NixOS custom nodePackages

default.nix

{ pkgs, nodejs, stdenv }:

let
  nodePackages = import ./composition.nix {
    inherit pkgs nodejs;
    inherit (stdenv.hostPlatform) system;
  };
in
  nodePackages

generate.sh

#!/usr/bin/env nix-shell
#! nix-shell -i bash -p nodePackages.node2nix
set -eu -o pipefail

rm -f node-env.nix
node2nix --nodejs-10 -i packages.json -o packages.nix -c composition.nix

home.nix

home.packages = let
  myNodePackages = import ../../custom/node-packages {
    inherit pkgs nodejs stdenv;
  };
in [
  nodejs
  (with myNodePackages; [
    eslint
    typescript-language-server
    ...
  ])
];

packages.json

[
  "eslint"
, "eslint-config-prettier"
, "eslint-plugin-prettier"
, "javascript-typescript-langserver"
, "typescript"
, "typescript-language-server"
, "prettier"
]