nixpkgs/pkgs/tools/virtualization/multipass/default.nix

{
  cmake,
  dnsmasq,
  fetchFromGitHub,
  git,
  gtest,
  iproute2,
  iptables,
  lib,
  libapparmor,
  libvirt,
  libxml2,
  nixosTests,
  openssl,
  OVMF,
  pkg-config,
  qemu,
  poco,
  protobuf,
  qemu-utils,
  qtbase,
  qtwayland,
  wrapQtAppsHook,
  slang,
  stdenv,
  xterm,
}:

let
  pname = "multipass";
  version = "1.14.1";

  # This is done here because a CMakeLists.txt from one of it's submodules tries
  # to modify a file, so we grab the source for the submodule here, copy it into
  # the source of the Multipass project which allows the modification to happen.
  grpc_src = fetchFromGitHub {
    owner = "CanonicalLtd";
    repo = "grpc";
    rev = "e3acf245";
    hash = "sha256-tDc2iGxIV68Yi4RL8ES4yglJNlu8yH6FlpVvZoWjoXk=";
    fetchSubmodules = true;
  };
in
stdenv.mkDerivation {
  inherit pname version;

  src = fetchFromGitHub {
    owner = "canonical";
    repo = "multipass";
    rev = "refs/tags/v${version}";
    hash = "sha256-i6SKiV4jwiBURx85m3u7km1dhi+fRdVpMBanlZo0VK4=";
    fetchSubmodules = true;
    leaveDotGit = true;
    postFetch = ''
      # Workaround for https://github.com/NixOS/nixpkgs/issues/8567
      cd $out
      rm -rf .git
    '';
  };

  patches = [
    # Multipass is usually only delivered as a snap package on Linux, and it expects that
    # the LXD backend will also be delivered via a snap - in which cases the LXD socket
    # is available at '/var/snap/lxd/...'. Here we patch to ensure that Multipass uses the
    # LXD socket location on NixOS in '/var/lib/...'
    ./lxd_socket_path.patch
    # The upstream cmake file attempts to fetch googletest using FetchContent, which fails
    # in the Nix build environment. This patch disables the fetch in favour of providing
    # the googletest library from nixpkgs.
    ./cmake_no_fetch.patch
    # Ensures '-Wno-ignored-attributes' is supported by the compiler before attempting to build.
    ./cmake_warning.patch
    # As of Multipass 1.14.0, the upstream started using vcpkg for grabbing C++ dependencies,
    # which doesn't work in the nix build environment. This patch reverts that change, in favour
    # of providing those dependencies manually in this derivation.
    ./vcpkg_no_install.patch
    # The compiler flags used in nixpkgs surface an error in the test suite where an
    # unreachable path was not annotated as such - this patch adds the annotation to ensure
    # that the test suite passes in the nix build process.
    ./test_unreachable_call.patch
  ];

  postPatch = ''
    # Make sure the version is reported correctly in the compiled binary.
    substituteInPlace ./CMakeLists.txt \
      --replace-fail "determine_version(MULTIPASS_VERSION)" "" \
      --replace-fail 'set(MULTIPASS_VERSION ''${MULTIPASS_VERSION})' 'set(MULTIPASS_VERSION "v${version}")'

    # Don't build/use vcpkg
    rm -rf 3rd-party/vcpkg

    # Patch the patch of the OVMF binaries to use paths from the nix store.
    substituteInPlace ./src/platform/backends/qemu/linux/qemu_platform_detail_linux.cpp \
      --replace-fail "OVMF.fd" "${OVMF.fd}/FV/OVMF.fd" \
      --replace-fail "QEMU_EFI.fd" "${OVMF.fd}/FV/QEMU_EFI.fd"

    # Copy the grpc submodule we fetched into the source code.
    cp -r --no-preserve=mode ${grpc_src} 3rd-party/grpc

    # Configure CMake to use gtest from the nix store since we disabled fetching from the internet.
    cat >> tests/CMakeLists.txt <<'EOF'
      add_library(gtest INTERFACE)
      target_include_directories(gtest INTERFACE ${gtest.dev}/include)
      target_link_libraries(gtest INTERFACE ${gtest}/lib/libgtest.so ''${CMAKE_THREAD_LIBS_INIT})
      add_dependencies(gtest GMock)

      add_library(gtest_main INTERFACE)
      target_include_directories(gtest_main INTERFACE ${gtest.dev}/include)
      target_link_libraries(gtest_main INTERFACE ${gtest}/lib/libgtest_main.so gtest)

      add_library(gmock INTERFACE)
      target_include_directories(gmock INTERFACE ${gtest.dev}/include)
      target_link_libraries(gmock INTERFACE ${gtest}/lib/libgmock.so gtest)

      add_library(gmock_main INTERFACE)
      target_include_directories(gmock_main INTERFACE ${gtest.dev}/include)
      target_link_libraries(gmock_main INTERFACE ${gtest}/lib/libgmock_main.so gmock gtest_main)
    EOF
  '';

  # We'll build the flutter application seperately using buildFlutterApplication
  cmakeFlags = [ "-DMULTIPASS_ENABLE_FLUTTER_GUI=false" ];

  buildInputs = [
    gtest
    libapparmor
    libvirt
    libxml2
    openssl
    qtbase
    qtwayland
    poco.dev
    protobuf
  ];

  nativeBuildInputs = [
    cmake
    git
    pkg-config
    slang
    wrapQtAppsHook
  ];

  nativeCheckInputs = [ gtest ];

  postInstall = ''
    wrapProgram $out/bin/multipassd --prefix PATH : ${
      lib.makeBinPath [
        dnsmasq
        iproute2
        iptables
        OVMF.fd
        qemu
        qemu-utils
        xterm
      ]
    }
  '';

  passthru.tests = {
    multipass = nixosTests.multipass;
  };

  meta = with lib; {
    description = "Ubuntu VMs on demand for any workstation";
    homepage = "https://multipass.run";
    license = licenses.gpl3Plus;
    maintainers = with maintainers; [ jnsgruk ];
    platforms = [ "x86_64-linux" ];
  };
}