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Yep you can establish an explicit dependency the way you have it with the use of `dependsOn`. (EDIT: assuming `basic1` changes somehow in order to trigger a change on its dependents.)

The other way, if you are interested (and slightly complicated), is to pass some input, that changes based on `basic1` changing, to `basic2` that you can then use in the `diff` function of `basic2` to compare and see if the value has changed. I forget the order of the `DynamicResource` interface functions being called but you might find <https://www.pulumi.com/blog/dynamic-providers/> helpful.

Thanks <@UDE2DCFT3>! It looks like the `check` method is called every time but there doesn't seem to be any reference to the depend. I must be missing something small.

That was my basic sample test. The console logs are a bit messy (likey because of the serialization happening). I was hoping to be able to run `pulumi up`. Then, update the value in `basic1` to `value2` and have that trigger the `diff` method of the `basic2` resources on the next `pulumi up`.

I'm also a brand new Pulumi user so I might be missing something basic.

It sounds like the simplest solution would be what you suggested and output something like a `requiresRestart` property that I could use as an input to the other resource.

&gt;  It looks like the `check` method is called every time but there doesn’t seem to be any reference to the depend
Yeah `check` is used to validate inputs and return errors if needed to stop execution. You can read more about the various interface functions here, in case you haven’t come across this doc already: <https://www.pulumi.com/docs/intro/concepts/programming-model/#check-olds-news>

`diff` is where you can return an object that indicates whether a replacement/update is required based on some input changing.

&gt;  t sounds like the simplest solution would be what you suggested and output something like a `requiresRestart` property that I could use as an input to the other resource.
While using a boolean might work the first time (going from `false` -&gt; `true`, it can only have one of two states. You could use some string output from `basic1` that changes over time based on something else, which in turn could be used within the `diff` function to compare old inputs with new inputs and therefore perform an update/replacement.

Basically, the object that you return from the `diff` function determines which function the engine will call next. That is, if it should call the `delete` , `update` or `create` function of your dynamic provider.