[GH-ISSUE #13] Gemini CLI extension doesnt install. #4

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opened 2026-10-15 20:52:23 +00:00 by bsakaguchi · 4 comments
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Originally created by @Skiez6055 on GitHub (Oct 3, 2026).
Original GitHub issue: https://github.com/rehan-remade/universal-modder/issues/13

the extension installation just leaves me this error every time i try to install it

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C:\Users\pc>gemini extensions install https://github.com/rehan-remade/universal-modder Configuration file not found at C:\Users\pc\AppData\Local\Temp\gemini-extensionHeVYzh\gemini-extension.json

Originally created by @Skiez6055 on GitHub (Oct 3, 2026). Original GitHub issue: https://github.com/rehan-remade/universal-modder/issues/13 the extension installation just leaves me this error every time i try to install it <img width="1088" height="254" alt="Image" src="https://github.com/user-attachments/assets/91a09cbb-5dad-4e15-a84f-01b71094faf0" /> `C:\Users\pc>gemini extensions install https://github.com/rehan-remade/universal-modder Configuration file not found at C:\Users\pc\AppData\Local\Temp\gemini-extensionHeVYzh\gemini-extension.json`
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@skargames88-source commented on GitHub (Oct 3, 2026):

just clone the repo and start gemini inside it, give it the paths to your games in the AGENTS.md or other instructions

<!-- gh-comment-id:5966767645 --> @skargames88-source commented on GitHub (Oct 3, 2026): just clone the repo and start gemini inside it, give it the paths to your games in the AGENTS.md or other instructions
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@rehan-remade commented on GitHub (Oct 5, 2026):

Thanks for the report! I couldn't reproduce it on Linux, where the same command installs fine with Gemini CLI 0.62. The likely cause on Windows is the repo's symlinks (GEMINI.md and the skills links). If Git for Windows is set to create symlinks but your account can't, the checkout stops at the first one, and the clone has no gemini-extension.json.

Workaround:

git -c core.symlinks=false clone https://github.com/rehan-remade/universal-modder
gemini extensions install ./universal-modder

Answer y when Gemini asks to trust the folder. A "Failed to discover skills" line about .gemini/skills is harmless.

Could you run a plain git clone https://github.com/rehan-remade/universal-modder and paste its output? If it says "unable to create symlink", that confirms it. #55 adds this workaround to the README.

<!-- gh-comment-id:5986300451 --> @rehan-remade commented on GitHub (Oct 5, 2026): Thanks for the report! I couldn't reproduce it on Linux, where the same command installs fine with Gemini CLI 0.62. The likely cause on Windows is the repo's symlinks (`GEMINI.md` and the `skills` links). If Git for Windows is set to create symlinks but your account can't, the checkout stops at the first one, and the clone has no `gemini-extension.json`. Workaround: ```powershell git -c core.symlinks=false clone https://github.com/rehan-remade/universal-modder gemini extensions install ./universal-modder ``` Answer `y` when Gemini asks to trust the folder. A "Failed to discover skills" line about `.gemini/skills` is harmless. Could you run a plain `git clone https://github.com/rehan-remade/universal-modder` and paste its output? If it says "unable to create symlink", that confirms it. #55 adds this workaround to the README.
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@rehan-remade commented on GitHub (Oct 5, 2026):

Follow-up: #58 removes the symlinks altogether. The skills folders agents read are now real copies, so a normal gemini extensions install https://github.com/rehan-remade/universal-modder should work on Windows once it's merged.

<!-- gh-comment-id:5986541788 --> @rehan-remade commented on GitHub (Oct 5, 2026): Follow-up: #58 removes the symlinks altogether. The skills folders agents read are now real copies, so a normal `gemini extensions install https://github.com/rehan-remade/universal-modder` should work on Windows once it's merged.
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@rehan-remade commented on GitHub (Oct 10, 2026):

#58 removed the symlinks, so gemini extensions install https://github.com/rehan-remade/universal-modder works on Windows now. Closing; reopen if it still fails for you.

<!-- gh-comment-id:6094554181 --> @rehan-remade commented on GitHub (Oct 10, 2026): #58 removed the symlinks, so `gemini extensions install https://github.com/rehan-remade/universal-modder` works on Windows now. Closing; reopen if it still fails for you.
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rehan-remade/universal-modder#4
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