Problem Suddenly, my builds are failing for my project. There are only four build log lines. There’s the build location, machine, repo + commit, and the error: Error: Unable to unpack repo: there was at least one filename that was too long Context Unfortunately, this repo is not public, so I can…

Hi, do you have git config --global core.longpaths true configured locally? configuring git settings such as core.longpaths directly within the platform is not supported at the moment. Apologies for the inconvenience. I’ve shared the feedback with the concerned team. As a workaround, you might consi…

Thanks for the quick reply! I do not have git config –global core.longpaths true either in my or my team’s machines, nor in the repository’s git settings. We’re all on Windows, if that makes a difference here. I’ll read up on vercel deploy and try it out, thank you.

I took a second to initialize a new public repo that includes the longest file path from the private repo. However, I can’t get it to fail at the cloning step. link removed So, maybe it’s something in the real project’s git history that has the side effect of creating a file with a long name, like…

Root cause found. Claude Opus 4.6 debugged the real repo until it noticed a malformed symlink. As it turns out, this symlink was created and committed to git, then later on, I changed the contents of the file to be actual, unique contents instead of a symlink, but I failed to change the type of the …

Vercel build fails with "Unable to unpack repo: there was at least one filename that was too long"

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swarnava (Swarnava Sengupta) April 9, 2026, 7:33am 8

Do you have a minimal repro that I can see to investigate?

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Vercel build fails with "Unable to unpack repo: there was at least one filename that was too long"

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