When i try to extend a type from a federated schema i get errors from graphql-tools about not adding key directives or extend types

[dpnova]

EDIT: ignore - I spotted merger: federation
EDIT2: actually maybe the docs are out of date

schema on federated subgraph

type Pixel @key(fields: "pixelId") @key(fields: "accountUsername") {
    pixelId: String!
    accountId: Int!
    accountUuid: ID!
    accountUsername: String!
    baseUrl: String!
    isLiveAtBaseUrl: Boolean!
    pixelConfig: PixelConfig
  }

meshrc:

            - name: Pixel
              config:
                keyFields:
                  - accountUsername
                fields:
                  - name: accountUsername
                    config:
                      external: true
                extend: true
                resolveReference:
                  targetSource: ltpixel
                  targetMethod: pixel
                  args:
                    pixel:
                      pixelId: root.username
                      accountUsername: root.username

Stacktrace is below.

🕸️ =>  ✖ Unable to start GraphQL Mesh: Could not add key directives or extend types: Pixel
error: {"name":"Error","stack":"Error: Could not add key directives or extend types: Pixel
    at Object.addFederationAnnotations (/home/dpn/workspace/linktr.ee/node_modules/graphql-transform-federation/dist/transform-sdl.js:109:15)
    at Object.transformSchemaFederation (/home/dpn/workspace/linktr.ee/node_modules/graphql-transform-federation/dist/transform-federation.js:20:58)
    at FederationTransform.transformSchema (/home/dpn/workspace/linktr.ee/node_modules/@graphql-mesh/transform-federation/index.cjs.js:69:43)
    at /home/dpn/workspace/linktr.ee/node_modules/@graphql-tools/delegate/index.cjs.js:19:21
    at Array.reduce (<anonymous>)
    at Object.applySchemaTransforms (/home/dpn/workspace/linktr.ee/node_modules/@graphql-tools/delegate/index.cjs.js:18:29)
    at generateProxyingResolvers (/home/dpn/workspace/linktr.ee/node_modules/@graphql-tools/wrap/index.cjs.js:15:40)
    at Object.wrapSchema (/home/dpn/workspace/linktr.ee/node_modules/@graphql-tools/wrap/index.cjs.js:83:31)
    at /home/dpn/workspace/linktr.ee/node_modules/@graphql-mesh/merger-federation/index.cjs.js:14:40
   at Array.map (<anonymous>)
    at Object.mergeUsingFederation [as merger] (/home/dpn/workspace/linktr.ee/node_modules/@graphql-mesh/merger-federation/index.cjs.js:13:34)
    at Object.getMesh (/home/dpn/workspace/linktr.ee/node_modules/@graphql-mesh/runtime/index.cjs.js:222:39)
    at processTicksAndRejections (internal/process/task_queues.js:93:5)","message":"Could not add key directives or extend types: Pixel"}

[ardatan]

You are trying to apply federation transform to a federated schema right? I don't think it is possible with current federation transform because federation transform is used to convert nonfederated schemas to federated ones.

[dpnova]

It's not a federated schema.

But I think I found the problem... the schema has a "Subscription" type that isn't for subscriptions. it's messing with everything.