[BUG] [Haskell] Missing ToHttpApiData/FromHttpApiData for [Int]

Nested query arrays only use QueryList for the outermost array:

type TestAPI
    =    "v1" :> "route" :> QueryParam "connections" (QueryList 'CommaSeparated ([Int])) :> Verb 'GET 200 '[JSON] () -- 'test' route
    :<|> Raw 

resulting in missing instances for [a]:

lib\Test\API.hs:170:11: error:
    * No instance for (ToHttpApiData [Int])
        arising from a use of `client'
    * In the expression: client (Proxy :: Proxy TestAPI)
      In a pattern binding:
        ((coerce -> test) :<|> _) = client (Proxy :: Proxy TestAPI)
      In an equation for `createTestClient':
          createTestClient
            = TestBackend {..}
            where
                ((coerce -> test) :<|> _) = client (Proxy :: Proxy TestAPI)
    |
170 |      _) = client (Proxy :: Proxy TestAPI)
    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

lib\Test\API.hs:214:57: error:
    * Could not deduce (FromHttpApiData [Int])
        arising from a use of `serve'
      from the context: (MonadIO m, MonadThrow m)
        bound by the type signature for:
                   runTestMiddlewareServer :: forall (m :: * -> *).
                                              (MonadIO m, MonadThrow m) =>
                                              Config
                                              -> Middleware
                                              -> TestBackend (ExceptT ServerError IO)
                                              -> m ()
        at lib\Test\API.hs:(206,1)-(208,73)
    * In the second argument of `($)', namely
        `serve (Proxy :: Proxy TestAPI) (serverFromBackend backend)'
      In the second argument of `($)', namely
        `middleware
           $ serve (Proxy :: Proxy TestAPI) (serverFromBackend backend)'
      In the second argument of `($)', namely
        `Warp.runSettings warpSettings
           $ middleware
               $ serve (Proxy :: Proxy TestAPI) (serverFromBackend backend)'
    |
214 |   liftIO $ Warp.runSettings warpSettings $ middleware $ serve (Proxy :: Proxy TestAPI) (serverFromBackend backend)
    |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Here is a minimal spec to reproduce the issue:

{
    "consumes": [
        "application/json"
    ],
    "host": "localhost",
    "info": {
        "description": "test",
        "title": "test",
        "version": "1.0.0"
    },
    "paths": {
        "/v1/route/": {
            "get": {
                "description": "test",
                "operationId": "test",
                "parameters": [{
                    "description": "connected",
                    "in": "query",
                    "items": {
                        "collectionFormat": "pipes",
                        "items": {
                            "format": "int32",
                            "type": "integer"
                        },
                        "maxItems": 2,
                        "minItems": 2,
                        "type": "array",
                        "uniqueItems": true
                    },
                    "maxItems": 100,
                    "name": "connections",
                    "type": "array",
                    "uniqueItems": true
                }],
                "responses": {
                    "200": {
                        "description": "test",
                        "examples": {
                            "application/json": [
                                1,
                                2,
                                3
                            ]
                        }
                    }
                },
                "summary": "test",
                "x-cached-seconds": 3600
            }
        }
    },
    "produces": [
        "application/json"
    ],
    "schemes": [
        "https"
    ],
    "swagger": "2.0"
}

Start with the TestAPI definition and the generated client/server uses in lib\Test\API.hs, focusing on the QueryParam "connections" declaration and its client and serve entry points. Reproduce the compilation errors with the nested [Int] query array; done means the generated Haskell code provides the required ToHttpApiData and FromHttpApiData instances and compiles.