# Which version pins must match when I move a ComfyUI workflow to another machine (core, frontend package, templates), and how can I force a particular frontend?

- id: art_01M5NCC4P1YVSZPGZMZKQ6ZBZF
- type: article · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T04, T08 · tags: none
- updated: 2026-10-23T21:58:48.251Z
- url: https://veyrul.com/articles/art_01M5NCC4P1YVSZPGZMZKQ6ZBZF

Problem. The same workflow looks or behaves differently after moving to another ComfyUI install. Conditions. ComfyUI core commit 9fe7ef76 and frontend repo commit 174bd880. Method. The core repository pins its UI as a Python package in requirements.txt (comfyui-frontend-package==1.57.1 at that commit, plus comfyui-workflow-templates==0.11.96 and comfyui-embedded-docs==0.5.14), so a pip install of the core's requirements fixes the UI release. The server flag --front-end-version takes owner/repo@version ('latest' or a number) and needs internet to download from GitHub releases; --front-end-root points at a local directory and overrides it. At the same moment the frontend repository's main branch already read 1.59.0, so a machine tracking 'latest' (the flag default is comfyanonymous/ComfyUI@latest) can differ from one using the pinned package (inference from the two version numbers read at different repositories). Record per machine: core commit, comfyui-frontend-package version, workf...

Problem. The same workflow looks or behaves differently after moving to another ComfyUI install. Conditions. ComfyUI core commit 9fe7ef76 and frontend repo commit 174bd880. Method. The core repository pins its UI as a Python package in requirements.txt (comfyui-frontend-package==1.57.1 at that commit, plus comfyui-workflow-templates==0.11.96 and comfyui-embedded-docs==0.5.14), so a pip install of the core's requirements fixes the UI release. The server flag --front-end-version takes owner/repo@version ('latest' or a number) and needs internet to download from GitHub releases; --front-end-root points at a local directory and overrides it. At the same moment the frontend repository's main branch already read 1.59.0, so a machine tracking 'latest' (the flag default is comfyanonymous/ComfyUI@latest) can differ from one using the pinned package (inference from the two version numbers read at different repositories). Record per machine: core commit, comfyui-frontend-package version, workflow-templates version, node-pack commits (see C3-B574-10 for snapshots) and the --front-end-* flags, and compare with extra.frontendVersion saved in the workflow. Failure modes. Offline machines cannot use a 'latest' or numbered --front-end-version; templates and embedded docs change independently of the frontend; the flag default and requirements pin are different mechanisms. Limitations. One commit pair read; the default flag semantics may have changed since. Version and date. ComfyUI 9fe7ef76, frontend 174bd880.

Curator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources.

Limitations: Two repositories were read at near-simultaneous heads; whether 1.59.0 was released as a package at that time was not checked.

Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

```json
{
  "citations": [
    {
      "url": "https://raw.githubusercontent.com/comfyanonymous/ComfyUI/9fe7ef764d0452dcc9dcb925efd076d4e68eece1/requirements.txt",
      "note": "requirements.txt; --front-end-version; --front-end-root; package.json"
    },
    {
      "url": "https://raw.githubusercontent.com/comfyanonymous/ComfyUI/9fe7ef764d0452dcc9dcb925efd076d4e68eece1/comfy/cli_args.py",
      "note": "requirements.txt; --front-end-version; --front-end-root; package.json"
    },
    {
      "url": "https://raw.githubusercontent.com/Comfy-Org/ComfyUI_frontend/174bd880787b177f408cb73752bccc1d2ca720cc/package.json",
      "note": "requirements.txt; --front-end-version; --front-end-root; package.json"
    }
  ]
}
```

Evidence claims:
- [sourced_fact] Problem. The same workflow looks or behaves differently after moving to another ComfyUI install. Conditions. ComfyUI core commit 9fe7ef76 and frontend repo commit 174bd880. Method. The core repository pins its UI as a Python package in requirements.txt (comfyui-frontend-package==1.57.1 at that commit, plus comfyui-workflow-templates==0.11.96 and comfyui-embedded-docs==0.5.14), so a pip install of the core's requirements fixes the UI release. The server flag --front-end-version takes owner/repo@version ('latest' or a number) and needs internet to download from GitHub releases; --front-end-root points at a local directory and overrides it. At the same moment the frontend repository's main branch already read 1.59.0, so a machine tracking 'latest' (the flag default is comfyanonymous/ComfyUI@latest) can differ from one using the pinned package (inference from the two version numbers read at different repositories). Record per machine: core commit, comfyui-frontend-package version, workflow-templates version, node-pack commits (see C3-B574-10 for snapshots) and the --front-end-* flags, and compare with extra.frontendVersion saved in the workflow. Failure modes. Offline machines cannot use a 'latest' or numbered --front-end-version; templates and embedded docs change independently of the frontend; the flag default and requirements pin are different mechanisms. Limitations. One commit pair read; the default flag semantics may have changed since. Version and date. ComfyUI 9fe7ef76, frontend 174bd880. · locator: requirements.txt; --front-end-version; --front-end-root; package.json · source: https://raw.githubusercontent.com/comfyanonymous/ComfyUI/9fe7ef764d0452dcc9dcb925efd076d4e68eece1/requirements.txt

Rights:
- documentation: license=unknown hosting=permitted redistribution=permitted modification=unknown training=unknown · Applies to this original summary only, not to the cited sources.

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