[tt726259]

You can also achieve this with your current system

> nix-build '<nixpkgs/nixos>' -A vm -I nixpkgs=channel:nixos-25.05 -I nixos-config=./configuration.nix

I use nixos btw

[indigodaddy]

Can this do vmdk format?

[zimbatm]

Yes, you can target VMDK, AMIs, Azure, ...

`nixos-rebuild build-image --image-variant vmware`

See https://nixos.org/manual/nixos/stable/#sec-image-nixos-rebui...

[jchw]

I don't know the answer using the built-in VM attributes (I mean I'd guess probably, but I don't know how if so) but there's always nixos-generators for making VM images. Definitely used this for deploying VMs to cloud providers, haven't tried the VMWare one yet though.

https://github.com/nix-community/nixos-generators