witchcrafters/witchcraft

Health v2 · maintenance only

Adoption not part of the score

1236 stars · 60 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Witchcraft is an Elixir library providing common algebraic and categorical abstractions such as monoids, functors, applicatives, monads, arrows, and categories. It lets Elixir developers write idiomatic functional code using type classes without leaving the language.

Use cases

• use monads in elixir
• functional programming abstractions for elixir
• implement functors and applicatives in elixir
• chain computations with monadic error handling
• bring haskell-style type classes to elixir
• compose functions with arrows and categories
• work with algebraic data types in elixir

When to choose

• you want Haskell-like abstractions while staying in idiomatic Elixir
• you need monads, functors, or monoids for composable pipelines
• you want to introduce functional programming concepts to an Elixir team
• you prefer pipe-friendly operators that follow Elixir conventions

When to avoid

• your team is unfamiliar with category theory and you need simple, pragmatic code
• you need maximum performance, since abstraction layers add overhead
• you need a very actively developed library, as releases are infrequent
• your project only needs basic Elixir standard library functionality

Facets

library · maturity maintenance

programming-language programming-languages developer-tools elixir monads functors category-theory algebraic-data-types functional-programming type-classes applicative traversable algorithms

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markdown · JSON · MCP: product_card(name="witchcrafters/witchcraft")