Re: Feature Request: Sync via `wsl --exec`

On Fri, 6 Oct 2023 at 13:10, YAMAMOTO Yuji <[email protected]> wrote:
>
> Currently I have to install openssh-server and my public key on
> Linux only for Unison, which is a little cumbersome.

You shouldn't really have to do that. You can use the -socket argument
instead to start a listening server. (It should also be possible to
use inetd or similar, like systemd activation; with a different
argument. I haven't tried it, so I'm not going to explain it here.)
You can additionally use the -listen argument to specify the addresses
to listen on.

On the client, instead of ssh://user@wsl/... you can then specify
socket://wsl:port/...

I don't know how WSL networking works so make sure that you use the
-listen argument and/or configure the firewall so that the listening
port is not exposed to beyond the local machine.

> Now, I want to propose adding a new feature that enables unison
> to synchronize with the WSL VM via the `wsl --exec` command
> instead of `ssh`. `wsl --exec` can run arbitrary commands after
> automatically launching a WSL VM, which could make it feasible.

This shouldn't be too hard to accomplish (except for CI testing to
keep it working in future...) but I don't think it's really needed
because of the solution above.

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