Alias types are not referred as alises in the resolver

[dnyg]

What happened?

When referring an alias type in the models section of the gqlgen.yml and running go run github.com/99designs/gqlgen generate I get an error if the aliased type has implementations that are not exported.

What did you expect?

I expect it to use the alias reference, and not the underlying type.

Minimal graphql.schema and models to reproduce

schema.graphql

scalar IDXID

type Query {
  id: IDXID!
}

gqlgen.yml

models:
  IDXID:
    model:
      - gqltest/pkg/identifier.IDXID

id.go

import ("io")

type i struct{}
func (i i) Prefix() string { return "i" }
type IDXID = ID[i]
type Prefixer interface {
  Prefix() string
}
type ID[T Prefixer] struct{}
func (id *ID[T]) UnmarshalGQL(v interface{}) error { return nil }
func (id ID[T]) MarshalGQL(w io.Writer) {}

With the implementation above it returns:

validation failed: packages.Load: -: # gqltest/graph
graph/generated.go:55:53: i not exported by package identifier
graph/generated.go:271:43: i not exported by package identifier
graph/generated.go:2612:139: i not exported by package identifier
graph/generated.go:2613:35: i not exported by package identifier
graph/generated.go:2618:145: i not exported by package identifier
graph/generated.go:2622:143: i not exported by package identifier
graph/generated.go:2623:41: i not exported by package identifier
graph/generated.go:2628:149: i not exported by package identifier
graph/schema.resolvers.go:14:76: i not exported by package identifier

If I make the reference exportable (change i to I), it works but the resolver looks like:

// ID is the resolver for the id field.
func (r *queryResolver) ID(ctx context.Context) (*identifier.ID[identifier.I], error) {
	panic(fmt.Errorf("not implemented: ID - id"))
}

So it uses the identifier.ID[identifier.I] instead of identifier.IDXID

I would like for gqlgen to use the aliases I have defined and imported

versions

• Latest version (master branch)
• Tried both Go 1.22.5 and 1.23.0