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path: root/pkgs/development/python-modules/debugpy/default.nix
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{ lib
, stdenv
, buildPythonPackage
, pythonOlder
, fetchFromGitHub
, substituteAll
, gdb
, lldb
, pytestCheckHook
, pytest-xdist
, pytest-timeout
, importlib-metadata
, psutil
, django
, requests
, gevent
, numpy
, flask
}:

buildPythonPackage rec {
  pname = "debugpy";
  version = "1.8.1";
  format = "setuptools";

  disabled = pythonOlder "3.8";

  src = fetchFromGitHub {
    owner = "microsoft";
    repo = "debugpy";
    rev = "refs/tags/v${version}";
    hash = "sha256-2TkieSQYxnlUroSD9wNKNaHUTLRksFWL/6XmSNGTCA4=";
  };

  patches = [
    # Use nixpkgs version instead of versioneer
    (substituteAll {
      src = ./hardcode-version.patch;
      inherit version;
    })

    # Fix importing debugpy in:
    # - test_nodebug[module-launch(externalTerminal)]
    # - test_nodebug[module-launch(integratedTerminal)]
    #
    # NOTE: The import failures seen in these tests without the patch
    # will be seen if a user "installs" debugpy by adding it to PYTHONPATH.
    # To avoid this issue, debugpy should be installed using python.withPackages:
    # python.withPackages (ps: with ps; [ debugpy ])
    ./fix-test-pythonpath.patch

    # Attach pid tests are disabled by default on windows & macos,
    # but are also flaky on linux:
    # - https://github.com/NixOS/nixpkgs/issues/262000
    # - https://github.com/NixOS/nixpkgs/issues/251045
    ./skip-attach-pid-tests.patch
  ] ++ lib.optionals stdenv.isLinux [
    # Hard code GDB path (used to attach to process)
    (substituteAll {
      src = ./hardcode-gdb.patch;
      inherit gdb;
    })
  ] ++ lib.optionals stdenv.isDarwin [
    # Hard code LLDB path (used to attach to process)
    (substituteAll {
      src = ./hardcode-lldb.patch;
      inherit lldb;
    })
  ];

  # Remove pre-compiled "attach" libraries and recompile for host platform
  # Compile flags taken from linux_and_mac/compile_linux.sh & linux_and_mac/compile_mac.sh
  preBuild = ''(
    set -x
    cd src/debugpy/_vendored/pydevd/pydevd_attach_to_process
    rm *.so *.dylib *.dll *.exe *.pdb
    $CXX linux_and_mac/attach.cpp -Ilinux_and_mac -std=c++11 -fPIC -nostartfiles ${{
      "x86_64-linux"   = "-shared -o attach_linux_amd64.so";
      "i686-linux"     = "-shared -o attach_linux_x86.so";
      "aarch64-linux"  = "-shared -o attach_linux_arm64.so";
      "x86_64-darwin"  = "-D_REENTRANT -dynamiclib -lc -o attach_x86_64.dylib";
      "i686-darwin"    = "-D_REENTRANT -dynamiclib -lc -o attach_x86.dylib";
      "aarch64-darwin" = "-D_REENTRANT -dynamiclib -lc -o attach_arm64.dylib";
    }.${stdenv.hostPlatform.system} or (throw "Unsupported system: ${stdenv.hostPlatform.system}")}
  )'';

  nativeCheckInputs = [
    ## Used to run the tests:
    pytestCheckHook
    pytest-xdist
    pytest-timeout

    ## Used by test helpers:
    importlib-metadata
    psutil

    ## Used in Python code that is run/debugged by the tests:
    django
    flask
    gevent
    numpy
    requests
  ];

  preCheck = ''
    export DEBUGPY_PROCESS_SPAWN_TIMEOUT=0
    export DEBUGPY_PROCESS_EXIT_TIMEOUT=0
  '' + lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
    # https://github.com/python/cpython/issues/74570#issuecomment-1093748531
    export no_proxy='*';
  '';

  postCheck = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
    unset no_proxy
  '';

  # Override default arguments in pytest.ini
  pytestFlagsArray = [
    "--timeout=0"
  ];

  # Fixes hanging tests on Darwin
  __darwinAllowLocalNetworking = true;

  pythonImportsCheck = [
    "debugpy"
  ];

  meta = with lib; {
    description = "An implementation of the Debug Adapter Protocol for Python";
    homepage = "https://github.com/microsoft/debugpy";
    changelog = "https://github.com/microsoft/debugpy/releases/tag/v${version}";
    license = licenses.mit;
    maintainers = with maintainers; [ kira-bruneau ];
    platforms = [ "x86_64-linux" "i686-linux" "aarch64-linux" "x86_64-darwin" "i686-darwin" "aarch64-darwin" ];
  };
}