Hackage

Business Profile

Core Value Proposition

Hackage provides the Haskell community's central package archive of open source software.

Target Customer

Haskell developers, package authors/maintainers, and distribution teams who publish, manage, or install Haskell packages using Cabal and related tools.

Key Differentiator

A centralized, community-driven repository for Haskell packages with integrated Cabal tooling, versioning/curation policies (PVP), package candidates, a JSON API, and public documentation; supported by a community of volunteers with hosting from DigitalOcean and CDN by Fastly.

Implementation Timeline

Upload provides immediate visibility in the package index; package candidates allow pre-publish checks before going live. Documentation and APIs are available as part of ongoing site operations and development.

Pain Points

1Need a centralized, reliable place to publish and download Haskell packages.
2Governance and quality control of package metadata and versions via curation and the Package Versioning Policy (PVP).
3Integration with Cabal tooling (sdist packaging, upload workflow) and visibility into package metadata, history, and maintenance.

Key Features

1Upload and publish Cabal packages in standard tarball form (sdist) to the main index.
2Package candidates for previewing and testing before publishing to the main index.
3Curation controls and the x-curation field to opt out of curation; PVP guidance for versioning.
4Public package metadata, categories/tags, download counts, and maintainer information; multiple views (by category, tags, reverse dependencies, etc.).
5Hackage API serving JSON and HTML, with automatically-generated site API documentation; core operations via the hackage-security library.

Target Customer Industries

Client Results

1Users can publish libraries and programs or download and install packages using tools like cabal-install.
2Packages are versioned and curated (or uncurated) under defined policies to maintain ecosystem integrity.
3The platform provides a public, browsable index with search, filtering, and various views to understand package metadata and activity.

Competitive Advantages

1Central, community-maintained repository for Haskell packages.
2Tight integration with Cabal tooling (sdist packaging, upload workflows).
3Policy-driven curation (PVP) to improve compatibility and reliability across packages.
4Public APIs (JSON/HTML) and automated documentation for site and package data.
5Clear governance and administration processes (trustees, admins) and open contribution model.

Key Benefits

1Centralized access to Haskell packages for publishing and consumption.

2Policy-driven quality and compatibility via PVP and curation features.

3Seamless integration with Cabal tooling (sdist, upload, checks).

4Public, machine-readable API and documentation for developers and tooling.

5Community-driven governance with clear administrative and maintenance roles.

Additional Product Information

Product Description

Hackage is the Haskell community's central package archive of open source software, enabling publishing, discovery, and installation of Haskell libraries and programs via Cabal and other package managers. It provides a searchable index, package metadata, versioning/curation policies, and a JSON/HTML API, with community-driven development and hosting support.

Target Market

Haskell developers, package maintainers, and distributors seeking a centralized, standards-based repository to publish and consume Haskell packages.

Unique Value Proposition

The sole community-driven, open source package repository for Haskell that combines easy upload and publishing, curated/uncurated workflows, robust metadata, a programmable API, and Cabal-integrated tooling—backed by community support and reliable hosting/CDN.

Technical Requirements

Packages must be Cabal sdist tarballs (.tar.gz). Upload requires a Hackage username and password. Maintain metadata and follow the Package Versioning Policy (PVP). The site exposes a JSON/HTML API and recommends using the hackage-security library for core operations. Deployment and guidance are available via GitHub and cabal-devel mailing list/IRC channels.

Pricing Model

Not specified in the available content.

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