wasmtime: run tests depending on the platform features

  cargoHash = "sha256-A2JhjRFKPltHubiJYHBXj2H4cdU43Y2x6UjEpRGPX7U=";

  cargoBuildFlags = [

    "--package wasmtime-cli"

    "--package wasmtime-c-api"

  ];

  cargoBuildFlags = [ "--package" "wasmtime-cli" "--package" "wasmtime-c-api" ];

  outputs = [ "out" "dev" ];

  # We disable tests on x86_64-darwin because Hydra runners do not

  # support SSE3, SSSE3, SSE4.1 and SSE4.2 at this time. This is

  # required by wasmtime. Given this is very specific to Hydra

  # runners, just disable tests on this platform, so we don't get

  # false positives of this package being broken due to failed runs on

  # Hydra (e.g. https://hydra.nixos.org/build/187667794/)

  doCheck = (stdenv.system != "x86_64-darwin");

  cargoTestFlags = [

    "--package wasmtime-runtime"

  ];

  # SIMD tests are only executed on platforms that support all

  # required processor features (e.g. SSE3, SSSE3, SSE4.1 and SSE4.2 on x86_64):

  # https://github.com/bytecodealliance/wasmtime/blob/207cd1ce15ecc504dafaec490c5eae801cac4691/cranelift/codegen/src/isa/x64/mod.rs#L228

  doCheck = with stdenv.buildPlatform; (isx86_64 -> sse3Support && ssse3Support && sse4_1Support && sse4_2Support);

  cargoTestFlags = ["--package" "wasmtime-runtime"];

  postInstall = ''

    # move libs from out to dev

  '';

  meta = with lib; {

    description = "Standalone JIT-style runtime for WebAssembly, using Cranelift";

    description =

      "Standalone JIT-style runtime for WebAssembly, using Cranelift";

    homepage = "https://github.com/bytecodealliance/wasmtime";

    license = licenses.asl20;

    maintainers = with maintainers; [ ereslibre matthewbauer ];