Stable Package Sets for Haskell on Nix

Horizon Haskell is a novel infrastructure toolkit for creating and maintaining
Stable Package Sets for Haskell on Nix.
Stable Package Sets save development time by providing collections of packages known to build and work together. Horizon allows you to compute custom stable package sets for Nix and store them as reusable inputs for your Haskell projects.
Horizon is able to produce package sets using newly released, pre-release or even experimental versions of GHC. These package sets are API compatible with nixpkgs, so you can hotswap between nixpkgs haskellPackages and horizon package sets.
To see how Horizon can help you, click one of the following:
Or just read the manual.