Monthly Downloads: 62
Programming language: Haskell
License: Mozilla Public License 2.0
Tags: Configuration     Conferer    
Latest version: v0.4.1.0
Add another 'conferer' Package



Hackage GitHub Workflow Status Hackage-Deps License

Most user oriented information you can find in the website: conferer.ludat.io

Testing and CI

We have about 50 tests, mostly for the conferer package since it's the one with most of the logic both sources and FromConfig packages also have some tests but they are not tested as throughtly.

To run them do:

stack test # for everything
stack test conferer # to run only core library tests
stack test conferer-source-json # to run json source tests
stack test conferer-warp # to run warp fromConfig tests

Our ci is pretty intense as well we test with the last 5 versions of ghc (oldest being 8.0.2) and with the nightly provided by stack and on every platform (windows, linux and macOS).

So I'm pretty confident that if someone introduces a platform dependent bug we'll catch it.


This library is released under the Mozilla Public License 2.0 which is a weak copyleft license.

As usual you can use this library for anything you want, the only difference is that if you modify the source and distribute you must publish your modifications.

You can use it for privative software, GPL'd code, in house development and distribute it as much as you like.


It's pretty simple, if you want to add a feature that already has a ticket just go ahead and create a PR referencing the ticket.

If you want to add a new feature that doesn't have a ticket then you can add a ticket first to validate that the feature makes sense and then create a PR (you can create the PR without the ticket if you feel like it).


Most of the time I use ghcid to run tests:

ghcid -c='stack repl --test --main-is conferer-aeson:test:specs' --run=':main' --warnings

There you can replace conferer-aeson with the right package and that will run those tests, and also reload if any of the other packages change.

The website

The website is based on docusaurus so it's mostly generated from the markdown stored in the /docs directory and built and deployed using netlify.

Publishing new versions

Publishing a new version is done using stack and parallel, beware that packages in the examples directory shouldn't be published.

But sadly versions need to be bumped by hand following PVP.

So to actually publish a new version of packages:

find -name '*.cabal' | grep -v example | parallel --tty stack upload {//}

Future maybe things

  • Interpolate keys with other keys: {a: "db", b: "${a}_thing"}, getting b will give "db_thing" (maybe) even in different levels of configuration
  • A LOT of sources
  • A LOT of FromConfig implementations

*Note that all licence references and agreements mentioned in the conferer README section above are relevant to that project's source code only.