{

description = "Purescript-Lua Flake";

inputs = {

flake-utils.url = "github:numtide/flake-utils";

nixpkgs.url = "nixpkgs/nixos-unstable";

purescript-overlay = {

url = "github:thomashoneyman/purescript-overlay";

inputs.nixpkgs.follows = "nixpkgs";

};

pslua.url = "github:purescript-lua/purescript-lua";

treefmt-nix = {

url = "github:numtide/treefmt-nix";

inputs.nixpkgs.follows = "nixpkgs";

};

};

outputs =

{

self,

nixpkgs,

flake-utils,

purescript-overlay,

pslua,

treefmt-nix,

}:

flake-utils.lib.eachDefaultSystem (

system:

let

pkgs = import nixpkgs {

inherit system;

overlays = [ purescript-overlay.overlays.default ];

};

treefmtEval = treefmt-nix.lib.evalModule pkgs ./treefmt.nix;

in

{

formatter = treefmtEval.config.build.wrapper;

checks.formatting = treefmtEval.config.build.check self;

devShell = pkgs.mkShell {

buildInputs = with pkgs; [

dhall

lua51Packages.lua

lua51Packages.luacheck

luaformatter

nixfmt-rfc-style

pslua.packages.${system}.default

purs-bin.purs-0_15_16

spago-bin.spago-0_21_0

treefmt

];

# Robust pre-commit hook: point git at the tracked .githooks/ dir

# (worktree/submodule-safe; never clobbers an existing .git/hooks).

shellHook = "git config core.hooksPath .githooks";

};

}

);

# --- Flake Local Nix Configuration ----------------------------

nixConfig = {

extra-substituters = [

"https://cache.iog.io"

"https://purescript-lua.cachix.org"

];

extra-trusted-public-keys = [

"hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ="

"purescript-lua.cachix.org-1:yLs4ei2HtnuPtzLekOrW3xdfm95+Etw15gwgyIGTayA="

];

};

}