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Hi

I am working with existing pulumi project where i see

```Pulumi.dev.yaml
Pulumi.test.yaml
Pulumi.prod.yaml```
and
```index.ts```
in pulumi.foo.yaml file there are some variables which are being used by index.ts
how does pulumi know where to access variable from

eg:
there is a variable present in all 3 files
Pulumi.dev.yaml
``` foo:project: dev```
Pulumi.test.yaml
``` foo:project: test```
Pulumi.prrod.yaml
``` foo:project: prod```
how does pulumi up know where to get the variable from ?

Hi Yagami.

This comes from your current _stack_. You can see which stack you're currently using by running `pulumi stack ls`:

There'll be a star next to it.

So if you're using the `test` stack you'll see `foo:project: test`

each stack will have a file associated with it which contains its config values

I was really hoping <@U01KAPTQ52Q>'s first comment was