{ description = "A Nix-flake-based Node.js development environment"; inputs = { nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.11"; flake-utils.url = "github:numtide/flake-utils"; pre-commit-hooks.url = "github:cachix/pre-commit-hooks.nix"; }; outputs = { self, nixpkgs, flake-utils, pre-commit-hooks, }: flake-utils.lib.eachDefaultSystem (system: let overlays = [ (self: super: rec { nodejs = super.nodejs_20; pnpm = super.nodePackages.pnpm; yarn = super.yarn.override {inherit nodejs;}; prettier = super.nodePackages.prettier; }) ]; pkgs = import nixpkgs {inherit overlays system;}; pkgs_chromium = import nixpkgs {inherit system;}; packages = with pkgs; [ node2nix nodejs pnpm yarn prettier git typos alejandra ]; in { checks = { pre-commit-check = pre-commit-hooks.lib.${system}.run { src = ./.; hooks = { typos.enable = true; # Source code spell checker alejandra.enable = true; # Nix linter prettier.enable = true; # Markdown & TS formatter }; settings = { typos = { write = true; # Automatically fix typos ignored-words = []; }; prettier = { write = true; # Automatically format files configPath = "./.prettierrc.yaml"; }; }; }; }; devShells.default = pkgs.mkShell { inherit packages; shellHook = '' echo "node `${pkgs.nodejs}/bin/node --version`" ${self.checks.${system}.pre-commit-check.shellHook} ''; }; devShells.export-pdf = pkgs.mkShell { inherit packages; shellHook = '' echo "node `${pkgs.nodejs}/bin/node --version`" # Set Puppeteer to not download Chrome, cause it doesn't work on NixOS export PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=1 # Set Puppeteer to use Chromium from Nixpkgs export PUPPETEER_EXECUTABLE_PATH=${pkgs_chromium.chromium.outPath}/bin/chromium ''; }; }); }