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Haskell Package Version Policy (PVP)

Haskell Package Version Policy (PVP) Specification

This repository is the home of the specification of Haskell's PVP which together
with the Common Architecture for Building Applications and Tools (CABAL)
specification provides the foundational framework powering Hackage,
Haskell's central package repository.

Proposing Changes

The PVP evolves over time to adapt to changing requirements of the community.
Everyone is invited to propose and discuss changes to the policy.

Formally, the PVP is maintained by the Core Libraries Committee
together with the Hackage Trustees.

Please review the guidelines for contributing.

Building the http://pvp.haskell.org site HTML

The PVP site's static HTML files are generated by Hakyll.

You can either run

cabal run pvp-site -- rebuild
cabal run pvp-site -- server

to regenerate the HTML files, and then start a local HTTP server to preview the changes.

Alternatively, you can use Hakyll's preview mode which automatically
rebuilds the HTML files when it detects changes with

cabal run pvp-site -- watch

Languages

CSS64.6%Haskell24.4%HTML11.0%
Created April 10, 2014
Updated September 2, 2025