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
This commit is contained in:
Dr.Lt.Data
2026-02-07 06:02:53 +09:00
parent 0d88a3874d
commit e60a66b1e6
8 changed files with 2764 additions and 5 deletions
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# Architecture Design: Unified Dependency Resolver
## 1. System Architecture
### 1.1 Module Location
```
comfyui_manager/
├── glob/
│ └── manager_core.py # Existing: execute_install_script() call sites (2 locations)
├── common/
│ ├── manager_util.py # Existing: get_pip_cmd(), PIPFixer, use_uv flag
│ ├── cm_global.py # Existing: pip_overrides, pip_blacklist (runtime dynamic assignment)
│ └── unified_dep_resolver.py # New: Unified dependency resolution module
├── prestartup_script.py # Existing: config reading, remap_pip_package, cm_global initialization
└── legacy/
└── manager_core.py # Legacy (not a modification target)
```
The new module `unified_dep_resolver.py` is added to the `comfyui_manager/common/` directory.
It reuses `manager_util` utilities and `cm_global` global state from the same package.
> **Warning**: `cm_global.pip_overrides`, `pip_blacklist`, `pip_downgrade_blacklist` are
> NOT defined in `cm_global.py`. They are **dynamically assigned** during `prestartup_script.py` execution.
> In v1 unified mode, these are **not applied** — empty values are passed to the resolver constructor.
> The constructor interface accepts them for future extensibility (defaults to empty when `None`).
>
> **[DEFERRED]** Reading actual `cm_global` values at startup is deferred to a future version.
> The startup batch resolver in `prestartup_script.py` currently passes `blacklist=set()`,
> `overrides={}`, `downgrade_blacklist=[]`. The constructor and internal methods
> (`_remap_package`, `_is_downgrade_blacklisted`, blacklist check) are fully implemented
> and will work once real values are provided.
### 1.2 Overall Flow
```mermaid
flowchart TD
subgraph INSTALL_TIME["Install Time (immediate)"]
MC["manager_core.py<br/>execute_install_script() — 2 locations"]
MC -->|"use_unified_resolver=True"| SKIP["Skip per-node pip install<br/>(deps deferred to restart)"]
MC -->|"use_unified_resolver=False"| PIP["Existing pip install loop"]
SKIP --> INST["Run install.py"]
PIP --> INST
end
subgraph STARTUP["ComfyUI Restart (prestartup_script.py)"]
CHK{use_unified_resolver?}
CHK -->|Yes| UDR
CHK -->|No| LAZY["execute_lazy_install_script()<br/>per-node pip install (existing)"]
subgraph UDR["UnifiedDepResolver (batch)"]
S1["1. collect_requirements()<br/>(ALL installed node packs)"]
S2["2. compile_lockfile()"]
S3["3. install_from_lockfile()"]
S1 --> S2 --> S3
end
UDR -->|Success| FIX["PIPFixer.fix_broken()"]
UDR -->|Failure| LAZY
LAZY --> FIX2["PIPFixer.fix_broken()"]
end
```
> **Key design change**: The unified resolver runs at **startup time** (module scope), not at install time.
> At install time, `execute_install_script()` skips the pip loop when unified mode is active.
> At startup, `prestartup_script.py` runs the resolver at module scope — unconditionally when enabled,
> independent of `install-scripts.txt` existence. Blacklist/overrides/downgrade_blacklist are bypassed
> (empty values passed); `uv pip compile` handles all conflict resolution natively.
>
> **Note**: `execute_install_script()` exists in 2 locations in the codebase (excluding legacy module).
> - `UnifiedManager.execute_install_script()` (class method): Used for CNR installs, etc.
> - Standalone function `execute_install_script()`: Used for updates, git installs, etc.
> Both skip per-node pip install when unified mode is active.
### 1.3 uv Command Strategy
**`uv pip compile`** → Generates pinned requirements.txt (pip-compatible)
- Do not confuse with `uv lock`
- `uv lock` generates `uv.lock` (TOML) — cross-platform but incompatible with pip workflows
- This design uses a pip-compatible workflow (`uv pip compile``uv pip install -r`)
**`uv pip install -r`** ← Used instead of `uv pip sync`
- `uv pip sync`: **Deletes** packages not in lockfile → Risk of removing torch, ComfyUI deps
- `uv pip install -r`: Only performs additive installs, preserves existing packages → Safe
---
## 2. Class Design
### 2.1 UnifiedDepResolver
```python
class UnifiedDepResolver:
"""
Unified dependency resolver.
Resolves and installs all dependencies of (installed node packs + new node packs)
at once using uv.
Responsibility scope: Dependency resolution and installation only.
install.py execution and PIPFixer calls are handled by the caller (manager_core).
"""
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,
):
"""
Args:
node_pack_paths: List of node pack directory paths
base_requirements: Base dependencies (ComfyUI requirements, etc.)
blacklist: Blacklisted package set (default: empty set; not applied in v1 unified mode)
overrides: Package name remapping dict (default: empty dict; not applied in v1 unified mode)
downgrade_blacklist: Downgrade-prohibited package list (default: empty list; not applied in v1 unified mode)
"""
def resolve_and_install(self) -> ResolveResult:
"""Execute full pipeline: stale cleanup → collect → compile → install.
Calls cleanup_stale_tmp() at start to clean up residual files from previous abnormal terminations."""
def collect_requirements(self) -> CollectedDeps:
"""Collect dependencies from all node packs"""
def compile_lockfile(self, deps: CollectedDeps) -> LockfileResult:
"""Generate pinned requirements via uv pip compile"""
def install_from_lockfile(self, lockfile_path: str) -> InstallResult:
"""Install from pinned requirements (uv pip install -r)"""
```
### 2.2 Data Classes
```python
@dataclass
class PackageRequirement:
"""Individual package dependency"""
name: str # Package name (normalized)
spec: str # Original spec (e.g., "torch>=2.0")
source: str # Source node pack path
@dataclass
class CollectedDeps:
"""All collected dependencies"""
requirements: list[PackageRequirement] # Collected deps (duplicates allowed, uv resolves)
skipped: list[tuple[str, str]] # (package_name, skip_reason)
sources: dict[str, list[str]] # {package_name: [source_node_packs]}
extra_index_urls: list[str] # Additional index URLs separated from --index-url entries
@dataclass
class LockfileResult:
"""Compilation result"""
success: bool
lockfile_path: str | None # pinned requirements.txt path
conflicts: list[str] # Conflict details
stderr: str # uv error output
@dataclass
class InstallResult:
"""Installation result (uv pip install -r is atomic: all-or-nothing)"""
success: bool
installed: list[str] # Installed packages (stdout parsing)
skipped: list[str] # Already installed (stdout parsing)
stderr: str # uv stderr output (for failure analysis)
@dataclass
class ResolveResult:
"""Full pipeline result"""
success: bool
collected: CollectedDeps | None
lockfile: LockfileResult | None
install: InstallResult | None
error: str | None
```
---
## 3. Core Logic Details
### 3.1 Dependency Collection (`collect_requirements`)
```python
# Input sanitization: dangerous patterns to reject
_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
)
def collect_requirements(self) -> CollectedDeps:
requirements = []
skipped = []
sources = defaultdict(list)
extra_index_urls = []
for path in self.node_pack_paths:
# Exclude disabled node packs (directory-based mechanism)
# Disabled node packs are actually moved to custom_nodes/.disabled/,
# so they should already be excluded from input at this point.
# Defensive check: new style (.disabled/ directory) + old style ({name}.disabled suffix)
if ('/.disabled/' in path
or os.path.basename(os.path.dirname(path)) == '.disabled'
or path.rstrip('/').endswith('.disabled')):
continue
req_file = os.path.join(path, "requirements.txt")
if not os.path.exists(req_file):
continue
# chardet-based encoding detection (existing robust_readlines pattern)
for line in self._read_requirements(req_file):
line = line.split('#')[0].strip()
if not line:
continue
# 0. Input sanitization (security)
if self._DANGEROUS_PATTERNS.match(line):
skipped.append((line, f"rejected: dangerous pattern in {path}"))
logging.warning(f"[UnifiedDepResolver] rejected dangerous line: '{line}' from {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
# 1b. 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, f"rejected: path separator in package name"))
continue
# 2. Apply remap_pip_package (using cm_global.pip_overrides)
pkg_spec = self._remap_package(line)
# 3. Blacklist check (cm_global.pip_blacklist)
pkg_name = self._extract_package_name(pkg_spec)
if pkg_name in self.blacklist:
skipped.append((pkg_spec, "blacklisted"))
continue
# 4. Downgrade blacklist check (includes version comparison)
if self._is_downgrade_blacklisted(pkg_name, pkg_spec):
skipped.append((pkg_spec, "downgrade blacklisted"))
continue
# 5. Collect (no dedup — uv handles resolution)
req = PackageRequirement(
name=pkg_name,
spec=pkg_spec,
source=path,
)
requirements.append(req)
sources[pkg_name].append(path)
return CollectedDeps(
requirements=requirements,
skipped=skipped,
sources=dict(sources),
extra_index_urls=list(set(extra_index_urls)), # Deduplicate
)
def _split_index_url(self, line: str) -> tuple[str, str | None]:
"""Split 'package_name --index-url URL' → (package_name, 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
# but NOT '--index-url' due to the extra-index prefix)
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 _is_downgrade_blacklisted(self, pkg_name: str, pkg_spec: str) -> bool:
"""Reproduce the downgrade version comparison from existing is_blacklisted() logic.
Same logic as manager_core.py's is_blacklisted():
- No version spec and already installed → block (prevent reinstall)
- Operator is one of ['<=', '==', '<', '~='] and
installed version >= requested version → block (prevent downgrade)
- Version comparison uses manager_util.StrictVersion (NOT packaging.version)
"""
if pkg_name not in self.downgrade_blacklist:
return False
installed_packages = manager_util.get_installed_packages()
# Version spec parsing (same pattern as existing is_blacklisted())
pattern = r'([^<>!~=]+)([<>!~=]=?)([^ ]*)'
match = re.search(pattern, pkg_spec)
if match is None:
# No version spec: prevent reinstall if already installed
if pkg_name in installed_packages:
return True
elif match.group(2) in ['<=', '==', '<', '~=']:
# Downgrade operator: block if installed version >= requested version
if pkg_name in installed_packages:
try:
installed_ver = manager_util.StrictVersion(installed_packages[pkg_name])
requested_ver = manager_util.StrictVersion(match.group(3))
if installed_ver >= requested_ver:
return True
except (ValueError, TypeError):
logging.warning(f"[UnifiedDepResolver] version parse failed: {pkg_spec}")
return False
return False
def _remap_package(self, pkg: str) -> str:
"""Package name remapping based on cm_global.pip_overrides.
Reuses existing remap_pip_package() logic."""
if pkg in self.overrides:
remapped = self.overrides[pkg]
logging.info(f"[UnifiedDepResolver] '{pkg}' remapped to '{remapped}'")
return remapped
return pkg
```
### 3.2 Lockfile Generation (`compile_lockfile`)
**Behavior:**
1. Create a unique temp directory (`tempfile.mkdtemp(prefix="comfyui_resolver_")`) for concurrency safety
2. Write collected requirements and base constraints to temp files
3. Execute `uv pip compile` with options:
- `--output-file` (pinned requirements path within temp dir)
- `--python` (current interpreter)
- `--constraint` (base dependencies)
- `--extra-index-url` (from `CollectedDeps.extra_index_urls`, logged via `_redact_url()`)
4. Timeout: 300s — returns `LockfileResult(success=False)` on `TimeoutExpired`
5. On `returncode != 0`: parse stderr for conflict details via `_parse_conflicts()`
6. Post-success verification: confirm lockfile was actually created (handles edge case of `returncode==0` without output)
7. Temp directory cleanup: `shutil.rmtree()` in `except` block; on success, caller (`resolve_and_install`'s `finally`) handles cleanup
### 3.3 Dependency Installation (`install_from_lockfile`)
**Behavior:**
1. Execute `uv pip install --requirement <lockfile_path> --python <sys.executable>`
- **NOT `uv pip sync`** — sync deletes packages not in lockfile (dangerous for torch, ComfyUI deps)
2. `uv pip install -r` is **atomic** (all-or-nothing): no partial failure
3. Timeout: 600s — returns `InstallResult(success=False)` on `TimeoutExpired`
4. On success: parse stdout via `_parse_install_output()` to populate `installed`/`skipped` lists
5. On failure: `stderr` captures the failure cause; `installed=[]` (atomic model)
### 3.4 uv Command Resolution
**`_get_uv_cmd()` resolution order** (mirrors existing `get_pip_cmd()` pattern):
1. **Module uv**: `[sys.executable, '-m', 'uv']` (with `-s` flag for embedded Python — note: `python_embeded` spelling is intentional, matching ComfyUI Windows distribution path)
2. **Standalone uv**: `['uv']` via `shutil.which('uv')`
3. **Not found**: raises `UvNotAvailableError` → caught by caller for pip fallback
### 3.5 Stale Temp File Cleanup
**`cleanup_stale_tmp(max_age_seconds=3600)`** — classmethod, called at start of `resolve_and_install()`:
- Scans `tempfile.gettempdir()` for directories with prefix `comfyui_resolver_`
- Deletes directories older than `max_age_seconds` (default: 1 hour)
- Silently ignores `OSError` (permission issues, etc.)
### 3.6 Credential Redaction
```python
_CREDENTIAL_PATTERN = re.compile(r'://([^@]+)@')
def _redact_url(self, url: str) -> str:
"""Mask authentication info in URLs. user:pass@host → ****@host"""
return self._CREDENTIAL_PATTERN.sub('://****@', url)
```
All `--extra-index-url` logging passes through `_redact_url()`:
```python
# Logging example within compile_lockfile()
for url in deps.extra_index_urls:
logging.info(f"[UnifiedDepResolver] extra-index-url: {self._redact_url(url)}")
cmd += ["--extra-index-url", url] # Original URL passed to actual command
```
---
## 4. Existing Code Integration
### 4.1 manager_core.py Modification Points
**2 `execute_install_script()` locations — both skip deps in unified mode:**
#### 4.1.1 UnifiedManager.execute_install_script() (Class Method)
#### 4.1.2 Standalone Function execute_install_script()
**Both locations use the same pattern when unified mode is active:**
1. `lazy_mode=True` → schedule and return early (unchanged)
2. If `not no_deps and manager_util.use_unified_resolver`:
- **Skip** the `requirements.txt` pip install loop entirely (deps deferred to startup)
- Log: `"[UnifiedDepResolver] deps deferred to startup batch resolution"`
3. If `not manager_util.use_unified_resolver`: existing pip install loop runs (unchanged)
4. `install.py` execution: **always runs immediately** regardless of resolver mode
> **Parameter ordering differs:**
> - Method: `(self, url, repo_path, instant_execution, lazy_mode, no_deps)`
> - Standalone: `(url, repo_path, lazy_mode, instant_execution, no_deps)`
### 4.1.3 Startup Batch Resolver (`prestartup_script.py`)
**New**: Runs unified resolver at **module scope** — unconditionally when enabled, independent of `install-scripts.txt` existence.
**Execution point**: After config reading and `cm_global` initialization, **before** the `execute_startup_script()` gate.
**Logic** (uses module-level helpers from `unified_dep_resolver.py`):
1. `collect_node_pack_paths(folder_paths.get_folder_paths('custom_nodes'))` — enumerate all installed node pack directories
2. `collect_base_requirements(comfy_path)` — read `requirements.txt` + `manager_requirements.txt` from ComfyUI root (base deps only)
3. Create `UnifiedDepResolver` with **empty** blacklist/overrides/downgrade_blacklist (uv handles resolution natively; interface preserved for extensibility)
4. Call `resolve_and_install()` → on success set `_unified_resolver_succeeded = True`
5. On failure (including `UvNotAvailableError`): log warning, fall back to per-node pip
> `manager_requirements.txt` is read **only** from `comfy_path` (ComfyUI base), never from node packs.
> Node packs' `requirements.txt` are collected by the resolver's `collect_requirements()` method.
### 4.1.5 `execute_lazy_install_script()` Modification
When unified resolver **succeeds**, `execute_lazy_install_script()` skips the per-node pip install loop
(deps already batch-resolved at module scope). `install.py` still runs per node pack.
```python
# In execute_lazy_install_script():
if os.path.exists(requirements_path) and not _unified_resolver_succeeded:
# Per-node pip install: only runs if unified resolver is disabled or failed
...
# install.py always runs regardless
```
> **Note**: Gated on `_unified_resolver_succeeded` (success flag), NOT `use_unified_resolver` (enable flag).
> If the resolver is enabled but fails, `_unified_resolver_succeeded` remains False → per-node pip runs as fallback.
### 4.2 Configuration Addition (config.ini)
```ini
[default]
# Existing settings...
use_unified_resolver = false # Enable unified dependency resolution
```
### 4.3 Configuration Reading
Follows the existing `read_uv_mode()` / `use_uv` pattern:
- `prestartup_script.py`: `read_unified_resolver_mode()` reads from `default_conf` → sets `manager_util.use_unified_resolver`
- `manager_core.py`: `read_config()` / `write_config()` / `get_config()` include `use_unified_resolver` key
- `read_config()` exception fallback must include `use_unified_resolver` key to prevent `KeyError` in `write_config()`
### 4.4 manager_util.py Extension
```python
# manager_util.py
use_unified_resolver = False # New global flag (separate from use_uv)
```
---
## 5. Error Handling Strategy
```mermaid
flowchart TD
STARTUP["prestartup_script.py startup"]
STARTUP --> CHK{use_unified_resolver?}
CHK -->|No| SKIP_UDR["Skip → execute_lazy_install_script per-node pip"]
CHK -->|Yes| RAI["run_unified_resolver()"]
RAI --> STALE["cleanup_stale_tmp()<br/>Clean stale temp dirs (>1 hour old)"]
STALE --> UV_CHK{uv installed?}
UV_CHK -->|No| UV_ERR["UvNotAvailableError<br/>→ Fallback: execute_lazy_install_script per-node pip"]
UV_CHK -->|Yes| CR["collect_requirements()<br/>(ALL installed node packs)"]
CR --> CR_DIS[".disabled/ path → auto-skip"]
CR --> CR_PARSE["Parse failure → skip node pack, continue"]
CR --> CR_ENC["Encoding detection failure → assume UTF-8"]
CR --> CR_DANGER["Dangerous pattern detected → reject line + log"]
CR --> CR_DG["Downgrade blacklist → skip after version comparison"]
CR --> CL["compile_lockfile()"]
CL --> CL_CONFLICT["Conflict → report + per-node pip fallback"]
CL --> CL_TIMEOUT["TimeoutExpired 300s → per-node pip fallback"]
CL --> CL_NOFILE["Lockfile not created → failure + fallback"]
CL --> CL_TMP["Temp directory → finally block cleanup"]
CL -->|Success| IL["install_from_lockfile()"]
IL --> IL_OK["Total success → parse installed/skipped"]
IL --> IL_FAIL["Total failure → stderr + per-node pip fallback (atomic)"]
IL --> IL_TIMEOUT["TimeoutExpired 600s → fallback"]
IL_OK --> PF["PIPFixer.fix_broken()<br/>Restore torch/opencv/frontend"]
PF --> LAZY["execute_lazy_install_script()<br/>(install.py only, deps skipped)"]
```
> **Fallback model**: On resolver failure at startup, `execute_lazy_install_script()` runs normally
> (per-node pip install), providing the same behavior as if unified mode were disabled.
---
## 6. File Structure
### 6.1 New Files
```
comfyui_manager/common/unified_dep_resolver.py # Main module (~350 lines, includes sanitization/downgrade logic)
tests/test_unified_dep_resolver.py # Unit tests
```
### 6.2 Modified Files
```
comfyui_manager/glob/manager_core.py # Skip per-node pip in unified mode (2 execute_install_script locations)
comfyui_manager/common/manager_util.py # Add use_unified_resolver flag
comfyui_manager/prestartup_script.py # Config reading + startup batch resolver + execute_lazy_install_script modification
```
> **Not modified**: `comfyui_manager/legacy/manager_core.py` (legacy paths retain existing pip behavior)
---
## 7. Dependencies
| Dependency | Purpose | Notes |
|-----------|---------|-------|
| `uv` | Dependency resolution and installation | Already included in project dependencies |
| `cm_global` | pip_overrides, pip_blacklist, pip_downgrade_blacklist | Reuse existing global state (runtime dynamic assignment) |
| `manager_util` | StrictVersion, get_installed_packages, use_unified_resolver flag | Reuse existing utilities |
| `tempfile` | Temporary requirements files, mkdtemp | Standard library |
| `subprocess` | uv process execution | Standard library |
| `dataclasses` | Result data structures | Standard library |
| `re` | Input sanitization, version spec parsing, credential redaction | Standard library |
| `shutil` | uv lookup (`which`), temp directory cleanup | Standard library |
| `time` | Stale temp file age calculation | Standard library |
| `logging` | Per-step logging | Standard library |
No additional external dependencies.
---
## 8. Sequence Diagram
### Install Time + Startup Batch Resolution
```mermaid
sequenceDiagram
actor User
participant MC as manager_core
participant PS as prestartup_script
participant UDR as UnifiedDepResolver
participant UV as uv (CLI)
Note over User,MC: Install Time (immediate)
User->>MC: Install node pack X
MC->>MC: Git clone / download X
MC->>MC: Skip per-node pip (unified mode)
MC->>MC: Run X's install.py
MC-->>User: Node pack installed (deps pending)
Note over User,UV: ComfyUI Restart
User->>PS: Start ComfyUI
PS->>PS: Check use_unified_resolver
PS->>UDR: Create resolver (module scope)
UDR->>UDR: collect_requirements()<br/>(ALL installed node packs)
UDR->>UV: uv pip compile --output-file
UV-->>UDR: pinned reqs.txt
UDR->>UV: uv pip install -r
UV-->>UDR: Install result
UDR-->>PS: ResolveResult(success=True)
PS->>PS: PIPFixer.fix_broken()
PS->>PS: execute_lazy_install_script()<br/>(install.py only, deps skipped)
PS-->>User: ComfyUI ready
```
---
## 9. Test Strategy
### 9.1 Unit Tests
| Test Target | Cases |
|------------|-------|
| `collect_requirements` | Normal parsing, empty file, blacklist filtering, comment handling, remap application |
| `.disabled` filtering | Exclude node packs within `.disabled/` directory path (directory-based mechanism) |
| Input sanitization | Reject lines with `-r`, `-e`, `--find-links`, `@ file://`, path separators |
| `--index-url` / `--extra-index-url` separation | `package --index-url URL`, standalone `--index-url URL`, standalone `--extra-index-url URL`, `package --extra-index-url URL` → package spec + extra_index_urls separation |
| Downgrade blacklist | Installed + lower version request → skip, not installed → pass, same/higher version → pass |
| `compile_lockfile` | Normal compilation, conflict detection, TimeoutExpired, constraint application, --output-file verification |
| Lockfile existence verification | Failure handling when file not created despite returncode==0 |
| `extra_index_urls` passthrough | Verify `--extra-index-url` argument included in compile command |
| `install_from_lockfile` | Normal install, total failure, TimeoutExpired |
| Atomic model | On failure: installed=[], stderr populated |
| `_get_uv_cmd` | Module uv, standalone uv, embedded python (`python_embeded`), not installed |
| `_remap_package` | pip_overrides remapping, unregistered packages |
| Blacklist | torch family, torchsde, custom blacklist |
| Duplicate handling | Same package with multiple specs → all passed to uv |
| Multiple paths | Collection from multiple custom_nodes paths |
| `cm_global` defense | Default values used when `pip_blacklist` etc. not assigned |
| Concurrency | Two resolver instances each use unique temp directories |
| Credential redaction | `user:pass@host` URL masked in log output |
| `_redact_url` | `://user:pass@host``://****@host` conversion, no-credential URL passthrough |
| `cleanup_stale_tmp` | Delete stale dirs >1 hour, preserve recent dirs, ignore permission errors |
| Downgrade operators | `<=`, `==`, `<`, `~=` blocked; `>=`, `>`, `!=` pass; no spec + installed → blocked |
| `StrictVersion` comparison | Verify `manager_util.StrictVersion` is used (not `packaging.version`) |
### 9.2 Integration Tests
- End-to-end test in real uv environment
- Existing pip fallback path test
- config.ini setting toggle test
- Environment integrity verification after PIPFixer call
- lazy_mode scheduling behavior verification (Windows simulation)
- `use_uv=False` + `use_unified_resolver=True` combination test
- Large-scale dependency (50+ node packs) performance test
---
## 10. Implementation Order
1. **Phase 1**: Data classes and `collect_requirements` implementation + tests
- PackageRequirement, CollectedDeps (including extra_index_urls) and other data classes
- Blacklist/override filtering
- **Downgrade blacklist** (version comparison logic included)
- **Input sanitization** (-r, -e, @ file:// etc. rejection)
- **`--index-url` / `--extra-index-url` separation handling** (package spec + extra_index_urls)
- **`.disabled` node pack filtering**
- Defensive cm_global access (getattr pattern)
2. **Phase 2**: `compile_lockfile` implementation + tests
- uv pip compile invocation
- --output-file, --constraint, --python options
- Conflict parsing logic
3. **Phase 3**: `install_from_lockfile` implementation + tests
- uv pip install -r invocation (NOT sync)
- Install result parsing
4. **Phase 4**: Integration — startup batch + install-time skip
- `prestartup_script.py`: Module-scope startup batch resolver + `execute_lazy_install_script()` deps skip
- `manager_core.py`: Skip per-node pip in 2 `execute_install_script()` locations
- `manager_util.py`: `use_unified_resolver` flag
- Config reading (`read_unified_resolver_mode()`, `read_config()`/`write_config()`)
5. **Phase 5**: Integration tests + fallback verification + startup batch tests
---
## Appendix A: Existing Code Reference
> **Note**: Line numbers may shift as code changes, so references use symbol names (function/class names).
> Use `grep -n` or IDE symbol search for exact locations.
### remap_pip_package Location (Code Duplication Exists)
```
comfyui_manager/glob/manager_core.py — def remap_pip_package(pkg)
comfyui_manager/prestartup_script.py — def remap_pip_package(pkg)
```
Both reference `cm_global.pip_overrides` with identical logic.
The unified resolver uses `cm_global.pip_overrides` directly to avoid adding more duplication.
### cm_global Global State
```python
# Dynamically assigned in prestartup_script.py (NOT defined in cm_global.py!)
cm_global.pip_blacklist = {'torch', 'torchaudio', 'torchsde', 'torchvision'} # set
cm_global.pip_overrides = {} # dict, loaded from JSON
cm_global.pip_downgrade_blacklist = [ # list
'torch', 'torchaudio', 'torchsde', 'torchvision',
'transformers', 'safetensors', 'kornia'
]
```
> **cm_cli path**: `cm_cli/__main__.py` also independently initializes these attributes.
> If the resolver may be called from the CLI path, this initialization should also be verified.
### PIPFixer Call Pattern
```python
# Within UnifiedManager.execute_install_script() method in manager_core.py:
pip_fixer = manager_util.PIPFixer(
manager_util.get_installed_packages(),
context.comfy_path,
context.manager_files_path
)
# ... (after installation)
pip_fixer.fix_broken()
```
The unified resolver does not call PIPFixer directly.
The caller (execute_install_script) calls PIPFixer as part of the existing flow.
### is_blacklisted() Logic (Must Be Reproduced in Unified Resolver)
```python
# manager_core.py — def is_blacklisted(name)
# 1. Simple pip_blacklist membership check
# 2. pip_downgrade_blacklist version comparison:
# - Parse spec with regex r'([^<>!~=]+)([<>!~=]=?)([^ ]*)'
# - match is None (no version spec) + installed → block
# - Operator in ['<=', '==', '<', '~='] + installed version >= requested version → block
# - Version comparison uses manager_util.StrictVersion (NOT packaging.version)
```
The unified resolver's `_is_downgrade_blacklisted()` method faithfully reproduces this logic.
It uses `manager_util.StrictVersion` instead of `packaging.version.parse()` to ensure consistency with existing behavior.
### Existing Code --index-url Handling (Asymmetric)
```python
# Only exists in standalone function execute_install_script():
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()])
# UnifiedManager.execute_install_script() method does NOT have this handling
```
The unified resolver unifies both paths for consistent handling via `_split_index_url()`.
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# PRD: Unified Dependency Resolver
## 1. Overview
### 1.1 Background
ComfyUI Manager currently installs each node pack's `requirements.txt` individually via `pip install`.
This approach causes dependency conflicts where installing a new node pack can break previously installed node packs' dependencies.
**Current flow:**
```mermaid
graph LR
A1[Install node pack A] --> A2[pip install A's deps] --> A3[Run install.py]
B1[Install node pack B] --> B2[pip install B's deps] --> B3[Run install.py]
B2 -.->|May break<br/>A's deps| A2
```
### 1.2 Goal
Implement a unified dependency installation module that uses `uv` to resolve all dependencies (installed node packs + new node packs) at once.
**New flow (unified resolver mode):**
```mermaid
graph TD
subgraph "Install Time (immediate)"
A1[User installs node pack X] --> A2[Git clone / download]
A2 --> A3["Run X's install.py (if exists)"]
A3 --> A4["Skip per-node pip install<br/>(deps deferred to restart)"]
end
subgraph "ComfyUI Restart (startup batch)"
B1[prestartup_script.py] --> B2[Collect ALL installed node packs' deps]
B2 --> B3["uv pip compile → pinned requirements.txt"]
B3 --> B4["uv pip install -r → Batch install"]
B4 --> B5[PIPFixer environment correction]
end
```
> **Terminology**: In this document, "lockfile" refers to the **pinned requirements.txt** generated by `uv pip compile`.
> This is different from the `uv.lock` (TOML format) generated by `uv lock`. We use a pip-compatible workflow.
### 1.3 Scope
- Develop a new dedicated dependency resolution module
- Opt-in activation from the existing install process
- **Handles dependency resolution (deps install) only**. `install.py` execution is handled by existing logic
---
## 2. Constraints
| Item | Description |
|------|-------------|
| **uv required** | Only operates in environments where `uv` is available |
| **Independent of `use_uv` flag** | `use_unified_resolver` is separate from the existing `use_uv` flag. Even if `use_uv=False`, setting `use_unified_resolver=True` attempts resolver activation. Auto-fallback if uv is not installed |
| **Pre-validated list** | Input node pack list is assumed to be pre-verified for mutual dependency compatibility |
| **Backward compatibility** | Existing pip-based install process is fully preserved (fallback) |
| **Blacklist/overrides bypassed** | In unified mode, `pip_blacklist`, `pip_overrides`, `pip_downgrade_blacklist` are NOT applied (empty values passed). Constructor interface is preserved for future extensibility. `uv pip compile` handles all conflict resolution natively. **[DEFERRED]** Reading actual values from `cm_global` at startup is deferred to a future version — v1 always passes empty values |
| **Multiple custom_nodes paths** | Supports all paths returned by `folder_paths.get_folder_paths('custom_nodes')` |
| **Scope of application** | Batch resolver runs at **module scope** in `prestartup_script.py` (unconditionally when enabled, independent of `install-scripts.txt` existence). The 2 `execute_install_script()` locations skip per-node pip install when unified mode is active (deps deferred to restart). `execute_lazy_install_script()` is also modified to skip per-node pip install in unified mode. Other install paths such as `install_manager_requirements()`, `pip_install()` are outside v1 scope (future extension) |
| **Legacy module** | `comfyui_manager/legacy/manager_core.py` is excluded from modification. Legacy paths retain existing pip behavior |
---
## 3. Functional Requirements
### FR-1: Node Pack List and Base Dependency Input
**Input:**
- Node pack list (fullpath list of installed + to-be-installed node packs)
- Base dependencies (ComfyUI's `requirements.txt` and `manager_requirements.txt`)
**Behavior:**
- Validate each node pack path
- Exclude disabled (`.disabled`) node packs
- Detection criteria: Existence of `custom_nodes/.disabled/{node_pack_name}` **directory**
- Existing mechanism: Disabling a node pack **moves** it from `custom_nodes/` to `custom_nodes/.disabled/` (does NOT create a `.disabled` file inside the node pack)
- At resolver input time, disabled node packs should already be absent from `custom_nodes/`, so normally they won't be in `node_pack_paths`
- Defensively exclude any node pack paths that are within the `.disabled` directory
- Base dependencies are treated as constraints
- Traverse all paths from `folder_paths.get_folder_paths('custom_nodes')`
**`cm_global` runtime dependencies:**
- `cm_global.pip_overrides`, `pip_blacklist`, `pip_downgrade_blacklist` are dynamically assigned during `prestartup_script.py` execution
- In unified mode, these are **not applied** — empty values are passed to the resolver constructor
- The constructor interface accepts these parameters for future extensibility (defaults to empty when `None`)
### FR-2: Dependency List Extraction
**Behavior:**
- Parse `requirements.txt` from each node pack directory
- Encoding: Use `robust_readlines()` pattern (`chardet` detection, assumes UTF-8 if not installed)
- Package name remapping (constructor accepts `overrides` dict — **empty in v1**, interface preserved for extensibility)
- Blacklist package filtering (constructor accepts `blacklist` set — **empty in v1**, uv handles torch etc. natively)
- Downgrade blacklist filtering (constructor accepts `downgrade_blacklist` list — **empty in v1**)
- **Note**: In unified mode, `uv pip compile` resolves all version conflicts natively. The blacklist/overrides/downgrade_blacklist mechanisms from the existing pip flow are bypassed
- Strip comments (`#`) and blank lines
- **Input sanitization** (see below)
- Separate handling of `--index-url` entries (see below)
**Input sanitization:**
- Requirements lines matching the following patterns are **rejected and logged** (security defense):
- `-r`, `--requirement` (recursive include → path traversal risk)
- `-e`, `--editable` (VCS/local path install → arbitrary code execution risk)
- `-c`, `--constraint` (external constraint file injection)
- `--find-links`, `-f` (external package source specification)
- `@ file://` (local file reference → path traversal risk)
- Package names containing path separators (`/`, `\`)
- Allowed items: Package specs (`name>=version`), specs with `--index-url`, environment markers (containing `;`)
- Rejected lines are recorded in the `skipped` list with reason
**`--index-url` handling:**
- Existing code (standalone function `execute_install_script()`) parses `package_name --index-url URL` format for special handling
- **Note**: The class method `UnifiedManager.execute_install_script()` does NOT have this handling (asymmetric)
- The unified resolver **unifies both paths** for consistent handling:
- Package spec → added to the general dependency list
- `--extra-index-url URL` → passed as `uv pip compile` argument
- Separated index URLs are collected in `CollectedDeps.extra_index_urls`
- **Credential redaction**: Authentication info (`user:pass@`) in index URLs is masked during logging
**Duplicate handling strategy:**
- No deduplication is performed directly
- Different version specs of the same package are **all passed as-is** to uv
- `uv pip compile` handles version resolution (uv determines the optimal version)
**Output:**
- Unified dependency list (tracked by source node pack)
- Additional index URL list
### FR-3: uv pip compile Execution
**Behavior:**
- Generate temporary requirements file from the collected dependency list
- Execute `uv pip compile` to produce a pinned requirements.txt
- `--output-file` (required): Specify output file (outputs to stdout only if not specified)
- `--constraint`: Pass base dependencies as constraints
- `--python`: Current Python interpreter path
- `--extra-index-url`: Additional index URLs collected from FR-2 (multiple allowed)
- Resolve for the current platform (platform-specific results)
**Error handling:**
- Return conflict package report when resolution fails
- Timeout handling (300s): Explicitly catch `subprocess.TimeoutExpired`, terminate child process, then fallback
- Lockfile output file existence verification: Confirm file was actually created even when `returncode == 0`
- Temp file cleanup: Guaranteed in `finally` block. Includes stale temp file cleanup logic at next execution for abnormal termination (SIGKILL) scenarios
**Output:**
- pinned requirements.txt (file with all packages pinned to exact versions)
### FR-4: Pinned Requirements-based Dependency Installation
**Behavior:**
- Execute `uv pip install -r <pinned-requirements.txt>`
- **Do NOT use `uv pip sync`**: sync deletes packages not in the lockfile, risking removal of torch, ComfyUI's own dependencies, etc.
- Already-installed packages at the same version are skipped (default uv behavior)
- Log installation results
**Error handling:**
- `uv pip install -r` is an **atomic operation** (all-or-nothing)
- On total failure: Parse stderr for failure cause report → fallback to existing pip
- **No partial failure report** (not possible due to uv's behavior)
- `InstallResult`'s `installed`/`skipped` fields are populated by parsing uv stdout; `stderr` records failure cause (no separate `failed` field needed due to atomic model)
### FR-5: Post-install Environment Correction
**Behavior:**
- Call `PIPFixer.fix_broken()` for environment integrity correction
- Restore torch version (when change detected)
- Fix OpenCV conflicts
- Restore comfyui-frontend-package
- Restore packages based on `pip_auto_fix.list`
- **This step is already performed in the existing `execute_install_script()` flow, so the unified resolver itself doesn't need to call it**
- However, an optional call option is provided for cases where the resolver is invoked independently outside the existing flow
### FR-6: install.py Execution (Existing Flow Maintained)
**Behavior:**
- The unified resolver handles deps installation **at startup time only**
- `install.py` execution is handled by the existing `execute_install_script()` flow and runs **immediately** at install time
- Deps are deferred to startup batch resolution; `install.py` runs without waiting for deps
**Control flow specification (unified mode active):**
- `execute_install_script()`: **skip** the `requirements.txt`-based individual pip install loop entirely (deps will be resolved at next restart)
- `install.py` execution runs **immediately** as before
- At next ComfyUI restart: `prestartup_script.py` runs the unified resolver for all installed node packs
**Control flow specification (unified mode inactive / fallback):**
- Existing pip install loop runs as-is (no change)
- `install.py` execution runs **immediately** as before
### FR-7: Startup Batch Resolution
**Behavior:**
- When `use_unified_resolver=True`, **all dependency resolution is deferred to ComfyUI startup**
- At install time: node pack itself is installed (git clone, etc.) and `install.py` runs immediately, but `requirements.txt` deps are **not** installed per-request
- At startup time: `prestartup_script.py` runs the unified resolver once for all installed node packs
**Startup execution flow (in `prestartup_script.py`):**
1. At **module scope** (before `execute_startup_script()` gate): check `manager_util.use_unified_resolver` flag
2. If enabled: collect all installed node pack paths, read base requirements from `comfy_path`
3. Create `UnifiedDepResolver` with empty blacklist/overrides/downgrade_blacklist (uv handles resolution natively)
4. Call `resolve_and_install()` — collects all deps → compile → install in one batch
5. On success: set `_unified_resolver_succeeded = True`, skip per-node pip in `execute_lazy_install_script()`
6. On failure: log warning, `execute_lazy_install_script()` falls back to existing per-node pip install
7. **Note**: Runs unconditionally when enabled, independent of `install-scripts.txt` existence
**`execute_install_script()` behavior in unified mode:**
- Skip the `requirements.txt` pip install loop entirely (deps will be handled at restart)
- `install.py` execution still runs immediately
**`execute_lazy_install_script()` behavior in unified mode:**
- Skip the `requirements.txt` pip install loop (already handled by startup batch resolver)
- `install.py` execution still runs
**Windows-specific behavior:**
- Windows lazy install path also benefits from startup batch resolution
- `try_install_script()` defers to `reserve_script()` as before for non-`instant_execution=True` installs
---
## 4. Non-functional Requirements
| Item | Requirement |
|------|-------------|
| **Performance** | Equal to or faster than existing individual installs |
| **Stability** | Must not break the existing environment |
| **Logging** | Log progress and results at each step (details below) |
| **Error recovery** | Fallback to existing pip method on failure |
| **Testing** | Unit test coverage above 80% |
| **Security** | requirements.txt input sanitization (see FR-2), credential log redaction, subprocess list-form invocation |
| **Concurrency** | Prevent lockfile path collisions on concurrent install requests. Use process/thread-unique suffixes or temp directories |
| **Temp files** | Guarantee temp file cleanup on both normal and abnormal termination. Clean stale files on next execution |
### Logging Requirements
| Step | Log Level | Content |
|------|-----------|---------|
| Resolver start | `INFO` | Node pack count, total dependency count, mode (unified/pip) |
| Dependency collection | `INFO` | Collection summary (collected N, skipped N, sources N) |
| Dependency collection | `DEBUG` | Per-package collection/skip/remap details |
| `--index-url` detection | `INFO` | Detected additional index URL list |
| uv compile start | `INFO` | Execution command (excluding sensitive info) |
| uv compile success | `INFO` | Pinned package count, elapsed time |
| uv compile failure | `WARNING` | Conflict details, fallback transition notice |
| Install start | `INFO` | Number of packages to install |
| Install success | `INFO` | Installed/skipped/failed count summary, elapsed time |
| Install failure | `WARNING` | Failed package list, fallback transition notice |
| Fallback transition | `WARNING` | Transition reason, original error message |
| Overall completion | `INFO` | Final result summary (success/fallback/failure) |
> **Log prefix**: All logs use `[UnifiedDepResolver]` prefix to distinguish from existing pip install logs
---
## 5. Usage Scenarios
### Scenario 1: Single Node Pack Installation (unified mode)
```
User requests installation of node pack X
→ Git clone / download node pack X
→ Run X's install.py (if exists) — immediately
→ Skip per-node pip install (deps deferred)
→ User restarts ComfyUI
→ prestartup_script.py: Collect deps from ALL installed node packs (A,B,C,X)
→ uv pip compile resolves fully compatible versions
→ uv pip install -r for batch installation
→ PIPFixer environment correction
```
### Scenario 2: Multi Node Pack Batch Installation (unified mode)
```
User requests installation of node packs X, Y, Z
→ Each node pack: git clone + install.py — immediately
→ Per-node pip install skipped for all
→ User restarts ComfyUI
→ prestartup_script.py: Collect deps from ALL installed node packs (including X,Y,Z)
→ Single uv pip compile → single uv pip install -r
→ PIPFixer environment correction
```
### Scenario 3: Dependency Resolution Failure (Edge Case)
```
Even pre-validated lists may fail due to uv version differences or platform issues
→ uv pip compile failure → return conflict report
→ Display conflict details to user
→ Auto-execute existing pip fallback
```
### Scenario 4: uv Not Installed
```
uv unavailable detected → auto-fallback to existing pip method
→ Display uv installation recommendation to user
```
### Scenario 5: Windows Lazy Installation (unified mode)
```
Node pack installation requested on Windows
→ Node pack install deferred to startup (existing lazy mechanism)
→ On next ComfyUI startup: unified resolver runs first (batch deps)
→ execute_lazy_install_script() skips per-node pip (already resolved)
→ install.py still runs per node pack
```
### Scenario 6: Malicious/Non-standard requirements.txt
```
Node pack's requirements.txt contains `-r ../../../etc/hosts` or `-e git+https://...`
→ Sanitization filter rejects the line
→ Log rejection reason and continue processing remaining valid packages
→ Notify user of rejected item count
```
### Scenario 7: Concurrent Install Requests (unified mode)
```
User requests installation of node packs A and B nearly simultaneously from UI
→ Each request: git clone + install.py immediately, deps skipped
→ On restart: single unified resolver run handles both A and B deps together
→ No concurrency issue (single batch at startup)
```
---
## 6. Success Metrics
| Metric | Target |
|--------|--------|
| Dependency conflict reduction | 90%+ reduction compared to current |
| Install success rate | 99%+ (for compatibility-verified lists) |
| Performance | Equal to or better than existing individual installs |
| Adoption rate | 50%+ of eligible users |
---
## 7. Future Extensions
- **`cm_global` integration** [DEFERRED]: Read `pip_blacklist`, `pip_overrides`, `pip_downgrade_blacklist` from `cm_global` runtime values instead of passing empty. Constructor interface already accepts these parameters
- Lockfile caching: Reuse for identical node pack configurations
- Pre-install dependency conflict validation API: Check compatibility before installation
- Dependency tree visualization: Display dependency relationships to users
- `uv lock`-based cross-platform lockfile support (TOML format)
- `install_manager_requirements()` integration: Resolve manager's own dependencies through unified resolver
- `pip_install()` integration: Route UI direct installs through unified resolver
- Legacy module (`comfyui_manager/legacy/`) unified resolver support
---
## Appendix A: Existing Code Install Path Mapping
> This section is reference material to clarify the unified resolver's scope of application.
| Install Path | Location | v1 Applied | Notes |
|-------------|----------|------------|-------|
| `UnifiedManager.execute_install_script()` | `glob/manager_core.py` (method) | ✅ Yes | Skips per-node pip in unified mode (deps deferred to restart) |
| Standalone `execute_install_script()` | `glob/manager_core.py` (function) | ✅ Yes | Skips per-node pip in unified mode (deps deferred to restart) |
| `execute_lazy_install_script()` | `prestartup_script.py` | ✅ Yes | Skips per-node pip in unified mode (already batch-resolved) |
| Startup batch resolver | `prestartup_script.py` | ✅ Yes | **New**: Runs unified resolver once at startup for all node packs |
| `install_manager_requirements()` | `glob/manager_core.py` | ❌ No | Manager's own deps |
| `pip_install()` | `glob/manager_core.py` | ❌ No | UI direct install |
| Legacy `execute_install_script()` (2 locations) | `legacy/manager_core.py` | ❌ No | Legacy paths |