{ config, pkgs, ... }: { environment.systemPackages = with pkgs.unstable; [ nodejs-8_x phantomjs2 yarn nodePackages.tern nodePackages.node2nix nodePackages.nodemon nodePackages.javascript-typescript-langserver nodePackages.eslint_d # npm install may use any of these binutils gcc gnumake python2 nodePackages.node-gyp nodePackages.node-gyp-build nodePackages.node-pre-gyp ]; }