VCS fails when connecting to unknown host via SSH about vcstool HOT 5 CLOSED

By default vcs runs concurrent commands for all repositories therefore it can't use stdin / a prompt "that actually works".

Have you tried to operate on the repositories sequentially with the option -w 1?

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Thanks for the fast response! the -w option works great for my purposes!
I didn't know -w existed, for anyone else who may be curious it's shown in vcs import --help:

-w N, --workers N  Number of parallel worker threads (default: 12)

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Add an arg to auto-accept the connection

Can you please verify on which native command (git clone?) you get the error message with the prompt to confirm the connection? And then check if it offers an option to automatically except the question.

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It was a git clone via ssh indeed. I believe the issue is more with ssh than git, since it's an ssh connection issue. I briefly looked over git clone --help but it doesn't mention anything about managing this ssh connection.

Maybe a better possible solution is to pre-check all the ssh urls in the .repos file and do a quick test connection to each unique host before running the git clones in parallel.
This command could work as a way to bring up the prompt if the host is not in known_hosts, but otherwise do nothing.

ssh -T [email protected] &> /dev/null

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See #113 for a workaround. Please try the proposed change and comment if that works for your use case.

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