Error with viem and custom chainId (for example, a tenderly fork)

[johnpm-12]

What happened?

When using viem, and a network with a unique/custom chainId, the error NetworkNotFoundError is thrown.
The normal solution is to pass in a custom viem chain, but hre.ignition.deploy does not allow passing in a chain.
See the error message:

I propose adding a parameter or field to an existing parameter on hre.ignition.deploy that allows passing a custom viem chain.

Minimal reproduction steps

See https://github.com/johnpm-12/hardhat-ignition-tenderly-test

npm run deploySameId works as expected, because the chainId is the same as one in viem/chains

npm run deployUniqueId throws NetworkNotFoundError

Search terms

NetworkNotFoundError

[kanej]

Thanks for the reproduction repo, it really helps.
I think the additional chain parameter makes sense as a solution.

[johnpm-12]

@kanej see #783 I put up a PR solving this