feat(deps): add unified dependency resolver using uv pip compile

- Add UnifiedDepResolver module with 7 FRs: collect, compile, install pipeline
- Integrate startup batch resolution in prestartup_script.py (module scope)
- Skip per-node pip install in execute_install_script() when unified mode active
- Add use_unified_resolver config flag following use_uv pattern
- Input sanitization: reject -r, -e, --find-links, @ file://, path separators
- Handle --index-url/--extra-index-url separation with credential redaction
- Fallback to per-node pip on resolver failure or uv unavailability
- Add 98 unit tests across 20 test classes
- Add PRD and Design docs with cm_global integration marked as DEFERRED

comfyui_manager/common/manager_util.py

@@ -25,6 +25,7 @@ comfyui_manager_path = os.path.abspath(os.path.join(os.path.dirname(__file__), '
 cache_dir = os.path.join(comfyui_manager_path, '.cache')  # This path is also updated together in **manager_core.update_user_directory**.
 
 use_uv = False
+use_unified_resolver = False
 bypass_ssl = False
 
 def is_manager_pip_package():

comfyui_manager/common/unified_dep_resolver.py

@@ -0,0 +1,625 @@
+"""Unified Dependency Resolver for ComfyUI Manager.
+
+Resolves and installs all node-pack dependencies at once using ``uv pip compile``
+followed by ``uv pip install -r``, replacing per-node-pack ``pip install`` calls.
+
+Responsibility scope
+--------------------
+- Dependency collection, resolution, and installation **only**.
+- ``install.py`` execution and ``PIPFixer`` calls are the caller's responsibility.
+
+See Also
+--------
+- docs/dev/PRD-unified-dependency-resolver.md
+- docs/dev/DESIGN-unified-dependency-resolver.md
+"""
+
+from __future__ import annotations
+
+import logging
+import os
+import re
+import shutil
+import subprocess
+import sys
+import tempfile
+import time
+from collections import defaultdict
+from dataclasses import dataclass, field
+
+from . import manager_util
+
+logger = logging.getLogger("ComfyUI-Manager")
+
+# ---------------------------------------------------------------------------
+# Exceptions
+# ---------------------------------------------------------------------------
+
+class UvNotAvailableError(RuntimeError):
+    """Raised when neither ``python -m uv`` nor standalone ``uv`` is found."""
+
+
+# ---------------------------------------------------------------------------
+# Data classes
+# ---------------------------------------------------------------------------
+
+@dataclass
+class PackageRequirement:
+    """Individual package dependency."""
+    name: str       # Normalised package name
+    spec: str       # Original spec string (e.g. ``torch>=2.0``)
+    source: str     # Absolute path of the source node pack
+
+
+@dataclass
+class CollectedDeps:
+    """Aggregated dependency collection result."""
+    requirements: list[PackageRequirement] = field(default_factory=list)
+    skipped: list[tuple[str, str]] = field(default_factory=list)
+    sources: dict[str, list[str]] = field(default_factory=dict)
+    extra_index_urls: list[str] = field(default_factory=list)
+
+
+@dataclass
+class LockfileResult:
+    """Result of ``uv pip compile``."""
+    success: bool
+    lockfile_path: str | None = None
+    conflicts: list[str] = field(default_factory=list)
+    stderr: str = ""
+
+
+@dataclass
+class InstallResult:
+    """Result of ``uv pip install -r`` (atomic: all-or-nothing)."""
+    success: bool
+    installed: list[str] = field(default_factory=list)
+    skipped: list[str] = field(default_factory=list)
+    stderr: str = ""
+
+
+@dataclass
+class ResolveResult:
+    """Full pipeline result."""
+    success: bool
+    collected: CollectedDeps | None = None
+    lockfile: LockfileResult | None = None
+    install: InstallResult | None = None
+    error: str | None = None
+
+
+# ---------------------------------------------------------------------------
+# Resolver
+# ---------------------------------------------------------------------------
+
+_TMP_PREFIX = "comfyui_resolver_"
+
+# Security: reject dangerous requirement patterns.
+_DANGEROUS_PATTERNS = re.compile(
+    r'^(-r\b|--requirement\b|-e\b|--editable\b|-c\b|--constraint\b'
+    r'|--find-links\b|-f\b|.*@\s*file://)',
+    re.IGNORECASE,
+)
+
+# Credential redaction in index URLs.
+_CREDENTIAL_PATTERN = re.compile(r'://([^@]+)@')
+
+# Version-spec parsing (same regex as existing ``is_blacklisted()``).
+_VERSION_SPEC_PATTERN = re.compile(r'([^<>!~=]+)([<>!~=]=?)([^ ]*)')
+
+
+
+def collect_node_pack_paths(custom_nodes_dirs: list[str]) -> list[str]:
+    """Collect all installed node-pack directory paths.
+
+    Parameters
+    ----------
+    custom_nodes_dirs:
+        Base directories returned by ``folder_paths.get_folder_paths('custom_nodes')``.
+
+    Returns
+    -------
+    list[str]
+        Paths of node-pack directories (immediate subdirectories of each base).
+    """
+    paths: list[str] = []
+    for base in custom_nodes_dirs:
+        if os.path.isdir(base):
+            for name in os.listdir(base):
+                fullpath = os.path.join(base, name)
+                if os.path.isdir(fullpath):
+                    paths.append(fullpath)
+    return paths
+
+
+def collect_base_requirements(comfy_path: str) -> list[str]:
+    """Read ComfyUI's own base requirements as constraint lines.
+
+    Reads ``requirements.txt`` and ``manager_requirements.txt`` from *comfy_path*.
+    These are ComfyUI-level dependencies only — never read from node packs.
+
+    Parameters
+    ----------
+    comfy_path:
+        Root directory of the ComfyUI installation.
+
+    Returns
+    -------
+    list[str]
+        Non-empty, non-comment requirement lines.
+    """
+    reqs: list[str] = []
+    for filename in ("requirements.txt", "manager_requirements.txt"):
+        req_path = os.path.join(comfy_path, filename)
+        if os.path.exists(req_path):
+            with open(req_path, encoding="utf-8") as f:
+                reqs.extend(
+                    line.strip() for line in f
+                    if line.strip() and not line.strip().startswith('#')
+                )
+    return reqs
+
+
+class UnifiedDepResolver:
+    """Unified dependency resolver.
+
+    Resolves and installs all dependencies of (installed + new) node packs at
+    once using *uv*.
+
+    Parameters
+    ----------
+    node_pack_paths:
+        Absolute paths of node-pack directories to consider.
+    base_requirements:
+        Lines from ComfyUI's own ``requirements.txt`` (used as constraints).
+    blacklist:
+        Package names to skip unconditionally (default: ``cm_global.pip_blacklist``).
+    overrides:
+        Package-name remapping dict (default: ``cm_global.pip_overrides``).
+    downgrade_blacklist:
+        Packages whose installed versions must not be downgraded
+        (default: ``cm_global.pip_downgrade_blacklist``).
+    """
+
+    def __init__(
+        self,
+        node_pack_paths: list[str],
+        base_requirements: list[str] | None = None,
+        blacklist: set[str] | None = None,
+        overrides: dict[str, str] | None = None,
+        downgrade_blacklist: list[str] | None = None,
+    ) -> None:
+        self.node_pack_paths = node_pack_paths
+        self.base_requirements = base_requirements or []
+        self.blacklist: set[str] = blacklist if blacklist is not None else set()
+        self.overrides: dict[str, str] = overrides if overrides is not None else {}
+        self.downgrade_blacklist: list[str] = (
+            downgrade_blacklist if downgrade_blacklist is not None else []
+        )
+
+    # ------------------------------------------------------------------
+    # Public API
+    # ------------------------------------------------------------------
+
+    def resolve_and_install(self) -> ResolveResult:
+        """Execute the full pipeline: cleanup → collect → compile → install."""
+        self.cleanup_stale_tmp()
+
+        tmp_dir: str | None = None
+        try:
+            # 1. Collect
+            collected = self.collect_requirements()
+            if not collected.requirements:
+                logger.info("[UnifiedDepResolver] No dependencies to resolve")
+                return ResolveResult(success=True, collected=collected)
+
+            logger.info(
+                "[UnifiedDepResolver] Collected %d deps from %d sources (skipped %d)",
+                len(collected.requirements),
+                len(collected.sources),
+                len(collected.skipped),
+            )
+
+            # 2. Compile
+            lockfile = self.compile_lockfile(collected)
+            if not lockfile.success:
+                return ResolveResult(
+                    success=False,
+                    collected=collected,
+                    lockfile=lockfile,
+                    error=f"compile failed: {'; '.join(lockfile.conflicts)}",
+                )
+            # tmp_dir is the parent of lockfile_path
+            tmp_dir = os.path.dirname(lockfile.lockfile_path)  # type: ignore[arg-type]
+
+            # 3. Install
+            install = self.install_from_lockfile(lockfile.lockfile_path)  # type: ignore[arg-type]
+            return ResolveResult(
+                success=install.success,
+                collected=collected,
+                lockfile=lockfile,
+                install=install,
+                error=install.stderr if not install.success else None,
+            )
+        except UvNotAvailableError:
+            raise
+        except Exception as exc:
+            logger.warning("[UnifiedDepResolver] unexpected error: %s", exc)
+            return ResolveResult(success=False, error=str(exc))
+        finally:
+            if tmp_dir and os.path.isdir(tmp_dir):
+                shutil.rmtree(tmp_dir, ignore_errors=True)
+
+    # ------------------------------------------------------------------
+    # Step 1: collect
+    # ------------------------------------------------------------------
+
+    def collect_requirements(self) -> CollectedDeps:
+        """Collect dependencies from all node packs."""
+        requirements: list[PackageRequirement] = []
+        skipped: list[tuple[str, str]] = []
+        sources: dict[str, list[str]] = defaultdict(list)
+        extra_index_urls: list[str] = []
+
+        for pack_path in self.node_pack_paths:
+            # Exclude disabled node packs (directory-based mechanism).
+            if self._is_disabled_path(pack_path):
+                continue
+
+            req_file = os.path.join(pack_path, "requirements.txt")
+            if not os.path.exists(req_file):
+                continue
+
+            for raw_line in self._read_requirements(req_file):
+                line = raw_line.split('#')[0].strip()
+                if not line:
+                    continue
+
+                # 0. Security: reject dangerous patterns
+                if _DANGEROUS_PATTERNS.match(line):
+                    skipped.append((line, f"rejected: dangerous pattern in {pack_path}"))
+                    logger.warning(
+                        "[UnifiedDepResolver] rejected dangerous line: '%s' from %s",
+                        line, pack_path,
+                    )
+                    continue
+
+                # 1. Separate --index-url / --extra-index-url handling
+                #    (before path separator check, because URLs contain '/')
+                if '--index-url' in line or '--extra-index-url' in line:
+                    pkg_spec, index_url = self._split_index_url(line)
+                    if index_url:
+                        extra_index_urls.append(index_url)
+                    line = pkg_spec
+                    if not line:
+                        # Standalone option line (no package prefix)
+                        continue
+
+                # Reject path separators in package name portion
+                pkg_name_part = re.split(r'[><=!~;]', line)[0]
+                if '/' in pkg_name_part or '\\' in pkg_name_part:
+                    skipped.append((line, "rejected: path separator in package name"))
+                    logger.warning(
+                        "[UnifiedDepResolver] rejected path separator: '%s' from %s",
+                        line, pack_path,
+                    )
+                    continue
+
+                # 2. Remap package name
+                pkg_spec = self._remap_package(line)
+
+                # 3. Extract normalised name
+                pkg_name = self._extract_package_name(pkg_spec)
+
+                # 4. Blacklist check
+                if pkg_name in self.blacklist:
+                    skipped.append((pkg_spec, "blacklisted"))
+                    continue
+
+                # 5. Downgrade blacklist check
+                if self._is_downgrade_blacklisted(pkg_name, pkg_spec):
+                    skipped.append((pkg_spec, "downgrade blacklisted"))
+                    continue
+
+                # 6. Collect (no dedup — uv handles resolution)
+                requirements.append(
+                    PackageRequirement(name=pkg_name, spec=pkg_spec, source=pack_path)
+                )
+                sources[pkg_name].append(pack_path)
+
+        return CollectedDeps(
+            requirements=requirements,
+            skipped=skipped,
+            sources=dict(sources),
+            extra_index_urls=list(set(extra_index_urls)),
+        )
+
+    # ------------------------------------------------------------------
+    # Step 2: compile
+    # ------------------------------------------------------------------
+
+    def compile_lockfile(self, deps: CollectedDeps) -> LockfileResult:
+        """Generate pinned requirements via ``uv pip compile``."""
+        tmp_dir = tempfile.mkdtemp(prefix=_TMP_PREFIX)
+
+        try:
+            # Write temp requirements
+            tmp_req = os.path.join(tmp_dir, "input-requirements.txt")
+            with open(tmp_req, "w", encoding="utf-8") as fh:
+                for req in deps.requirements:
+                    fh.write(req.spec + "\n")
+
+            # Write constraints (base dependencies)
+            tmp_constraints: str | None = None
+            if self.base_requirements:
+                tmp_constraints = os.path.join(tmp_dir, "constraints.txt")
+                with open(tmp_constraints, "w", encoding="utf-8") as fh:
+                    for line in self.base_requirements:
+                        fh.write(line.strip() + "\n")
+
+            lockfile_path = os.path.join(tmp_dir, "resolved-requirements.txt")
+
+            cmd = self._get_uv_cmd() + [
+                "pip", "compile",
+                tmp_req,
+                "--output-file", lockfile_path,
+                "--python", sys.executable,
+            ]
+            if tmp_constraints:
+                cmd += ["--constraint", tmp_constraints]
+
+            for url in deps.extra_index_urls:
+                logger.info(
+                    "[UnifiedDepResolver] extra-index-url: %s",
+                    self._redact_url(url),
+                )
+                cmd += ["--extra-index-url", url]
+
+            logger.info("[UnifiedDepResolver] running: %s", " ".join(
+                self._redact_url(c) for c in cmd
+            ))
+
+            try:
+                result = subprocess.run(
+                    cmd,
+                    capture_output=True,
+                    text=True,
+                    timeout=300,
+                )
+            except subprocess.TimeoutExpired:
+                logger.warning("[UnifiedDepResolver] uv pip compile timed out (300s)")
+                return LockfileResult(
+                    success=False,
+                    conflicts=["compile timeout exceeded (300s)"],
+                    stderr="TimeoutExpired",
+                )
+
+            if result.returncode != 0:
+                conflicts = self._parse_conflicts(result.stderr)
+                return LockfileResult(
+                    success=False,
+                    conflicts=conflicts,
+                    stderr=result.stderr,
+                )
+
+            if not os.path.exists(lockfile_path):
+                return LockfileResult(
+                    success=False,
+                    conflicts=["lockfile not created despite success return code"],
+                    stderr=result.stderr,
+                )
+
+            return LockfileResult(success=True, lockfile_path=lockfile_path)
+
+        except UvNotAvailableError:
+            shutil.rmtree(tmp_dir, ignore_errors=True)
+            raise
+        except Exception:
+            shutil.rmtree(tmp_dir, ignore_errors=True)
+            raise
+
+    # ------------------------------------------------------------------
+    # Step 3: install
+    # ------------------------------------------------------------------
+
+    def install_from_lockfile(self, lockfile_path: str) -> InstallResult:
+        """Install from pinned requirements (``uv pip install -r``).
+
+        Do **not** use ``uv pip sync`` — it deletes packages not in the
+        lockfile, risking removal of torch, ComfyUI deps, etc.
+        """
+        cmd = self._get_uv_cmd() + [
+            "pip", "install",
+            "--requirement", lockfile_path,
+            "--python", sys.executable,
+        ]
+
+        logger.info("[UnifiedDepResolver] running: %s", " ".join(cmd))
+
+        try:
+            result = subprocess.run(
+                cmd,
+                capture_output=True,
+                text=True,
+                timeout=600,
+            )
+        except subprocess.TimeoutExpired:
+            logger.warning("[UnifiedDepResolver] uv pip install timed out (600s)")
+            return InstallResult(
+                success=False,
+                stderr="TimeoutExpired: install exceeded 600s",
+            )
+
+        installed, skipped_pkgs = self._parse_install_output(result)
+
+        return InstallResult(
+            success=result.returncode == 0,
+            installed=installed,
+            skipped=skipped_pkgs,
+            stderr=result.stderr if result.returncode != 0 else "",
+        )
+
+    # ------------------------------------------------------------------
+    # uv command resolution
+    # ------------------------------------------------------------------
+
+    def _get_uv_cmd(self) -> list[str]:
+        """Determine the ``uv`` command to use.
+
+        ``python_embeded`` spelling is intentional — matches the actual path
+        name in the ComfyUI Windows distribution.
+        """
+        embedded = 'python_embeded' in sys.executable
+
+        # 1. Try uv as a Python module
+        try:
+            test_cmd = (
+                [sys.executable]
+                + (['-s'] if embedded else [])
+                + ['-m', 'uv', '--version']
+            )
+            subprocess.check_output(test_cmd, stderr=subprocess.DEVNULL, timeout=5)
+            return [sys.executable] + (['-s'] if embedded else []) + ['-m', 'uv']
+        except Exception:
+            pass
+
+        # 2. Standalone uv executable
+        if shutil.which('uv'):
+            return ['uv']
+
+        raise UvNotAvailableError("uv is not available")
+
+    # ------------------------------------------------------------------
+    # Helpers — collection
+    # ------------------------------------------------------------------
+
+    @staticmethod
+    def _is_disabled_path(path: str) -> bool:
+        """Return ``True`` if *path* is within a ``.disabled`` directory."""
+        # New style: custom_nodes/.disabled/{name}
+        if '/.disabled/' in path or os.path.basename(os.path.dirname(path)) == '.disabled':
+            return True
+        # Old style: {name}.disabled suffix
+        if path.rstrip('/').endswith('.disabled'):
+            return True
+        return False
+
+    @staticmethod
+    def _read_requirements(filepath: str) -> list[str]:
+        """Read requirements file using ``robust_readlines`` pattern."""
+        return manager_util.robust_readlines(filepath)
+
+    @staticmethod
+    def _split_index_url(line: str) -> tuple[str, str | None]:
+        """Split ``'package --index-url URL'`` → ``(package, URL)``.
+
+        Also handles standalone ``--index-url URL`` and
+        ``--extra-index-url URL`` lines (with no package prefix).
+        """
+        # Handle --extra-index-url first (contains '--index-url' as substring)
+        for option in ('--extra-index-url', '--index-url'):
+            if option in line:
+                parts = line.split(option, 1)
+                pkg_spec = parts[0].strip()
+                url = parts[1].strip() if len(parts) == 2 else None
+                return pkg_spec, url
+        return line, None
+
+    def _remap_package(self, pkg: str) -> str:
+        """Apply ``pip_overrides`` remapping."""
+        if pkg in self.overrides:
+            remapped = self.overrides[pkg]
+            logger.info("[UnifiedDepResolver] '%s' remapped to '%s'", pkg, remapped)
+            return remapped
+        return pkg
+
+    @staticmethod
+    def _extract_package_name(spec: str) -> str:
+        """Extract normalised package name from a requirement spec."""
+        name = re.split(r'[><=!~;\[@ ]', spec)[0].strip()
+        return name.lower().replace('-', '_')
+
+    def _is_downgrade_blacklisted(self, pkg_name: str, pkg_spec: str) -> bool:
+        """Reproduce the downgrade logic from ``is_blacklisted()``.
+
+        Uses ``manager_util.StrictVersion`` — **not** ``packaging.version``.
+        """
+        if pkg_name not in self.downgrade_blacklist:
+            return False
+
+        installed = manager_util.get_installed_packages()
+        match = _VERSION_SPEC_PATTERN.search(pkg_spec)
+
+        if match is None:
+            # No version spec: prevent reinstall if already installed
+            if pkg_name in installed:
+                return True
+        elif match.group(2) in ('<=', '==', '<', '~='):
+            if pkg_name in installed:
+                try:
+                    installed_ver = manager_util.StrictVersion(installed[pkg_name])
+                    requested_ver = manager_util.StrictVersion(match.group(3))
+                    if installed_ver >= requested_ver:
+                        return True
+                except (ValueError, TypeError):
+                    logger.warning(
+                        "[UnifiedDepResolver] version parse failed: %s", pkg_spec,
+                    )
+                    return False
+
+        return False
+
+    # ------------------------------------------------------------------
+    # Helpers — parsing & output
+    # ------------------------------------------------------------------
+
+    @staticmethod
+    def _parse_conflicts(stderr: str) -> list[str]:
+        """Extract conflict descriptions from ``uv pip compile`` stderr."""
+        conflicts: list[str] = []
+        for line in stderr.splitlines():
+            line = line.strip()
+            if line and ('conflict' in line.lower() or 'error' in line.lower()):
+                conflicts.append(line)
+        return conflicts or [stderr.strip()] if stderr.strip() else []
+
+    @staticmethod
+    def _parse_install_output(
+        result: subprocess.CompletedProcess[str],
+    ) -> tuple[list[str], list[str]]:
+        """Parse ``uv pip install`` stdout for installed/skipped packages."""
+        installed: list[str] = []
+        skipped_pkgs: list[str] = []
+        for line in result.stdout.splitlines():
+            line_lower = line.strip().lower()
+            if 'installed' in line_lower or 'updated' in line_lower:
+                installed.append(line.strip())
+            elif 'already' in line_lower or 'satisfied' in line_lower:
+                skipped_pkgs.append(line.strip())
+        return installed, skipped_pkgs
+
+    @staticmethod
+    def _redact_url(url: str) -> str:
+        """Mask ``user:pass@`` credentials in URLs."""
+        return _CREDENTIAL_PATTERN.sub('://****@', url)
+
+    # ------------------------------------------------------------------
+    # Temp-file housekeeping
+    # ------------------------------------------------------------------
+
+    @classmethod
+    def cleanup_stale_tmp(cls, max_age_seconds: int = 3600) -> None:
+        """Remove stale temp directories from previous abnormal terminations."""
+        tmp_root = tempfile.gettempdir()
+        now = time.time()
+        for entry in os.scandir(tmp_root):
+            if entry.is_dir() and entry.name.startswith(_TMP_PREFIX):
+                try:
+                    age = now - entry.stat().st_mtime
+                    if age > max_age_seconds:
+                        shutil.rmtree(entry.path, ignore_errors=True)
+                        logger.info(
+                            "[UnifiedDepResolver] cleaned stale tmp: %s", entry.path,
+                        )
+                except OSError:
+                    pass

comfyui_manager/glob/manager_core.py

@@ -843,7 +843,10 @@ class UnifiedManager:
             install_cmd = ["#LAZY-INSTALL-SCRIPT", sys.executable]
             return try_install_script(url, repo_path, install_cmd)
         else:
-            if os.path.exists(requirements_path) and not no_deps:
+            if not no_deps and manager_util.use_unified_resolver:
+                # Unified mode: skip per-node pip install (deps resolved at startup batch)
+                logging.info("[UnifiedDepResolver] deps deferred to startup batch resolution for %s", repo_path)
+            elif os.path.exists(requirements_path) and not no_deps:
                 print("Install: pip packages")
                 pip_fixer = manager_util.PIPFixer(manager_util.get_installed_packages(), context.comfy_path, context.manager_files_path)
                 lines = manager_util.robust_readlines(requirements_path)
@@ -1604,6 +1607,7 @@ def write_config():
     config['default'] = {
         'git_exe': get_config()['git_exe'],
         'use_uv': get_config()['use_uv'],
+        'use_unified_resolver': get_config()['use_unified_resolver'],
         'channel_url': get_config()['channel_url'],
         'share_option': get_config()['share_option'],
         'bypass_ssl': get_config()['bypass_ssl'],
@@ -1642,12 +1646,14 @@ def read_config():
             return default_conf[key].lower() == 'true' if key in default_conf else False
 
         manager_util.use_uv = default_conf['use_uv'].lower() == 'true' if 'use_uv' in default_conf else False
+        manager_util.use_unified_resolver = default_conf['use_unified_resolver'].lower() == 'true' if 'use_unified_resolver' in default_conf else False
         manager_util.bypass_ssl = get_bool('bypass_ssl', False)
 
         return {
                     'http_channel_enabled': get_bool('http_channel_enabled', False),
                     'git_exe': default_conf.get('git_exe', ''),
                     'use_uv': get_bool('use_uv', True),
+                    'use_unified_resolver': get_bool('use_unified_resolver', False),
                     'channel_url': default_conf.get('channel_url', DEFAULT_CHANNEL),
                     'default_cache_as_channel_url': get_bool('default_cache_as_channel_url', False),
                     'share_option': default_conf.get('share_option', 'all').lower(),
@@ -1668,12 +1674,14 @@ def read_config():
         import importlib.util
         # temporary disable `uv` on Windows by default (https://github.com/Comfy-Org/ComfyUI-Manager/issues/1969)
         manager_util.use_uv = importlib.util.find_spec("uv") is not None and platform.system() != "Windows"
+        manager_util.use_unified_resolver = False
         manager_util.bypass_ssl = False
 
         return {
             'http_channel_enabled': False,
             'git_exe': '',
             'use_uv': manager_util.use_uv,
+            'use_unified_resolver': False,
             'channel_url': DEFAULT_CHANNEL,
             'default_cache_as_channel_url': False,
             'share_option': 'all',
@@ -1871,7 +1879,6 @@ def __win_check_git_pull(path):
 
 
 def execute_install_script(url, repo_path, lazy_mode=False, instant_execution=False, no_deps=False):
-    # import ipdb; ipdb.set_trace()
     install_script_path = os.path.join(repo_path, "install.py")
     requirements_path = os.path.join(repo_path, "requirements.txt")
 
@@ -1879,7 +1886,10 @@ def execute_install_script(url, repo_path, lazy_mode=False, instant_execution=Fa
         install_cmd = ["#LAZY-INSTALL-SCRIPT",  sys.executable]
         try_install_script(url, repo_path, install_cmd)
     else:
-        if os.path.exists(requirements_path) and not no_deps:
+        if not no_deps and manager_util.use_unified_resolver:
+            # Unified mode: skip per-node pip install (deps resolved at startup batch)
+            logging.info("[UnifiedDepResolver] deps deferred to startup batch resolution for %s", repo_path)
+        elif os.path.exists(requirements_path) and not no_deps:
             print("Install: pip packages")
             pip_fixer = manager_util.PIPFixer(manager_util.get_installed_packages(), context.comfy_path, context.manager_files_path)
             with open(requirements_path, "r") as requirements_file:

comfyui_manager/prestartup_script.py

@@ -88,6 +88,11 @@ 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':
@@ -96,9 +101,14 @@ def check_file_logging():
 
 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):
@@ -581,7 +591,8 @@ def execute_lazy_install_script(repo_path, executable):
     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):
+    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)
@@ -751,6 +762,35 @@ def execute_startup_script():
     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:
+            logging.warning("[UnifiedDepResolver] startup batch failed: %s, falling back to per-node pip", _result.error)
+    except UvNotAvailableError:
+        logging.warning("[UnifiedDepResolver] uv not available at startup, falling back to per-node pip")
+    except Exception as e:
+        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()