Allow devenv project (outputs) to be (remotely) importable in another devenv or flake

[clotodex]

Concrete usecase: I would like to use an output of a devenv project in my nixos config. General usecase: Extending projects with builds from other repositories

Right now all importable projects need to be a flake afaik. So the only way to make this work is to wrap the devenv into a flake, correct?

Are there any other ways to do this or ideas on how devenv could become compatible here?

[dsalaza4]

Also looking forward to this. I'm looking for a way to export devenv shells using outputs so they can be installed on any nix system via nix-env

[clotodex]

#1438 looks interesting as well

[domenkozar]

Also see #2092