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Yes — you can use the v2 CLI with v1 projects.

<@UTH0AMTQQ> Regarding my 2nd question, this code typechecks on v2, but now pulumi is trying to delete my vpc, which is not what I want.
```const vpcId = stackRef.requireOutput('vpcId');
const vpcPrivateSubnetIds = (stackRef.requireOutput('vpcPrivateSubnetIds') as unknown) as pulumi.Output&lt;string&gt;[];
const vpcPublicSubnetIds = (stackRef.requireOutput('vpcPublicSubnetIds') as unknown) as pulumi.Output&lt;string&gt;[];
const vpc = awsx.ec2.Vpc.fromExistingIds('vpc', {
  privateSubnetIds: vpcPrivateSubnetIds,
  publicSubnetIds: vpcPublicSubnetIds,
  vpcId,
});```


I don’t know if you can cast like that because I would expect the actual type to be `Output&lt;string[]&gt;` ?

I ended up casting to Output&lt;string[]&gt; like you said, and it does work if I then wrap the rest of my code in apply, like so:
```const vpcId = stackRef.requireOutput('vpcId');
let vpcPrivateSubnetIds = stackRef.requireOutput('vpcPrivateSubnetIds') as pulumi.Output&lt;string[]&gt;;
let vpcPublicSubnetIds = stackRef.requireOutput('vpcPublicSubnetIds') as pulumi.Output&lt;string[]&gt;;

pulumi.all([vpcPrivateSubnetIds, vpcPublicSubnetIds]).apply(([priv, pub]) =&gt; {
  const vpc = awsx.ec2.Vpc.fromExistingIds('vpc', {
    privateSubnetIds: priv,
    publicSubnetIds: pub,
    vpcId,
  });
...```