Deployer 7 Host staging not found

[jasperf]

I ran dep ssh staging and got

In HostCollection.php line 20:
                             
  Host "staging" not found.  

I am using this for the hosts path in my deploy.yml file:

hosts:
  prod:
    remote_user: forge
    hostname: 'domain.com'
    deploy_path: '~/{{hostname}}'
  staging:
    remote_user: forge
    hostname: 'staging.domain.com'
    deploy_path: '~/{{hostname}}'

And I am using latest Deployer:

dep --version
Deployer 7.0.0-master

and when I check config it only loads localhost for some reason ..

ep config
{
    "@localhost": {
        "alias": "@localhost",
        "hostname": "@localhost"
    }
}

and dep is loaded from global package, not project package:

 jasper@MacMini  ~/code/domain.com/domain.com   php8  which dep
/Users/jasper/.composer/vendor/bin/dep

I also tried full domain staging.domain.com. No dice. Do I need to add another option here?

[jasperf]

Deployer does not read deploy.yml. It does read deploy.yaml