Connection issues on Mac with `UseKeychain`

[astrozot]

I am encountering an issue which, most likely, is not strictly associated with RemoteREPL but with the SSH library used.

I am an a Mac machine and I normally connect to a remote Linux server using a password-less ssh command (in the sense that I have all the authorized_hosts machinery in place). I configured my local Mac to use the keychain for connections, so my .ssh/config files contains the following lines:

Host *
  UseKeychain yes
  AddKeysToAgent yes

When I try to use RemoteREPL on the Mac things go a little funny:

julia> connect_repl("remote")
[ Info: Using session id ad04025a-d4ba-578f-3f26-799457abb9da
┌ Warning: Tunnel output
│   errors =
│    /Users/astrozot/.ssh/config: line 6: Bad configuration option: usekeychain
│    /Users/astrozot/.ssh/config: terminating, 1 bad configuration options
│
└ @ RemoteREPL ~/.julia/packages/RemoteREPL/QNDCh/src/tunnels.jl:29
┌ Error: Exceeded maximum socket connection attempts
└ @ RemoteREPL ~/.julia/packages/RemoteREPL/QNDCh/src/tunnels.jl:85
ERROR: IOError: connect: connection refused (ECONNREFUSED)
Stacktrace:
  [1] wait_connected(x::Sockets.TCPSocket)
    @ Sockets ~/.julia/juliaup/julia-1.12.5+0.aarch64.apple.darwin14/Julia-1.12.app/Contents/Resources/julia/share/julia/stdlib/v1.12/Sockets/src/Sockets.jl:544
  [2] connect
    @ ~/.julia/julep/julia-1.12.5+0.aarch64.apple.darwin14/Julia-1.12.app/Contents/Resources/julia/share/julia/stdlib/v1.12/Sockets/src/Sockets.jl:579 [inlined]
  [3] connect
    @ ~/.julia/juliaup/julia-1.12.5+0.aarch64.apple.darwin14/Julia-1.12.app/Contents/Resources/julia/share/julia/stdlib/v1.12/Sockets/src/Sockets.jl:565 [inlined]
  [4]
    @ RemoteREPL ~/.julia/packages/RemoteREPL/QNDCh/src/tunnels.jl:78
  [5] setup_connection!(conn::RemoteREPL.Connection)
    @ RemoteREPL ~/.julia/packages/RemoteREPL/QNDCh/src/client.jl:137
  [6]
    @ RemoteREPL ~/.julia/packages/RemoteREPL/QNDCh/src/client.jl:127
  [7] Connection
    @ ~/.julia/packages/RemoteREPL/QNDCh/src/client.jl:116 [inlined]
  [8]
    @ RemoteREPL ~/.julia/packages/RemoteREPL/QNDCh/src/client.jl:536
  [9] connect_remote
    @ ~/.julia/packages/RemoteREPL/QNDCh/src/client.jl:520 [inlined]
 [10]
    @ RemoteREPL ~/.julia/packages/RemoteREPL/QNDCh/src/client.jl:493
 [11] connect_repl(host::String, port::Int64)
    @ RemoteREPL ~/.julia/packages/RemoteREPL/QNDCh/src/client.jl:484
 [12] top-level scope
    @ REPL[3]:1
Some type information was truncated. Use `show(err)` to see complete types.

Any help would be greatly appreciated!