Elixir minimum shell.nix

shell.nix

{ pkgs ? import <nixpkgs> {} }:

with pkgs;

let
  erlang = erlangR23;
  elixir = elixir_1_11;
  nodejs = nodejs-14_x;

  inputs = [
    cacert 
    git
    erlang 
    elixir 
    nodejs 
    postgresql 
  ];

  hooks = ''
    mkdir -p .nix-mix
    mkdir -p .nix-hex
    export MIX_HOME=$PWD/.nix-mix
    export HEX_HOME=$PWD/.nix-hex
    export PATH=$MIX_HOME/bin:$PATH
    export PATH=$HEX_HOME/bin:$PATH
    export LANG=en_US.UTF-8
  ''; 

in mkShell {
 buildInputs = inputs 
  ++ lib.optional stdenv.isLinux inotify-tools
  ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
      CoreFoundation
      CoreServices
    ]);
 shellHook = hooks;
}