ComfyUI-Manager/comfyui_manager/prestartup_script.py

import os
import shutil
import subprocess
import sys
import atexit
import threading
import re
import locale
import platform
import json
import ast
import logging
import traceback

from .common import security_check
from .common import manager_util
from .common import cm_global
from .common import manager_downloader
from .common.timestamp_utils import current_timestamp
import folder_paths

manager_util.add_python_path_to_env()


cm_global.pip_blacklist = {'torch', 'torchaudio', 'torchsde', 'torchvision'}
cm_global.pip_downgrade_blacklist = ['torch', 'torchaudio', 'torchsde', 'torchvision', 'transformers', 'safetensors', 'kornia']


def skip_pip_spam(x):
    return ('Requirement already satisfied:' in x) or ("DEPRECATION: Loading egg at" in x)


message_collapses = [skip_pip_spam]
import_failed_extensions = set()
cm_global.variables['cm.on_revision_detected_handler'] = []
enable_file_logging = True


def register_message_collapse(f):
    global message_collapses
    message_collapses.append(f)


def is_import_failed_extension(name):
    global import_failed_extensions
    return name in import_failed_extensions


comfy_path = os.environ.get('COMFYUI_PATH')
comfy_base_path = os.environ.get('COMFYUI_FOLDERS_BASE_PATH')

if comfy_path is None:
    comfy_path = os.path.abspath(os.path.dirname(sys.modules['__main__'].__file__))
    os.environ['COMFYUI_PATH'] = comfy_path

if comfy_base_path is None:
    comfy_base_path = comfy_path


sys.__comfyui_manager_register_message_collapse = register_message_collapse
sys.__comfyui_manager_is_import_failed_extension = is_import_failed_extension
cm_global.register_api('cm.register_message_collapse', register_message_collapse)
cm_global.register_api('cm.is_import_failed_extension', is_import_failed_extension)


comfyui_manager_path = os.path.abspath(os.path.dirname(__file__))

custom_nodes_base_path = folder_paths.get_folder_paths('custom_nodes')[0]
manager_files_path = folder_paths.get_system_user_directory("manager")
manager_pip_overrides_path = os.path.join(manager_files_path, "pip_overrides.json")
manager_pip_blacklist_path = os.path.join(manager_files_path, "pip_blacklist.list")
restore_snapshot_path = os.path.join(manager_files_path, "startup-scripts", "restore-snapshot.json")
manager_config_path = os.path.join(manager_files_path, 'config.ini')

default_conf = {}

def read_config():
    global default_conf
    try:
        import configparser
        config = configparser.ConfigParser(strict=False)
        config.read(manager_config_path)
        default_conf = config['default']
    except Exception:
        pass

def read_uv_mode():
    if 'use_uv' in default_conf:
        manager_util.use_uv = default_conf['use_uv'].lower() == 'true'


def read_unified_resolver_mode():
    if 'use_unified_resolver' in default_conf:
        manager_util.use_unified_resolver = default_conf['use_unified_resolver'].lower() == 'true'

def check_file_logging():
    global enable_file_logging
    if 'file_logging' in default_conf and default_conf['file_logging'].lower() == 'false':
        enable_file_logging = False


read_config()
read_uv_mode()
read_unified_resolver_mode()
security_check.security_check()
check_file_logging()

# Module-level flag set by startup batch resolver when it succeeds.
# Used by execute_lazy_install_script() to skip per-node pip installs.
_unified_resolver_succeeded = False

cm_global.pip_overrides = {}

if os.path.exists(manager_pip_overrides_path):
    with open(manager_pip_overrides_path, 'r', encoding="UTF-8", errors="ignore") as json_file:
        cm_global.pip_overrides = json.load(json_file)


if os.path.exists(manager_pip_blacklist_path):
    with open(manager_pip_blacklist_path, 'r', encoding="UTF-8", errors="ignore") as f:
        for x in f.readlines():
            y = x.strip()
            if y != '':
                cm_global.pip_blacklist.add(y)


def remap_pip_package(pkg):
    if pkg in cm_global.pip_overrides:
        res = cm_global.pip_overrides[pkg]
        print(f"[ComfyUI-Manager] '{pkg}' is remapped to '{res}'")
        return res
    else:
        return pkg


std_log_lock = threading.Lock()


def handle_stream(stream, prefix):
    stream.reconfigure(encoding=locale.getpreferredencoding(), errors='replace')
    for msg in stream:
        if prefix == '[!]' and ('it/s]' in msg or 's/it]' in msg) and ('%|' in msg or 'it [' in msg):
            if msg.startswith('100%'):
                print('\r' + msg, end="", file=sys.stderr),
            else:
                print('\r' + msg[:-1], end="", file=sys.stderr),
        else:
            if prefix == '[!]':
                print(prefix, msg, end="", file=sys.stderr)
            else:
                print(prefix, msg, end="")


def process_wrap(cmd_str, cwd_path, handler=None, env=None):
    process = subprocess.Popen(cmd_str, cwd=cwd_path, env=env, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True, bufsize=1)

    if handler is None:
        handler = handle_stream

    stdout_thread = threading.Thread(target=handler, args=(process.stdout, ""))
    stderr_thread = threading.Thread(target=handler, args=(process.stderr, "[!]"))

    stdout_thread.start()
    stderr_thread.start()

    stdout_thread.join()
    stderr_thread.join()

    return process.wait()


original_stdout = sys.stdout


def try_get_custom_nodes(x):
    for custom_nodes_dir in folder_paths.get_folder_paths('custom_nodes'):
        if x.startswith(custom_nodes_dir):
            relative_path = os.path.relpath(x, custom_nodes_dir)
            next_segment = relative_path.split(os.sep)[0]
            if next_segment.lower() != 'comfyui-manager':
                return next_segment, os.path.join(custom_nodes_dir, next_segment)
    return None


def extract_origin_module():
    stack = traceback.extract_stack()[:-2]
    for frame in reversed(stack):
        info = try_get_custom_nodes(frame.filename)
        if info is None:
            continue
        else:
            return info
    return None

def extract_origin_module_from_strings(file_paths):
    for filepath in file_paths:
        info = try_get_custom_nodes(filepath)
        if info is None:
            continue
        else:
            return info
    return None


def finalize_startup():
    res = {}
    for k, v in cm_global.error_dict.items():
        if v['path'] in import_failed_extensions:
            res[k] = v

    cm_global.error_dict = res


try:
    if '--port' in sys.argv:
        port_index = sys.argv.index('--port')
        if port_index + 1 < len(sys.argv):
            port = int(sys.argv[port_index + 1])
            postfix = f"_{port}"
        else:
            postfix = ""
    else:
        postfix = ""

    # Logger setup
    log_path_base = None
    if enable_file_logging:
        log_path_base = os.path.join(folder_paths.user_directory, 'comfyui')

        if not os.path.exists(folder_paths.user_directory):
            os.makedirs(folder_paths.user_directory)

        if os.path.exists(f"{log_path_base}{postfix}.log"):
            if os.path.exists(f"{log_path_base}{postfix}.prev.log"):
                if os.path.exists(f"{log_path_base}{postfix}.prev2.log"):
                    os.remove(f"{log_path_base}{postfix}.prev2.log")
                os.rename(f"{log_path_base}{postfix}.prev.log", f"{log_path_base}{postfix}.prev2.log")
            os.rename(f"{log_path_base}{postfix}.log", f"{log_path_base}{postfix}.prev.log")

        log_file = open(f"{log_path_base}{postfix}.log", "w", encoding="utf-8", errors="ignore")

    log_lock = threading.Lock()

    original_stdout = sys.stdout
    original_stderr = sys.stderr

    if original_stdout.encoding.lower() == 'utf-8':
        write_stdout = original_stdout.write
        write_stderr = original_stderr.write
    else:
        def wrapper_stdout(msg):
            original_stdout.write(msg.encode('utf-8').decode(original_stdout.encoding, errors="ignore"))
            
        def wrapper_stderr(msg):
            original_stderr.write(msg.encode('utf-8').decode(original_stderr.encoding, errors="ignore"))

        write_stdout = wrapper_stdout
        write_stderr = wrapper_stderr

    pat_tqdm = r'\d+%.*\[(.*?)\]'
    pat_import_fail = r'seconds \(IMPORT FAILED\):(.*)$'

    is_start_mode = True


    class ComfyUIManagerLogger:
        def __init__(self, is_stdout):
            self.is_stdout = is_stdout
            self.encoding = "utf-8"
            self.last_char = ''

        def fileno(self):
            try:
                if self.is_stdout:
                    return original_stdout.fileno()
                else:
                    return original_stderr.fileno()
            except AttributeError:
                # Handle error
                raise ValueError("The object does not have a fileno method")

        def isatty(self):
            return False

        def write(self, message):
            global is_start_mode

            if any(f(message) for f in message_collapses):
                return

            if is_start_mode:
                match = re.search(pat_import_fail, message)
                if match:
                    import_failed_extensions.add(match.group(1).strip())

                if not self.is_stdout:
                    origin_info = extract_origin_module()
                    if origin_info is not None:
                        name, origin_path = origin_info
                        
                        if name != 'comfyui-manager':
                            if name not in cm_global.error_dict:
                                cm_global.error_dict[name] = {'name': name, 'path': origin_path, 'msg': ''}

                            cm_global.error_dict[name]['msg'] += message

            if not self.is_stdout:
                match = re.search(pat_tqdm, message)
                if match:
                    message = re.sub(r'([#|])\d', r'\1▌', message)
                    message = re.sub('#', '█', message)
                    if '100%' in message:
                        self.sync_write(message)
                    else:
                        write_stderr(message)
                        original_stderr.flush()
                else:
                    self.sync_write(message)
            else:
                self.sync_write(message)

        def sync_write(self, message, file_only=False):
            with log_lock:
                timestamp = current_timestamp()
                if self.last_char != '\n':
                    log_file.write(message)
                else:
                    log_file.write(f"[{timestamp}] {message}")

                try:
                    log_file.flush()
                except Exception:
                    pass

                self.last_char = message if message == '' else message[-1]

            if not file_only:
                with std_log_lock:
                    if self.is_stdout:
                        write_stdout(message)
                        original_stdout.flush()
                    else:
                        write_stderr(message)
                        original_stderr.flush()

        def flush(self):
            try:
                log_file.flush()
            except Exception:
                pass

            with std_log_lock:
                try:
                    if self.is_stdout:
                        original_stdout.flush()
                    else:
                        original_stderr.flush()
                except (OSError, ValueError):
                    pass

        def close(self):
            self.flush()

        def reconfigure(self, *args, **kwargs):
            pass

        # You can close through sys.stderr.close_log()
        def close_log(self):
            sys.stderr = original_stderr
            sys.stdout = original_stdout
            log_file.close()
            
    def close_log():
        sys.stderr = original_stderr
        sys.stdout = original_stdout
        log_file.close()


    if enable_file_logging:
        sys.stdout = ComfyUIManagerLogger(True)
        stderr_wrapper = ComfyUIManagerLogger(False)
        sys.stderr = stderr_wrapper

        atexit.register(close_log)
    else:
        sys.stdout.close_log = lambda: None
        stderr_wrapper = None


    class LoggingHandler(logging.Handler):
        def emit(self, record):
            global is_start_mode

            try:
                message = record.getMessage()
            except Exception as e:
                message = f"<<logging error>>: {record} - {e}"
                original_stderr.write(message)

            if is_start_mode:
                match = re.search(pat_import_fail, message)
                if match:
                    import_failed_extensions.add(match.group(1).strip())

                if 'Traceback' in message:
                    file_lists = self._extract_file_paths(message)
                    origin_info = extract_origin_module_from_strings(file_lists)
                    if origin_info is not None:
                        name, origin_path = origin_info
                        
                        if name != 'comfyui-manager':
                            if name not in cm_global.error_dict:
                                cm_global.error_dict[name] = {'name': name, 'path': origin_path, 'msg': ''}

                            cm_global.error_dict[name]['msg'] += message

                if 'Starting server' in message:
                    is_start_mode = False
                    finalize_startup()

            if stderr_wrapper:
                stderr_wrapper.sync_write(message+'\n', file_only=True)

        def _extract_file_paths(self, msg):
            file_paths = []
            for line in msg.split('\n'):
                match = re.findall(r'File \"(.*?)\", line \d+', line)
                for x in match:
                    if not x.startswith('<'):
                        file_paths.extend(match)
            return file_paths


    logging.getLogger().addHandler(LoggingHandler())


except Exception as e:
    print(f"[ComfyUI-Manager] Logging failed: {e}")


print("** ComfyUI startup time:", current_timestamp())
print("** Platform:", platform.system())
print("** Python version:", sys.version)
print("** Python executable:", sys.executable)
print("** ComfyUI Path:", comfy_path)
print("** ComfyUI Base Folder Path:", comfy_base_path)
print("** User directory:", folder_paths.user_directory)
print("** ComfyUI-Manager config path:", manager_config_path)


if log_path_base is not None:
    print("** Log path:", os.path.abspath(f'{log_path_base}.log'))
else:
    print("** Log path: file logging is disabled")


def read_downgrade_blacklist():
    try:
        if 'downgrade_blacklist' in default_conf:
            items = default_conf['downgrade_blacklist'].split(',')
            items = [x.strip() for x in items if x != '']
            cm_global.pip_downgrade_blacklist += items
            cm_global.pip_downgrade_blacklist = list(set(cm_global.pip_downgrade_blacklist))
    except Exception:
        pass


read_downgrade_blacklist()


def check_bypass_ssl():
    try:
        import ssl
        if 'bypass_ssl' in default_conf and default_conf['bypass_ssl'].lower() == 'true':
            print(f"[ComfyUI-Manager] WARN: Unsafe - SSL verification bypass option is Enabled. (see {manager_config_path})")
            ssl._create_default_https_context = ssl._create_unverified_context  # SSL certificate error fix.
    except Exception:
        pass

check_bypass_ssl()


# Perform install
processed_install = set()
script_list_path = os.path.join(manager_files_path, "startup-scripts", "install-scripts.txt")
pip_fixer = manager_util.PIPFixer(manager_util.get_installed_packages(), comfy_path, manager_files_path)


def is_installed(name):
    name = name.strip()

    if name.startswith('#'):
        return True

    pattern = r'([^<>!~=]+)([<>!~=]=?)([0-9.a-zA-Z]*)'
    match = re.search(pattern, name)

    if match:
        name = match.group(1)

    if name in cm_global.pip_blacklist:
        return True

    if name in cm_global.pip_downgrade_blacklist:
        pips = manager_util.get_installed_packages()

        if match is None:
            if name in pips:
                return True
        elif match.group(2) in ['<=', '==', '<', '~=']:
            if name in pips:
                if manager_util.StrictVersion(pips[name]) >= manager_util.StrictVersion(match.group(3)):
                    print(f"[ComfyUI-Manager] skip black listed pip installation: '{name}'")
                    return True

    pkg = manager_util.get_installed_packages().get(name.lower())
    if pkg is None:
        return False  # update if not installed

    if match is None:
        return True   # don't update if version is not specified

    if match.group(2) in ['>', '>=']:
        if manager_util.StrictVersion(pkg) < manager_util.StrictVersion(match.group(3)):
            return False
        elif manager_util.StrictVersion(pkg) > manager_util.StrictVersion(match.group(3)):
            print(f"[SKIP] Downgrading pip package isn't allowed: {name.lower()} (cur={pkg})")

    if match.group(2) == '==':
        if manager_util.StrictVersion(pkg) < manager_util.StrictVersion(match.group(3)):
            return False

    if match.group(2) == '~=':
        if manager_util.StrictVersion(pkg) == manager_util.StrictVersion(match.group(3)):
            return False

    return True       # prevent downgrade


if os.path.exists(restore_snapshot_path):
    try:
        cloned_repos = []

        def msg_capture(stream, prefix):
            stream.reconfigure(encoding=locale.getpreferredencoding(), errors='replace')
            for msg in stream:
                if msg.startswith("CLONE: "):
                    cloned_repos.append(msg[7:])
                    if prefix == '[!]':
                        print(prefix, msg, end="", file=sys.stderr)
                    else:
                        print(prefix, msg, end="")

                elif prefix == '[!]' and ('it/s]' in msg or 's/it]' in msg) and ('%|' in msg or 'it [' in msg):
                    if msg.startswith('100%'):
                        print('\r' + msg, end="", file=sys.stderr),
                    else:
                        print('\r'+msg[:-1], end="", file=sys.stderr),
                else:
                    if prefix == '[!]':
                        print(prefix, msg, end="", file=sys.stderr)
                    else:
                        print(prefix, msg, end="")

        print("[ComfyUI-Manager] Restore snapshot.")
        new_env = os.environ.copy()
        if 'COMFYUI_FOLDERS_BASE_PATH' not in new_env:
            new_env["COMFYUI_FOLDERS_BASE_PATH"] = comfy_path

        if 'COMFYUI_PATH' not in new_env:
            new_env['COMFYUI_PATH'] = os.path.dirname(folder_paths.__file__)

        cmd_str = [sys.executable, '-m', 'cm_cli', 'restore-snapshot', restore_snapshot_path]
        exit_code = process_wrap(cmd_str, custom_nodes_base_path, handler=msg_capture, env=new_env)

        if exit_code != 0:
            print("[ComfyUI-Manager] Restore snapshot failed.")
        else:
            print("[ComfyUI-Manager] Restore snapshot done.")

    except Exception as e:
        print(e)
        print("[ComfyUI-Manager] Restore snapshot failed.")

    os.remove(restore_snapshot_path)


def execute_lazy_install_script(repo_path, executable):
    global processed_install

    install_script_path = os.path.join(repo_path, "install.py")
    requirements_path = os.path.join(repo_path, "requirements.txt")

    if os.path.exists(requirements_path) and not _unified_resolver_succeeded:
        # Per-node pip install: only runs if unified resolver is disabled or failed
        print(f"Install: pip packages for '{repo_path}'")

        lines = manager_util.robust_readlines(requirements_path)
        for line in lines:
            package_name = remap_pip_package(line.strip())
            package_name = package_name.split('#')[0].strip()
            if package_name and not is_installed(package_name):
                if '--index-url' in package_name:
                    s = package_name.split('--index-url')
                    install_cmd = manager_util.make_pip_cmd(["install", s[0].strip(), '--index-url', s[1].strip()])
                else:
                    install_cmd = manager_util.make_pip_cmd(["install", package_name])

                process_wrap(install_cmd, repo_path)

    if os.path.exists(install_script_path) and f'{repo_path}/install.py' not in processed_install:
        processed_install.add(f'{repo_path}/install.py')
        print(f"Install: install script for '{repo_path}'")
        install_cmd = [executable, "install.py"]

        new_env = os.environ.copy()
        if 'COMFYUI_FOLDERS_BASE_PATH' not in new_env:
            new_env["COMFYUI_FOLDERS_BASE_PATH"] = comfy_path
        process_wrap(install_cmd, repo_path, env=new_env)


def execute_lazy_cnr_switch(target, zip_url, from_path, to_path, no_deps, custom_nodes_path):
    import uuid
    import shutil

    # 1. download
    archive_name = f"CNR_temp_{str(uuid.uuid4())}.zip"  # should be unpredictable name - security precaution
    download_path = os.path.join(custom_nodes_path, archive_name)
    manager_downloader.download_url(zip_url, custom_nodes_path, archive_name)

    # 2. extract files into <node_id>@<cur_ver>
    extracted = manager_util.extract_package_as_zip(download_path, from_path)
    os.remove(download_path)

    if extracted is None:
        if len(os.listdir(from_path)) == 0:
            shutil.rmtree(from_path)

        print(f'Empty archive file: {target}')
        return False


    # 3. calculate garbage files (.tracking - extracted)
    tracking_info_file = os.path.join(from_path, '.tracking')
    prev_files = set()
    with open(tracking_info_file, 'r') as f:
        for line in f:
            prev_files.add(line.strip())
    garbage = prev_files.difference(extracted)
    garbage = [os.path.join(custom_nodes_path, x) for x in garbage]

    # 4-1. remove garbage files
    for x in garbage:
        if os.path.isfile(x):
            os.remove(x)

    # 4-2. remove garbage dir if empty
    for x in garbage:
        if os.path.isdir(x):
            if not os.listdir(x):
                os.rmdir(x)

    # 5. rename dir name <node_id>@<prev_ver> ==> <node_id>@<cur_ver>
    print(f"'{from_path}' is moved to '{to_path}'")
    shutil.move(from_path, to_path)

    # 6. create .tracking file
    tracking_info_file = os.path.join(to_path, '.tracking')
    with open(tracking_info_file, "w", encoding='utf-8') as file:
        file.write('\n'.join(list(extracted)))


script_executed = False

def execute_startup_script():
    global script_executed
    print("\n#######################################################################")
    print("[ComfyUI-Manager] Starting dependency installation/(de)activation for the extension\n")

    custom_nodelist_cache = None

    def get_custom_node_paths():
        nonlocal custom_nodelist_cache
        if custom_nodelist_cache is None:
            custom_nodelist_cache = set()
            for base in folder_paths.get_folder_paths('custom_nodes'):
                for x in os.listdir(base):
                    fullpath = os.path.join(base, x)
                    if os.path.isdir(fullpath):
                        custom_nodelist_cache.add(fullpath)

        return custom_nodelist_cache

    def execute_lazy_delete(path):
        # Validate to prevent arbitrary paths from being deleted
        if path not in get_custom_node_paths():
            logging.error(f"## ComfyUI-Manager: The scheduled '{path}' is not a custom node path, so the deletion has been canceled.")
            return

        if not os.path.exists(path):
            logging.info(f"## ComfyUI-Manager: SKIP-DELETE => '{path}' (already deleted)")
            return

        try:
            shutil.rmtree(path)
            logging.info(f"## ComfyUI-Manager: DELETE => '{path}'")
        except Exception as e:
            logging.error(f"## ComfyUI-Manager: Failed to delete '{path}' ({e})")

    executed = set()
    # Read each line from the file and convert it to a list using eval
    with open(script_list_path, 'r', encoding="UTF-8", errors="ignore") as file:
        for line in file:
            if line in executed:
                continue

            executed.add(line)

            try:
                script = ast.literal_eval(line)

                if script[1].startswith('#') and script[1] != '#FORCE':
                    if script[1] == "#LAZY-INSTALL-SCRIPT":
                        execute_lazy_install_script(script[0], script[2])

                    elif script[1] == "#LAZY-CNR-SWITCH-SCRIPT":
                        execute_lazy_cnr_switch(script[0], script[2], script[3], script[4], script[5], script[6])
                        execute_lazy_install_script(script[3], script[7])

                    elif script[1] == "#LAZY-DELETE-NODEPACK":
                        execute_lazy_delete(script[2])

                elif os.path.exists(script[0]):
                    if script[1] == "#FORCE":
                        del script[1]
                    else:
                        if 'pip' in script[1:] and 'install' in script[1:] and is_installed(script[-1]):
                            continue

                    print(f"\n## ComfyUI-Manager: EXECUTE => {script[1:]}")
                    print(f"\n## Execute management script for '{script[0]}'")

                    new_env = os.environ.copy()
                    if 'COMFYUI_FOLDERS_BASE_PATH' not in new_env:
                        new_env["COMFYUI_FOLDERS_BASE_PATH"] = comfy_path
                    exit_code = process_wrap(script[1:], script[0], env=new_env)

                    if exit_code != 0:
                        print(f"management script failed: {script[0]}")
                else:
                    print(f"\n## ComfyUI-Manager: CANCELED => {script[1:]}")

            except Exception as e:
                print(f"[ERROR] Failed to execute management script: {line} / {e}")

    # Remove the script_list_path file
    if os.path.exists(script_list_path):
        script_executed = True
        os.remove(script_list_path)
        
    print("\n[ComfyUI-Manager] Startup script completed.")
    print("#######################################################################\n")


# --- Unified dependency resolver: batch resolution at startup ---
# Runs unconditionally when enabled, independent of install-scripts.txt existence.
if manager_util.use_unified_resolver:
    try:
        from .common.unified_dep_resolver import (
            UnifiedDepResolver,
            UvNotAvailableError,
            collect_base_requirements,
            collect_node_pack_paths,
        )

        _resolver = UnifiedDepResolver(
            node_pack_paths=collect_node_pack_paths(folder_paths.get_folder_paths('custom_nodes')),
            base_requirements=collect_base_requirements(comfy_path),
            blacklist=set(),
            overrides={},
            downgrade_blacklist=[],
        )
        _result = _resolver.resolve_and_install()
        if _result.success:
            _unified_resolver_succeeded = True
            logging.info("[UnifiedDepResolver] startup batch resolution succeeded")
        else:
            manager_util.use_unified_resolver = False
            logging.warning("[UnifiedDepResolver] startup batch failed: %s, falling back to per-node pip", _result.error)
    except UvNotAvailableError:
        manager_util.use_unified_resolver = False
        logging.warning("[UnifiedDepResolver] uv not available at startup, falling back to per-node pip")
    except Exception as e:
        manager_util.use_unified_resolver = False
        logging.warning("[UnifiedDepResolver] startup error: %s, falling back to per-node pip", e)

# Check if script_list_path exists
if os.path.exists(script_list_path):
    execute_startup_script()


pip_fixer.fix_broken()

del processed_install
del pip_fixer
manager_util.clear_pip_cache()

if script_executed:
    # Restart
    print("[ComfyUI-Manager] Restarting to reapply dependency installation.")

    if '__COMFY_CLI_SESSION__' in os.environ:
        with open(os.path.join(os.environ['__COMFY_CLI_SESSION__'] + '.reboot'), 'w'):
            pass

        print("--------------------------------------------------------------------------\n")
        exit(0)
    else:
        sys_argv = sys.argv.copy()

        if sys_argv[0].endswith("__main__.py"):  # this is a python module
            module_name = os.path.basename(os.path.dirname(sys_argv[0]))
            cmds = [sys.executable, '-m', module_name] + sys_argv[1:]
        elif sys.platform.startswith('win32'):
            cmds = ['"' + sys.executable + '"', '"' + sys_argv[0] + '"'] + sys_argv[1:]
        else:
            cmds = [sys.executable] + sys_argv

        print(f"Command: {cmds}", flush=True)
        print("--------------------------------------------------------------------------\n")

        os.execv(sys.executable, cmds)


def check_windows_event_loop_policy():
    try:
        import configparser
        config = configparser.ConfigParser(strict=False)
        config.read(manager_config_path)
        default_conf = config['default']

        if 'windows_selector_event_loop_policy' in default_conf and default_conf['windows_selector_event_loop_policy'].lower() == 'true':
            try:
                import asyncio
                import asyncio.windows_events
                asyncio.set_event_loop_policy(asyncio.windows_events.WindowsSelectorEventLoopPolicy())
                print("[ComfyUI-Manager] Windows event loop policy mode enabled")
            except Exception as e:
                print(f"[ComfyUI-Manager] WARN: Windows initialization fail: {e}")
    except Exception:
        pass


if platform.system() == 'Windows':
    check_windows_event_loop_policy()