iroh-cli: allow --switch outside of iroh console

[KAAtheWiseGit]

Currently, --switch flags don't work outside of the Iroh CLI console.

I want to suggest setting env variables for IROH_AUTHOR and IROH_DOC when a command with --switch is ran in the terminal.

Would the Iroh team be interested in a PR implementing this?

[flub]

https://github.com/n0-computer/iroh/blob/main/iroh-cli/src/config.rs#L25-L26

[flub]

Admittedly this is not documented AFAIK, this is being changed in n0-computer/iroh.computer#166

[KAAtheWiseGit]

@flub got it! In this case, I'll rewrite this issue into --switch support. From what I can see, this part isn't supported.

[Frando]

I don't think it is possible for a process set environment variables in the surrounding shell?

If we wanted to support --switch for non-console CLI, we'd have to store and read the author and doc ids ourselves.. We decided against that, because we wanted the CLI commands to be predictable and only depend on the explicitly set shell environment and not on transient state in the iroh data dir.

[KAAtheWiseGit]

Oh, right, I was working with Nushell and completely forgot it wasn't possible to set environmental variables in standalone commands.

I totally agree with not storing per-process data, it's too opaque. Will close the issue, as I don't see a good way to implement switching either.