{
  lib,
  stdenv,
  llvm_meta,
  release_version,
  cmake,
  zlib,
  ncurses,
  swig3,
  swig4,
  which,
  libedit,
  libxml2,
  libllvm,
  libclang,
  python3,
  version,
  darwin,
  lit,
  makeWrapper,
  lua5_3,
  ninja,
  runCommand,
  src ? null,
  monorepoSrc ? null,
  patches ? [ ],
  enableManpages ? false,
  ...
}:

let
  src' =
    if monorepoSrc != null then
      runCommand "lldb-src-${version}" { } ''
        mkdir -p "$out"
        cp -r ${monorepoSrc}/cmake "$out"
        cp -r ${monorepoSrc}/lldb "$out"
      ''
    else
      src;
  vscodeExt = {
    name = if lib.versionAtLeast release_version "18" then "lldb-dap" else "lldb-vscode";
    version = if lib.versionAtLeast release_version "18" then "0.2.0" else "0.1.0";
  };
  swig = if lib.versionAtLeast release_version "18" then swig4 else swig3;
in

stdenv.mkDerivation (
  rec {
    passthru.monorepoSrc = monorepoSrc;
    pname = "lldb";
    inherit version;

    src = src';
    inherit patches;

    outputs = [
      "out"
      "lib"
      "dev"
    ];

    sourceRoot = lib.optional (lib.versionAtLeast release_version "13") "${src.name}/${pname}";

    nativeBuildInputs =
      [
        cmake
        python3
        which
        swig
        lit
        makeWrapper
        lua5_3
      ]
      ++ lib.optionals enableManpages [ python3.pkgs.sphinx ]
      ++ lib.optionals (lib.versionOlder release_version "18" && enableManpages) [
        python3.pkgs.recommonmark
      ]
      ++ lib.optionals (lib.versionAtLeast release_version "18" && enableManpages) [
        python3.pkgs.myst-parser
      ]
      ++ lib.optionals (lib.versionAtLeast release_version "14") [ ninja ];

    buildInputs =
      [
        ncurses
        zlib
        libedit
        libxml2
        libllvm
      ]
      ++ lib.optionals (lib.versionAtLeast release_version "16") [
        # Starting with LLVM 16, the resource dir patch is no longer enough to get
        # libclang into the rpath of the lldb executables. By putting it into
        # buildInputs cc-wrapper will set up rpath correctly for us.
        (lib.getLib libclang)
      ]
      ++ lib.optionals stdenv.isDarwin [
        darwin.libobjc
        darwin.apple_sdk.libs.xpc
        darwin.apple_sdk.frameworks.Foundation
        darwin.bootstrap_cmds
        darwin.apple_sdk.frameworks.Carbon
        darwin.apple_sdk.frameworks.Cocoa
      ]
      # The older libSystem used on x86_64 macOS is missing the
      # `<bsm/audit_session.h>` header which `lldb` uses.
      #
      # We copy this header over from macOS 10.12 SDK.
      #
      # See here for context:
      # https://github.com/NixOS/nixpkgs/pull/194634#issuecomment-1272129132
      ++
        lib.optional
          (
            stdenv.targetPlatform.isDarwin
            && !stdenv.targetPlatform.isAarch64
            && (lib.versionAtLeast release_version "15")
          )
          (
            runCommand "bsm-audit-session-header" { } ''
              install -Dm444 \
                "${lib.getDev darwin.apple_sdk.sdk}/include/bsm/audit_session.h" \
                "$out/include/bsm/audit_session.h"
            ''
          );

    hardeningDisable = [ "format" ];

    cmakeFlags =
      [
        "-DLLDB_INCLUDE_TESTS=${if doCheck then "YES" else "NO"}"
        "-DLLVM_ENABLE_RTTI=OFF"
        "-DClang_DIR=${lib.getDev libclang}/lib/cmake"
        "-DLLVM_EXTERNAL_LIT=${lit}/bin/lit"
      ]
      ++ lib.optionals stdenv.isDarwin [ "-DLLDB_USE_SYSTEM_DEBUGSERVER=ON" ]
      ++ lib.optionals (!stdenv.isDarwin) [
        "-DLLDB_CODESIGN_IDENTITY=" # codesigning makes nondeterministic
      ]
      ++ lib.optionals (lib.versionAtLeast release_version "17") [
        "-DCLANG_RESOURCE_DIR=../../../../${libclang.lib}"
      ]
      ++ lib.optionals enableManpages (
        [
          "-DLLVM_ENABLE_SPHINX=ON"
          "-DSPHINX_OUTPUT_MAN=ON"
          "-DSPHINX_OUTPUT_HTML=OFF"
        ]
        ++ lib.optionals (lib.versionAtLeast release_version "15") [
          # docs reference `automodapi` but it's not added to the extensions list when
          # only building the manpages:
          # https://github.com/llvm/llvm-project/blob/af6ec9200b09039573d85e349496c4f5b17c3d7f/lldb/docs/conf.py#L54
          #
          # so, we just ignore the resulting errors
          "-DSPHINX_WARNINGS_AS_ERRORS=OFF"
        ]
      )
      ++ lib.optionals doCheck [
        "-DLLDB_TEST_C_COMPILER=${stdenv.cc}/bin/${stdenv.cc.targetPrefix}cc"
        "-DLLDB_TEST_CXX_COMPILER=${stdenv.cc}/bin/${stdenv.cc.targetPrefix}c++"
      ];

    doCheck = false;
    doInstallCheck = lib.versionOlder release_version "15";

    # TODO: cleanup with mass-rebuild
    installCheckPhase =
      ''
        if [ ! -e $lib/${python3.sitePackages}/lldb/_lldb*.so ] ; then
            echo "ERROR: python files not installed where expected!";
            return 1;
        fi
      '' # Something lua is built on older versions but this file doesn't exist.
      + lib.optionalString (lib.versionAtLeast release_version "14") ''
        if [ ! -e "$lib/lib/lua/${lua5_3.luaversion}/lldb.so" ] ; then
            echo "ERROR: lua files not installed where expected!";
            return 1;
        fi
      '';

    postInstall = ''
      wrapProgram $out/bin/lldb --prefix PYTHONPATH : $lib/${python3.sitePackages}/

      # Editor support
      # vscode:
      install -D ../tools/${vscodeExt.name}/package.json $out/share/vscode/extensions/llvm-org.${vscodeExt.name}-${vscodeExt.version}/package.json
      mkdir -p $out/share/vscode/extensions/llvm-org.${vscodeExt.name}-${vscodeExt.version}/bin
      ln -s $out/bin/*${
        if lib.versionAtLeast release_version "18" then vscodeExt.name else "-vscode"
      } $out/share/vscode/extensions/llvm-org.${vscodeExt.name}-${vscodeExt.version}/bin
    '';

    passthru.vscodeExtName = vscodeExt.name;
    passthru.vscodeExtPublisher = "llvm";
    passthru.vscodeExtUniqueId = "llvm-org.${vscodeExt.name}-${vscodeExt.version}";

    meta = llvm_meta // {
      homepage = "https://lldb.llvm.org/";
      description = "A next-generation high-performance debugger";
      longDescription = ''
        LLDB is a next generation, high-performance debugger. It is built as a set
        of reusable components which highly leverage existing libraries in the
        larger LLVM Project, such as the Clang expression parser and LLVM
        disassembler.
      '';
      # llvm <10 never built on aarch64-darwin since first introduction in nixpkgs
      broken =
        (lib.versionOlder release_version "11" && stdenv.isDarwin && stdenv.isAarch64)
        || (((lib.versions.major release_version) == "13") && stdenv.isDarwin);
      mainProgram = "lldb";
    };
  }
  // lib.optionalAttrs enableManpages {
    pname = "lldb-manpages";

    buildPhase = lib.optionalString (lib.versionOlder release_version "15") ''
      make ${if (lib.versionOlder release_version "12") then "docs-man" else "docs-lldb-man"}
    '';

    ninjaFlags = lib.optionals (lib.versionAtLeast release_version "15") [ "docs-lldb-man" ];

    propagatedBuildInputs = [ ];

    # manually install lldb man page
    installPhase = ''
      mkdir -p $out/share/man/man1
      install docs/man/lldb.1 -t $out/share/man/man1/
    '';

    postPatch = null;
    postInstall = null;

    outputs = [ "out" ];

    doCheck = false;

    meta = llvm_meta // {
      description = "man pages for LLDB ${version}";
    };
  }
)