hercules-ci / haskell-flake

Fork for upstreaming contributions.

haskell-flake

A flake-parts module to make Haskell development simpler with Nix.

Why?

To keep flake.nix smaller (see examples below) and declarative (what vs how) by bringing a NixOS-like module system to flakes. haskell-flake simply uses callCabal2nix and shellFor under the hood.

Documentation

https://haskell.flake.page/

Examples

• Simple
  • https://github.com/srid/haskell-template/blob/master/flake.nix
  • https://github.com/fpindia/fpindia-site/blob/master/flake.nix
  • https://github.com/srid/haskell-multi-nix/blob/master/flake.nix (Demonstrates multiple local packages)
• Complex:
  • https://github.com/srid/emanote/blob/master/flake.nix
  • https://github.com/srid/ema/blob/master/flake.nix

Recommendations

• Use treefmt-nix for providing linting features like auto-formatting and hlint checks. See haskell-template for example.