README.md



Horizon Haskell Platform
horizon-haskell.net.
Horizon is a haskell package set targetting new builds of GHC.

Package Set Policy
This package set has the following policy.

GHC will advance as often as possible
Nonversioned locations (git, unversioned tarballs) are permitted to allow
GHC to advance.
The following packages must always build:

aeson
beam-postgres
composite-base
dhall
hedgehog
pandoc
persistent-postgresql
polysemy
servant
sydtest
tasty
wai-app-static
warp


Updating the Package Set
Generating the nix expressions for the package set is a two step process.

Edit the horizon.dhall file.
Generate the nix expressions with nix run develop/#horizon-gen-nix.

You can edit the horizon.dhall file in one of two ways: manually using a text
editor, or programatically using horizon-shell.