SSH issue during nix-build

Question

Error text:

neo@nixos ~/F/nixpkgs> nix-build -A haskellPackages.lambdabot-trusted
these derivations will be built:
  /nix/store/wf447rqgs02yxd4p1lazfzxijmyjc46h-lambdabot-139af15.drv
  /nix/store/437rz7m2hxl2p7lyla3zml8yjhs30w3k-lambdabot-trusted-5.2.drv
building '/nix/store/wf447rqgs02yxd4p1lazfzxijmyjc46h-lambdabot-139af15.drv'...
exporting git@github.com:lambdabot/lambdabot.git (rev 139af15281e815c79596ec1336b72c9ab416ba92) into /nix/store/qjb9kx6nviq2pn8v8yvyj9gypj0nhn89-lambdabot-139af15
Initialized empty Git repository in /nix/store/qjb9kx6nviq2pn8v8yvyj9gypj0nhn89-lambdabot-139af15/.git/
Could not create directory '/home/neo/.ssh'.
Host key verification failed.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
Could not create directory '/home/neo/.ssh'.
Host key verification failed.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
Unable to checkout 139af15281e815c79596ec1336b72c9ab416ba92 from git@github.com:lambdabot/lambdabot.git.
builder for '/nix/store/wf447rqgs02yxd4p1lazfzxijmyjc46h-lambdabot-139af15.drv' failed with exit code 1
cannot build derivation '/nix/store/437rz7m2hxl2p7lyla3zml8yjhs30w3k-lambdabot-trusted-5.2.drv': 1 dependencies couldn't be built
error: build of '/nix/store/437rz7m2hxl2p7lyla3zml8yjhs30w3k-lambdabot-trusted-5.2.drv' failed

The directory /home/neo/.ssh exists (so this error makes no sense to me: Could not create directory '/home/neo/.ssh'.) and it contains the key I use to push to GitHub.

The GitHub repository it tried to connect to above is not one I own but it is public and it's only used for reading from it.

Any suggestions how to fix this?

Answer 1

What worked in the end was switching from SSH to HTTP URL.