Question 1

How to deploy Morpheus GraphQL with Serverless Haskell?

Accepted Answer

Morpheus provides examples for serverless deployments, such as the Mythology API project, which uses Serverless-Haskell. You need to set up the API endpoint and configure the serverless framework accordingly, though detailed steps are not fully elaborated in the core README.

Question 2

Morpheus GraphQL vs graphql-hs: which is better for Haskell?

Accepted Answer

Morpheus GraphQL focuses on compile-time validation and native Haskell type integration, making it ideal for type-safe development. In contrast, graphql-hs might offer different abstractions; choose based on your preference for automatic schema generation versus manual control.

Question 3

How to handle authentication in a Morpheus GraphQL API?

Accepted Answer

Authentication must be implemented manually in resolvers using standard Haskell techniques, such as parsing headers or tokens. The README does not provide built-in authentication features, so you'll need to integrate with external libraries or custom logic.

Question 4

Can I use Morpheus GraphQL with web frameworks like Scotty?

Accepted Answer

Yes, Morpheus integrates easily with Scotty by defining an API endpoint that uses the interpreter function, as shown in the README example where raw requests are handled in a POST route.

Question 5

What are the performance implications of using Template Haskell in Morpheus?

Accepted Answer

Template Haskell can increase compile times and add complexity, but it enables code generation for type-safe schemas. The README mentions performance optimization as a long-term goal, so current benchmarks are not provided.

Question 6

How to generate GraphQL client code with Morpheus?

Accepted Answer

Morpheus includes a client library that converts GraphQL queries to Haskell types at compile time. Setup requires adding packages like morpheus-graphql-client and using code generation utilities, but examples are limited in the main documentation.

morpheus-graphql

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