{
  description = "horizon-biohaskell";

  nixConfig = {
    extra-substituters = "https://horizon.cachix.org";
    extra-trusted-public-keys = "horizon.cachix.org-1:MeEEDRhRZTgv/FFGCv3479/dmJDfJ82G6kfUDxMSAw0=";
  };

  inputs = {
    get-flake.url = "github:ursi/get-flake";
    horizon-platform.url = "git+https://gitlab.horizon-haskell.net/package-sets/horizon-platform";
    lint-utils.url = "git+https://gitlab.nixica.dev/nix/lint-utils";
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
  };

  outputs =
    inputs@
    { self
    , flake-utils
    , get-flake
    , horizon-platform
    , lint-utils
    , nixpkgs
    , ...
    }:
    flake-utils.lib.eachSystem [ "x86_64-linux" ] (system:
    let
      pkgs = import nixpkgs { inherit system; };
    in
    with pkgs.lib;
    with pkgs.writers;
    let

      overrides = composeManyExtensions [
        (import ./overlay.nix { inherit pkgs; })
        (import ./configuration.nix { inherit pkgs; })
      ];

      legacyPackages = horizon-platform.legacyPackages.${system}.extend overrides;

      packages = filterAttrs
        (n: v: v != null
          && builtins.typeOf v == "set"
          && pkgs.lib.hasAttr "type" v
          && v.type == "derivation"
          && v.meta.broken == false)
        legacyPackages;

    in
    {
      checks = with lint-utils.outputs.linters.${system}; {
        dhall-format = dhall-format { src = self; };
        nixpkgs-fmt = nixpkgs-fmt { src = self; find = "flake.nix"; };
      };

      inherit legacyPackages;
      inherit packages;
    });
}