A Haskell library for building type-safe GraphQL APIs and clients with native Haskell types.
Morpheus GraphQL is a Haskell library for building GraphQL APIs, clients, and tools. It allows developers to define GraphQL schemas using native Haskell types, automatically generating the corresponding GraphQL schema and providing compile-time validation. The library solves the problem of integrating GraphQL into Haskell applications while maintaining type safety and leveraging functional programming paradigms.
Haskell developers building GraphQL APIs or clients who want type safety and native Haskell integration. It is also suitable for teams adopting functional programming for backend services.
Developers choose Morpheus GraphQL for its seamless integration with Haskell's type system, compile-time validation, and the ability to write resolvers as native Haskell functions. It stands out by supporting both GraphQL syntax and Haskell-native type definitions, offering flexibility and robustness.
Haskell GraphQL Api, Client and Tools
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Automatically generates GraphQL schemas from Haskell types and validates queries at compile time, reducing runtime errors as shown in the type-safe examples.
Resolvers are implemented as plain Haskell functions, allowing seamless integration with existing codebases and functional patterns.
Supports both GraphQL syntax via Template Haskell and Haskell-native types, offering flexibility in API design, as demonstrated in the README examples.
Includes built-in GraphQL subscriptions through the morpheus-graphql-subscriptions package, enabling real-time features in Haskell applications.
The project is still in early development, leading to potential breaking changes and an unstable API, as acknowledged in the roadmap section.
Requires managing multiple dependencies and specific version constraints in stack.yml, which can be cumbersome and error-prone for newcomers.
Compared to GraphQL libraries in more popular languages, the Haskell ecosystem has fewer tools, integrations, and community resources, limiting out-of-the-box solutions.