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  1. package open-witness

    open witnesses Open witnesses are witnesses that can witness to any type. However, they cannot be constructed, they can only be generated in the IO monad. See the 2008 draft paper Witnesses and Open Witnesses (https://semantic.org/wp-content/uploads/Open-Witnesses.pdf).

  2. package openexr-write

    Library for writing images in OpenEXR HDR file format. OpenEXR allows to store pixels as floating point numbers and thus can capture high dynamic range.

  3. package openpgp-asciiarmor

    OpenPGP (RFC4880) ASCII Armor codec OpenPGP (RFC4880) ASCII Armor codec

  4. package opensource

    Haskell API Wrapper for the Open Source License API The Open Source API contains metadata regarding OSI Approved Licenses, and crosswalks that help with using and integrating this information with external sources. This library is designed to interact with that API so that users can simply build applications that are license-aware.

  5. package opentelemetry-lightstep

    The OpenTelemetry Haskell Client (Lightstep exporter) https://opentelemetry.io

  6. package opml-conduit

    Streaming parser/renderer for the OPML 2.0 format. This library implements the OPML 2.0 standard (http://dev.opml.org/spec2.html) as a conduit parser/renderer.

  7. package opt-env-conf

    Settings parsing for Haskell: command-line arguments, environment variables, and configuration values. Settings parsing for Haskell: command-line arguments, environment variables, and configuration values.

  8. package optima

    Simple command line interface arguments parser Simple command line interface arguments parser

  9. package optparse-text

    Data.Text helpers for optparse-applicative Please see README.md

  10. package packcheck

    Universal build and CI testing for Haskell packages This package contains a universal CI/build script packcheck.sh and config files designed such that you can just copy over .github/workflows/packcheck.yml, appveyor.yml, .circleci/config.yml or .cirrus.yml to your package repo and your package is CI ready in a jiffy. You can build and test packages on local machine as well. For local testing, copy packcheck.sh to your local machine, put it in your PATH, and run it from your package directory: 

    $ packcheck.sh cabal
$ packcheck.sh stack
    You can try the script on this package itself. It builds and comprehensively sanity tests a Haskell package across build tools (stack/cabal), uniformly, consistently and across all platforms (Linux/MacOS/Windows). You do not need to be familiar with any of the build tools to use it. This is also a minimal yet complete model package (with tests, benchmarks, CI already working) that can be used as a starting point to develop a new package. Beginners can use it to learn about haskell package metadata structure, benchmarks, tests, CI configs etc. See the README for comprehensive documentation.

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