lib.optionalString as it creates an empty string, disabling all tests

  LIT_FILTER_OUT = if stdenv.cc.isClang then "CIRCT :: Target/ExportSystemC/.*\.mlir" else null;

        lib.optionals stdenv.cc.isClang [ "CIRCT :: Target/ExportSystemC/.*\.mlir" ]

        # Disable some tests on x86_64-darwin

        ++ lib.optionals (stdenv.hostPlatform.system == "x86_64-darwin") [

          # These test seem to pass on hydra (rosetta) but not on x86_64-darwin machines

          "CIRCT :: Target/ExportSMTLIB/attributes.mlir"

          "CIRCT :: Target/ExportSMTLIB/basic.mlir"

          "CIRCT :: circt-bmc/comb-errors.mlir"

          "CIRCT :: circt-bmc/seq-errors.mlir"

          # This test was having issues with rosetta

          "CIRCT :: Dialect/SMT/basic.mlir"

        ];

    in

    if lit-filters != [ ] then lib.strings.concatStringsSep "|" lit-filters else null;

  preConfigure = ''

    find ./test -name '*.mlir' -exec sed -i 's|/usr/bin/env|${coreutils}/bin/env|g' {} \;

    # circt uses git to check its version, but when cloned on nix it can't access git.

    # So this hard codes the version.

    substituteInPlace cmake/modules/GenVersionFile.cmake --replace "unknown git version" "${src.rev}"

    substituteInPlace cmake/modules/GenVersionFile.cmake \

      --replace-fail "unknown git version" "${src.rev}"

    # Increase timeout on tests because some were failing on hydra.

    # Using `replace-warn` so it doesn't break when upstream changes the timeout.

    substituteInPlace integration_test/CMakeLists.txt \

      --replace-warn 'set(CIRCT_INTEGRATION_TIMEOUT 60)' 'set(CIRCT_INTEGRATION_TIMEOUT 300)'

  '';

  doCheck = true;