Rails environment using Nix

default.nix

with (import <nixpkgs> {});

let
  rubyenv = bundlerEnv {
    name = "rb";
    # Setup for ruby gems using bundix generated gemset.nix
    inherit ruby;
    gemfile = ./Gemfile;
    lockfile = ./Gemfile.lock;
    gemset = ./gemset.nix;
  };
in stdenv.mkDerivation {
  name = "MyProject";
  version = "0.0.1";

  buildInputs = [
    stdenv
    git

    # Ruby deps
    ruby
    bundler
    bundix

    # Rails deps
    clang
    libxml2
    libxslt
    readline
    sqlite
    openssl

    rubyenv
  ];

  shellHook = ''
    export LIBXML2_DIR=${pkgs.libxml2}
    export LIBXSLT_DIR=${pkgs.libxslt}
  '';
}

Gemfile

source 'https://rubygems.org'

# OAuth
gem 'oauth2', '~> 1.0.0'
gem 'rails'

gemset.nix

{
  actionmailer = {
    dependencies = ["actionpack" "actionview" "activejob" "mail" "rails-dom-testing"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0lw1pss1mrjm7x7qcg9pvxv55rz3d994yf3mwmlfg1y12fxq00n3";
      type = "gem";
    };
    version = "4.2.7.1";
  };
  actionpack = {
    dependencies = ["actionview" "activesupport" "rack" "rack-test" "rails-dom-testing" "rails-html-sanitizer"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1ray5bvlmkimjax011zsw0mz9llfkqrfm7q1avjlp4i0kpcz8zlh";
      type = "gem";
    };
    version = "4.2.7.1";
  };
  actionview = {
    dependencies = ["activesupport" "builder" "erubis" "rails-dom-testing" "rails-html-sanitizer"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "11m2x5nlbqrw79fh6h7m444lrka7wwy32b0dvgqg7ilbzih43k0c";
      type = "gem";
    };
    version = "4.2.7.1";
  };
  activejob = {
    dependencies = ["activesupport" "globalid"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0ish5wd8nvmj7f6x1i22aw5ycizy5n1z1c7f3kyxmqwhw7lb0gaz";
      type = "gem";
    };
    version = "4.2.7.1";
  };
  activemodel = {
    dependencies = ["activesupport" "builder"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0acz0mbmahsc9mn41275fpfnrqwig5k09m3xhz3455kv90fn79v5";
      type = "gem";
    };
    version = "4.2.7.1";
  };
  activerecord = {
    dependencies = ["activemodel" "activesupport" "arel"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1lk8l6i9p7qfl0pg261v5yph0w0sc0vysrdzc6bm5i5rxgi68flj";
      type = "gem";
    };
    version = "4.2.7.1";
  };
  activesupport = {
    dependencies = ["i18n" "json" "minitest" "thread_safe" "tzinfo"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1gds12k7nxrcc09b727a458ndidy1nfcllj9x22jcaj7pppvq6r4";
      type = "gem";
    };
    version = "4.2.7.1";
  };
  arel = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1a270mlajhrmpqbhxcqjqypnvgrq4pgixpv3w9gwp1wrrapnwrzk";
      type = "gem";
    };
    version = "6.0.3";
  };
  builder = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "14fii7ab8qszrvsvhz6z2z3i4dw0h41a62fjr2h1j8m41vbrmyv2";
      type = "gem";
    };
    version = "3.2.2";
  };
  concurrent-ruby = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1kb4sav7yli12pjr8lscv8z49g52a5xzpfg3z9h8clzw6z74qjsw";
      type = "gem";
    };
    version = "1.0.2";
  };
  erubis = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1fj827xqjs91yqsydf0zmfyw9p4l2jz5yikg3mppz6d7fi8kyrb3";
      type = "gem";
    };
    version = "2.7.0";
  };
  faraday = {
    dependencies = ["multipart-post"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1kplqkpn2s2yl3lxdf6h7sfldqvkbkpxwwxhyk7mdhjplb5faqh6";
      type = "gem";
    };
    version = "0.9.2";
  };
  globalid = {
    dependencies = ["activesupport"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "11plkgyl3w9k4y2scc1igvpgwyz4fnmsr63h2q4j8wkb48nlnhak";
      type = "gem";
    };
    version = "0.3.7";
  };
  i18n = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1i5z1ykl8zhszsxcs8mzl8d0dxgs3ylz8qlzrw74jb0gplkx6758";
      type = "gem";
    };
    version = "0.7.0";
  };
  json = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1nsby6ry8l9xg3yw4adlhk2pnc7i0h0rznvcss4vk3v74qg0k8lc";
      type = "gem";
    };
    version = "1.8.3";
  };
  jwt = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0s5llb4mhpy0phzbrc4jd2jd2b91h1axy4bhci7g1bdz1w2m3a2i";
      type = "gem";
    };
    version = "1.5.4";
  };
  loofah = {
    dependencies = ["nokogiri"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "109ps521p0sr3kgc460d58b4pr1z4mqggan2jbsf0aajy9s6xis8";
      type = "gem";
    };
    version = "2.0.3";
  };
  mail = {
    dependencies = ["mime-types"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0c9vqfy0na9b5096i5i4qvrvhwamjnmajhgqi3kdsdfl8l6agmkp";
      type = "gem";
    };
    version = "2.6.4";
  };
  mime-types = {
    dependencies = ["mime-types-data"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0087z9kbnlqhci7fxh9f6il63hj1k02icq2rs0c6cppmqchr753m";
      type = "gem";
    };
    version = "3.1";
  };
  mime-types-data = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "04my3746hwa4yvbx1ranhfaqkgf6vavi1kyijjnw8w3dy37vqhkm";
      type = "gem";
    };
    version = "3.2016.0521";
  };
  mini_portile2 = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1y25adxb1hgg1wb2rn20g3vl07qziq6fz364jc5694611zz863hb";
      type = "gem";
    };
    version = "2.1.0";
  };
  minitest = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1gfzf7112vffcwamfny06pz4wr16xdihz666m1s47v077560nrll";
      type = "gem";
    };
    version = "5.9.0";
  };
  multi_json = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1wpc23ls6v2xbk3l1qncsbz16npvmw8p0b38l8czdzri18mp51xk";
      type = "gem";
    };
    version = "1.12.1";
  };
  multi_xml = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0i8r7dsz4z79z3j023l8swan7qpbgxbwwz11g38y2vjqjk16v4q8";
      type = "gem";
    };
    version = "0.5.5";
  };
  multipart-post = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "09k0b3cybqilk1gwrwwain95rdypixb2q9w65gd44gfzsd84xi1x";
      type = "gem";
    };
    version = "2.0.0";
  };
  nokogiri = {
    dependencies = ["mini_portile2" "pkg-config"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "17pjhvm4yigriizxbbpx266nnh6nckdm33m3j4ws9dcg99daz91p";
      type = "gem";
    };
    version = "1.6.8";
  };
  oauth2 = {
    dependencies = ["faraday" "jwt" "multi_json" "multi_xml" "rack"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0zaa7qnvizv363apmxx9vxa8f6c6xy70z0jm0ydx38xvhxr8898r";
      type = "gem";
    };
    version = "1.0.0";
  };
  pkg-config = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0lljiqnm0b4z6iy87lzapwrdfa6ps63x2z5zbs038iig8dqx2g0z";
      type = "gem";
    };
    version = "1.1.7";
  };
  rack = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "09bs295yq6csjnkzj7ncj50i6chfxrhmzg1pk6p0vd2lb9ac8pj5";
      type = "gem";
    };
    version = "1.6.4";
  };
  rack-test = {
    dependencies = ["rack"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0h6x5jq24makgv2fq5qqgjlrk74dxfy62jif9blk43llw8ib2q7z";
      type = "gem";
    };
    version = "0.6.3";
  };
  rails = {
    dependencies = ["actionmailer" "actionpack" "actionview" "activejob" "activemodel" "activerecord" "activesupport" "railties" "sprockets-rails"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1avd16ir7qx23dcnz1b3cafq1lja6rq0w222bs658p9n33rbw54l";
      type = "gem";
    };
    version = "4.2.7.1";
  };
  rails-deprecated_sanitizer = {
    dependencies = ["activesupport"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0qxymchzdxww8bjsxj05kbf86hsmrjx40r41ksj0xsixr2gmhbbj";
      type = "gem";
    };
    version = "1.0.3";
  };
  rails-dom-testing = {
    dependencies = ["activesupport" "nokogiri" "rails-deprecated_sanitizer"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1v8jl6803mbqpxh4hn0szj081q1a3ap0nb8ni0qswi7z4la844v8";
      type = "gem";
    };
    version = "1.0.7";
  };
  rails-html-sanitizer = {
    dependencies = ["loofah"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "138fd86kv073zqfx0xifm646w6bgw2lr8snk16lknrrfrss8xnm7";
      type = "gem";
    };
    version = "1.0.3";
  };
  railties = {
    dependencies = ["actionpack" "activesupport" "rake" "thor"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "04rz7cn64zzvq7lnhc9zqmaqmqkq84q25v0ym9lcw75j1cj1mrq4";
      type = "gem";
    };
    version = "4.2.7.1";
  };
  rake = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0m7fk7n0q459b1866cpq0gyz6904srhajrag0ybpdyl5sw4c2xff";
      type = "gem";
    };
    version = "11.2.2";
  };
  sprockets = {
    dependencies = ["concurrent-ruby" "rack"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "0jzsfiladswnzbrwqfiaj1xip68y58rwx0lpmj907vvq47k87gj1";
      type = "gem";
    };
    version = "3.7.0";
  };
  sprockets-rails = {
    dependencies = ["actionpack" "activesupport" "sprockets"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1sak0as7ka964f6zjb1w8hkvfkkbf55kpcyvh7k6nyrb6pqnwmnf";
      type = "gem";
    };
    version = "3.1.1";
  };
  thor = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "08p5gx18yrbnwc6xc0mxvsfaxzgy2y9i78xq7ds0qmdm67q39y4z";
      type = "gem";
    };
    version = "0.19.1";
  };
  thread_safe = {
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1hq46wqsyylx5afkp6jmcihdpv4ynzzq9ygb6z2pb1cbz5js0gcr";
      type = "gem";
    };
    version = "0.3.5";
  };
  tzinfo = {
    dependencies = ["thread_safe"];
    source = {
      remotes = ["https://rubygems.org"];
      sha256 = "1c01p3kg6xvy1cgjnzdfq45fggbwish8krd0h864jvbpybyx7cgx";
      type = "gem";
    };
    version = "1.2.2";
  };
}