Hi there Creating vm's using Pulumi, I can see that there is AWS, Azure and Google Cloud templates. What if I want to create a "custom" vm, using other tools like qemu or multipass on prem, how would you go about doing that?

Is there a terraform provider for your OnPrem solution?

Nope, just want to get started creating some vm using multipass or other?

https://github.com/larstobi/terraform-provider-multipass there is at least one O/S provider for multipass, which means you can create a pulumi bridge. If you're not interested in writing your own provider bridge ( it's not trivial ), then I'd suggest using an existing cloud provider if you just want low friction.

Cool I will look into that, thanks

As @cuddly-computer-18851 has suggested, you’ll need a provider. If there’s a Terraform provider, then you can bridge it into a Pulumi provider. If there’s already a Pulumi provider, then you’re golden.