Aut installation issue information

[vkbytes]

While installing the aut commandline you may see this issue where the key to github.com cannot be determined and your installation will be stuck and will error out with the following error

The authenticity of host 'github.com (140.82.121.4)' can't be established.'
ED25519 key fingerprint is SHA256:+DiY3wvvV6TuJJhbpZisF/zLDA0zPMSvHdkr4UvCOqU.
This key is not known by any other names
⣽ determining package name from 'git+ssh://git@github.com/autonity/aut.git'
  error: subprocess-exited-with-error

  × git clone --filter=blob:none --quiet 'ssh://****@github.com/autonity/aut.git' /private/var/folders/bs/tnv_697n0_x1nt1f1gc314yh0000gn/T/pip-req-build-fs7n3791 did not run successfully.
  │ exit code: 128
  ╰─> [5 lines of output]
      Host key verification failed.
      fatal: Could not read from remote repository.

      Please make sure you have the correct access rights
      and the repository exists.
      [end of output]

[vkbytes]

The quick fix to this problem is to scan all the github keys and add them to your ~/.ssh/known_hosts file. This can be done with ssh-keyscan this little information is not there on the docs page but I guess people can come across this issue on every new installation. To fix this run:

ssh-keyscan github.com >> ~/.ssh/known_hosts

You should see an output similar to

ssh-keyscan github.com >> ~/.ssh/known_hosts
# github.com:22 SSH-2.0-babeld-1614812c
# github.com:22 SSH-2.0-babeld-1614812c
# github.com:22 SSH-2.0-babeld-1614812c
# github.com:22 SSH-2.0-babeld-1614812c

[noandrea]

thanks @vkbytes, the issue you are describing may appear when using the ssh url of the repo (git+ssh://git@...) instead of the https url as described in the project's README:

pipx install git+https://github.com/autonity/aut.git