# graninas/software-design-in-haskell

Software Design in Haskell. A structured set of materials. How to build real-world applications in Haskell.

Repository: https://github.com/graninas/software-design-in-haskell
Canonical: https://ross.abutalabs.com/products/software-design-in-haskell
Language: Haskell
License Family: other
Last push: 2024-12-18T11:27:13+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 2450, "days_push": 623, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1112, forks 69 (observed 2026-08-28T04:03:37.904685+00:00)

## What it is
A curated, structured collection of materials on software design and architecture in Haskell, covering architectural patterns, design principles, best practices, books, and production experience reports. It serves as a companion resource to Alexander Granin's book 'Functional Design and Architecture'.

## Use cases
- learn how to structure real-world Haskell applications
- compare free monads, final tagless, mtl, and effect systems
- find Haskell design patterns and best practices
- discover books on functional design and architecture
- find examples of Haskell used in production
- learn the ReaderT and service handle patterns

## When to choose
- you are designing a non-trivial Haskell application and need architectural guidance
- you want a curated reading list on functional software design
- you are evaluating architectural approaches like free monads vs mtl vs effect systems

## When to avoid
- you need a runnable library or framework rather than learning materials
- you are looking for beginner Haskell tutorials rather than architecture topics
- you need officially licensed or maintained documentation

## Facets
- artifact type: learning-resource
- maturity: active
- function: documentation
- domain: tutorials, programming-languages, developer-tools
- platform: -
- tags: haskell, software-architecture, design-patterns, functional-programming, awesome-list

## Member repositories
- graninas/software-design-in-haskell (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:37.904685+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:42:43.403511+00:00, confidence not recorded.
  - readme: https://github.com/graninas/software-design-in-haskell (fetched 2026-08-28T04:03:37.904685+00:00, sha 1b1749522a67)
- Data as of 2026-08-30T08:39:29.467469+00:00.