Florian Suess
e0accbded1
During generation we parse the schema using [`gqlparser.LoadSchema`](https://github.com/vektah/gqlparser/blob/2a3d320c0f1d31f404cc36f6cce8f7f93b016682/gqlparser.go#L11) over [here](https://github.com/Khan/genqlient/blob/a4aa6d9bb0f45cb71b3b7816742172011d96fbc1/generate/parse.go#L34). As you can see `gqlparser.LoadSchema` uses it's sub directory declared [`validator.LoadSchema`](https://github.com/vektah/gqlparser/blob/2a3d320c0f1d31f404cc36f6cce8f7f93b016682/gqlparser.go#L12) - but prepends a schema with [typical implicit declared types](https://github.com/vektah/gqlparser/blob/2a3d320c0f1d31f404cc36f6cce8f7f93b016682/validator/prelude.go#L5). Full server schema introspection exposes the entire schema explicitly, hence causing a clash with this prelude schema rendering introspection derived schemas to fail. Here I just introduce a two stage schema parsing step to accomodate both implicit and explicit sdl's. -- I have also added to the FAQ as per https://github.com/Khan/genqlient/issues/4 how we can use introspection to fetch the schema when using `genqlient`. Co-authored-by: Ben Kraft <ben@benkraft.org>