Encounter error when building BrowserOS using the steps found in https://github.com/browseros-ai/BrowserOS/blob/main/CONTRIBUTING.md

[kokleong-idea]

Hi,

I am trying to build BrowserOS by following the steps found in https://github.com/browseros-ai/BrowserOS/blob/main/CONTRIBUTING.md. I run the command, python build/build.py --config build/config/release.windows.yaml --chromium-src c:/chromium/src --build, but encounter the follow error:

[ERROR] Failed: chrome\browser\resources\settings\nxtscape_page\models_data.html
[ERROR] error: git diff header lacks filename information when removing 1 leading pathname component (line 4) and

Summary: 171 applied, 1 failed
[ERROR] Failed patches:
[ERROR] - chrome\browser\resources\settings\nxtscape_page\models_data.html
[ERROR]
Build failed: Failed to apply 1 patches

Hope to hear from you soon. Please advise. Thanks

[Nikhil (shadowfax92)]

That error means one specific patch (models_data.html) couldn't apply onto your Chromium source. The build applies a set of patches pinned to an exact Chromium revision, so the usual causes are: (1) your Chromium checkout isn't the exact ref the build expects, or (2) on Windows, line-ending (CRLF) mangling of the patch file, which produces exactly that "git diff header lacks filename information" message.

Two things to try: make sure your c:/chromium/src is synced to the Chromium version this repo pins (not just latest main), and check your git autocrlf setting so patches aren't getting rewritten. This thread's also from a while back, and both the patches and the tooling have moved since — so I'd pull the latest main and retry first.

If it still fails on a fresh checkout, please open an issue with the full build log and your Chromium ref and we'll dig in. Closing as it's likely stale, but happy to help on a fresh report.