Warning about garbage collector

[abbradar]

When I run nixops deploy, I get:

building all machine configurations...
warning: you did not specify '--add-root'; the result might be removed by the garbage collector
dev1> copying closure...
...

This warning seems to be caused by NixOps internals.

[hehongbo]

same here.

NixOps 2.0.0-pre-7220cbd