diff --git a/pkgs/applications/editors/jupyter-kernels/iruby/Gemfile b/pkgs/applications/editors/jupyter-kernels/iruby/Gemfile
new file mode 100644
index 000000000000..c3f096edcad1
--- /dev/null
+++ b/pkgs/applications/editors/jupyter-kernels/iruby/Gemfile
@@ -0,0 +1,6 @@
+source 'https://rubygems.org'
+gem 'sensu'
+gem 'iruby'
+gem 'cztop'
+gem 'ffi-rzmq'
+gem 'rbczmq'
diff --git a/pkgs/applications/editors/jupyter-kernels/iruby/Gemfile.lock b/pkgs/applications/editors/jupyter-kernels/iruby/Gemfile.lock
new file mode 100644
index 000000000000..89f60a6dbdce
--- /dev/null
+++ b/pkgs/applications/editors/jupyter-kernels/iruby/Gemfile.lock
@@ -0,0 +1,119 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.6.0)
+      public_suffix (>= 2.0.2, < 4.0)
+    amq-protocol (2.0.1)
+    amqp (1.6.0)
+      amq-protocol (>= 2.0.1)
+      eventmachine
+    bond (0.5.1)
+    childprocess (0.5.8)
+      ffi (~> 1.0, >= 1.0.11)
+    cookiejar (0.3.3)
+    czmq-ffi-gen (0.15.0)
+      ffi (~> 1.9.10)
+    cztop (0.13.1)
+      czmq-ffi-gen (~> 0.15.0)
+    data_uri (0.1.0)
+    em-http-request (1.1.5)
+      addressable (>= 2.3.4)
+      cookiejar (!= 0.3.1)
+      em-socksify (>= 0.3)
+      eventmachine (>= 1.0.3)
+      http_parser.rb (>= 0.6.0)
+    em-http-server (0.1.8)
+      eventmachine
+    em-socksify (0.3.2)
+      eventmachine (>= 1.0.0.beta.4)
+    em-worker (0.0.2)
+      eventmachine
+    eventmachine (1.2.7)
+    ffi (1.9.21)
+    ffi-rzmq (2.0.7)
+      ffi-rzmq-core (>= 1.0.7)
+    ffi-rzmq-core (1.0.7)
+      ffi
+    http_parser.rb (0.6.0)
+    iruby (0.3)
+      bond (~> 0.5)
+      data_uri (~> 0.1)
+      mimemagic (~> 0.3)
+      multi_json (~> 1.11)
+    mimemagic (0.3.3)
+    multi_json (1.13.1)
+    oj (2.18.1)
+    parse-cron (0.1.4)
+    public_suffix (3.0.3)
+    rbczmq (1.7.9)
+    sensu (1.6.2)
+      em-http-request (= 1.1.5)
+      em-http-server (= 0.1.8)
+      eventmachine (= 1.2.7)
+      parse-cron (= 0.1.4)
+      sensu-extension (= 1.5.2)
+      sensu-extensions (= 1.10.0)
+      sensu-json (= 2.1.1)
+      sensu-logger (= 1.2.2)
+      sensu-redis (= 2.4.0)
+      sensu-settings (= 10.14.0)
+      sensu-spawn (= 2.5.0)
+      sensu-transport (= 8.2.0)
+    sensu-extension (1.5.2)
+      eventmachine
+    sensu-extensions (1.10.0)
+      sensu-extension
+      sensu-extensions-check-dependencies (= 1.1.0)
+      sensu-extensions-debug (= 1.0.0)
+      sensu-extensions-json (= 1.0.0)
+      sensu-extensions-occurrences (= 1.2.0)
+      sensu-extensions-only-check-output (= 1.0.0)
+      sensu-extensions-ruby-hash (= 1.0.0)
+      sensu-json (>= 1.1.0)
+      sensu-logger
+      sensu-settings
+    sensu-extensions-check-dependencies (1.1.0)
+      sensu-extension
+    sensu-extensions-debug (1.0.0)
+      sensu-extension
+    sensu-extensions-json (1.0.0)
+      sensu-extension
+    sensu-extensions-occurrences (1.2.0)
+      sensu-extension
+    sensu-extensions-only-check-output (1.0.0)
+      sensu-extension
+    sensu-extensions-ruby-hash (1.0.0)
+      sensu-extension
+    sensu-json (2.1.1)
+      oj (= 2.18.1)
+    sensu-logger (1.2.2)
+      eventmachine
+      sensu-json
+    sensu-redis (2.4.0)
+      eventmachine
+    sensu-settings (10.14.0)
+      parse-cron
+      sensu-json (>= 1.1.0)
+    sensu-spawn (2.5.0)
+      childprocess (= 0.5.8)
+      em-worker (= 0.0.2)
+      eventmachine
+      ffi (= 1.9.21)
+    sensu-transport (8.2.0)
+      amq-protocol (= 2.0.1)
+      amqp (= 1.6.0)
+      eventmachine
+      sensu-redis (>= 1.0.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  cztop
+  ffi-rzmq
+  iruby
+  rbczmq
+  sensu
+
+BUNDLED WITH
+   1.17.2
diff --git a/pkgs/applications/editors/jupyter-kernels/iruby/default.nix b/pkgs/applications/editors/jupyter-kernels/iruby/default.nix
new file mode 100644
index 000000000000..260a614fe5c0
--- /dev/null
+++ b/pkgs/applications/editors/jupyter-kernels/iruby/default.nix
@@ -0,0 +1,17 @@
+{ lib
+, bundlerApp
+}:
+
+bundlerApp {
+  pname = "iruby";
+  gemdir = ./.;
+  exes = [ "iruby" ];
+
+  meta = with lib; {
+    description = "Ruby kernel for Jupyter";
+    homepage    = "https://github.com/SciRuby/iruby";
+    license     = licenses.mit;
+    maintainers = [ maintainers.costrouc ];
+    platforms   = platforms.unix;
+  };
+}
diff --git a/pkgs/applications/editors/jupyter-kernels/iruby/gemset.nix b/pkgs/applications/editors/jupyter-kernels/iruby/gemset.nix
new file mode 100644
index 000000000000..1ba77a058ea2
--- /dev/null
+++ b/pkgs/applications/editors/jupyter-kernels/iruby/gemset.nix
@@ -0,0 +1,429 @@
+{
+  addressable = {
+    dependencies = ["public_suffix"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0bcm2hchn897xjhqj9zzsxf3n9xhddymj4lsclz508f4vw3av46l";
+      type = "gem";
+    };
+    version = "2.6.0";
+  };
+  amq-protocol = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1rpn9vgh7y037aqhhp04smihzr73vp5i5g6xlqlha10wy3q0wp7x";
+      type = "gem";
+    };
+    version = "2.0.1";
+  };
+  amqp = {
+    dependencies = ["amq-protocol" "eventmachine"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0kbrqnpjgj9v0722p3n5rw589l4g26ry8mcghwc5yr20ggkpdaz9";
+      type = "gem";
+    };
+    version = "1.6.0";
+  };
+  bond = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1r19ifc4skyl2gxnifrxa5jvbbay9fb2in79ppgv02b6n4bhsw90";
+      type = "gem";
+    };
+    version = "0.5.1";
+  };
+  childprocess = {
+    dependencies = ["ffi"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1lv7axi1fhascm9njxh3lx1rbrnsm8wgvib0g7j26v4h1fcphqg0";
+      type = "gem";
+    };
+    version = "0.5.8";
+  };
+  cookiejar = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0q0kmbks9l3hl0wdq744hzy97ssq9dvlzywyqv9k9y1p3qc9va2a";
+      type = "gem";
+    };
+    version = "0.3.3";
+  };
+  czmq-ffi-gen = {
+    dependencies = ["ffi"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1ngsd1yxiayd50v402vwhmq7ma9ang6pcba5kqiwq7smpdvfmbmp";
+      type = "gem";
+    };
+    version = "0.15.0";
+  };
+  cztop = {
+    dependencies = ["czmq-ffi-gen"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "12xcz7g42dbp2ryhcwdm2ykj7bmwfhjhla296hy18g7a09zlfnz7";
+      type = "gem";
+    };
+    version = "0.13.1";
+  };
+  data_uri = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0fzkxgdxrlbfl4537y3n9mjxbm28kir639gcw3x47ffchwsgdcky";
+      type = "gem";
+    };
+    version = "0.1.0";
+  };
+  em-http-request = {
+    dependencies = ["addressable" "cookiejar" "em-socksify" "eventmachine" "http_parser.rb"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "13rxmbi0fv91n4sg300v3i9iiwd0jxv0i6xd0sp81dx3jlx7kasx";
+      type = "gem";
+    };
+    version = "1.1.5";
+  };
+  em-http-server = {
+    dependencies = ["eventmachine"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0y8l4gymy9dzjjchjav90ck6has2i2zdjihlhcyrg3jgq6kjzyq5";
+      type = "gem";
+    };
+    version = "0.1.8";
+  };
+  em-socksify = {
+    dependencies = ["eventmachine"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0rk43ywaanfrd8180d98287xv2pxyl7llj291cwy87g1s735d5nk";
+      type = "gem";
+    };
+    version = "0.3.2";
+  };
+  em-worker = {
+    dependencies = ["eventmachine"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0z4jx9z2q5hxvdvik4yp0ahwfk69qsmdnyp72ln22p3qlkq2z5wk";
+      type = "gem";
+    };
+    version = "0.0.2";
+  };
+  eventmachine = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0wh9aqb0skz80fhfn66lbpr4f86ya2z5rx6gm5xlfhd05bj1ch4r";
+      type = "gem";
+    };
+    version = "1.2.7";
+  };
+  ffi = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0c2dl10pi6a30kcvx2s6p2v1wb4kbm48iv38kmz2ff600nirhpb8";
+      type = "gem";
+    };
+    version = "1.9.21";
+  };
+  ffi-rzmq = {
+    dependencies = ["ffi-rzmq-core"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "14a5kxfnf8l3ngyk8hgmk30z07aj1324ll8i48z67ps6pz2kpsrg";
+      type = "gem";
+    };
+    version = "2.0.7";
+  };
+  ffi-rzmq-core = {
+    dependencies = ["ffi"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0amkbvljpjfnv0jpdmz71p1i3mqbhyrnhamjn566w0c01xd64hb5";
+      type = "gem";
+    };
+    version = "1.0.7";
+  };
+  "http_parser.rb" = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "15nidriy0v5yqfjsgsra51wmknxci2n2grliz78sf9pga3n0l7gi";
+      type = "gem";
+    };
+    version = "0.6.0";
+  };
+  iruby = {
+    dependencies = ["bond" "data_uri" "mimemagic" "multi_json"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1wdf2c0x8y6cya0n3y0p3p7b1sxkb2fdavdn2k58rf4rs37s7rzn";
+      type = "gem";
+    };
+    version = "0.3";
+  };
+  mimemagic = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "04cp5sfbh1qx82yqxn0q75c7hlcx8y1dr5g3kyzwm4mx6wi2gifw";
+      type = "gem";
+    };
+    version = "0.3.3";
+  };
+  multi_json = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1rl0qy4inf1mp8mybfk56dfga0mvx97zwpmq5xmiwl5r770171nv";
+      type = "gem";
+    };
+    version = "1.13.1";
+  };
+  oj = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "147whmq8h2n04chskl3v4a132xhz5i6kk6vhnz83jwng4vihin5f";
+      type = "gem";
+    };
+    version = "2.18.1";
+  };
+  parse-cron = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "02fj9i21brm88nb91ikxwxbwv9y7mb7jsz6yydh82rifwq7357hg";
+      type = "gem";
+    };
+    version = "0.1.4";
+  };
+  public_suffix = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "08q64b5br692dd3v0a9wq9q5dvycc6kmiqmjbdxkxbfizggsvx6l";
+      type = "gem";
+    };
+    version = "3.0.3";
+  };
+  rbczmq = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1bqr44m2nb61smza6y5cahp09hk16lsn0z3wpq9g5zpr9nhp50fx";
+      type = "gem";
+    };
+    version = "1.7.9";
+  };
+  sensu = {
+    dependencies = ["em-http-request" "em-http-server" "eventmachine" "parse-cron" "sensu-extension" "sensu-extensions" "sensu-json" "sensu-logger" "sensu-redis" "sensu-settings" "sensu-spawn" "sensu-transport"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1rxv6yj63nkxlzmmqk6qpfpcvrbar9s4sd4kgfb5zsv9bw7236cr";
+      type = "gem";
+    };
+    version = "1.6.2";
+  };
+  sensu-extension = {
+    dependencies = ["eventmachine"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0bpizp4n01rv72cryjjlrbfxxj3csish3mkxjzdy4inpi5j5h1dw";
+      type = "gem";
+    };
+    version = "1.5.2";
+  };
+  sensu-extensions = {
+    dependencies = ["sensu-extension" "sensu-extensions-check-dependencies" "sensu-extensions-debug" "sensu-extensions-json" "sensu-extensions-occurrences" "sensu-extensions-only-check-output" "sensu-extensions-ruby-hash" "sensu-json" "sensu-logger" "sensu-settings"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "04v221qjv8qy3jci40i66p63ig5vrrh0dpgmf1l8229x5m7bxrsg";
+      type = "gem";
+    };
+    version = "1.10.0";
+  };
+  sensu-extensions-check-dependencies = {
+    dependencies = ["sensu-extension"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1hc4kz7k983f6fk27ikg5drvxm4a85qf1k07hqssfyk3k75jyj1r";
+      type = "gem";
+    };
+    version = "1.1.0";
+  };
+  sensu-extensions-debug = {
+    dependencies = ["sensu-extension"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "11abdgn2kkkbvxq4692yg6a27qnxz4349gfiq7d35biy7vrw34lp";
+      type = "gem";
+    };
+    version = "1.0.0";
+  };
+  sensu-extensions-json = {
+    dependencies = ["sensu-extension"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1wnbn9sycdqdh9m0fhszaqkv0jijs3fkdbvcv8kdspx6irbv3m6g";
+      type = "gem";
+    };
+    version = "1.0.0";
+  };
+  sensu-extensions-occurrences = {
+    dependencies = ["sensu-extension"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0lx5wsbblfs0rvkxfg09bsz0g2mwmckrhga7idnarsnm8m565v1v";
+      type = "gem";
+    };
+    version = "1.2.0";
+  };
+  sensu-extensions-only-check-output = {
+    dependencies = ["sensu-extension"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0ds2i8wd4ji9ifig2zzr4jpxinvk5dm7j10pvaqy4snykxa3rqh3";
+      type = "gem";
+    };
+    version = "1.0.0";
+  };
+  sensu-extensions-ruby-hash = {
+    dependencies = ["sensu-extension"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1xyrj3gbmslbivcd5qcmyclgapn7qf7f5jwfvfpw53bxzib0h7s3";
+      type = "gem";
+    };
+    version = "1.0.0";
+  };
+  sensu-json = {
+    dependencies = ["oj"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "08zlxg5j3bhs72cc7wcllp026jbif0xiw6ib1cgawndlpsfl9fgx";
+      type = "gem";
+    };
+    version = "2.1.1";
+  };
+  sensu-logger = {
+    dependencies = ["eventmachine" "sensu-json"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0jpw4kz36ilaknrzb3rbkhpbgv93w2d668z2cv395dq30d4d3iwm";
+      type = "gem";
+    };
+    version = "1.2.2";
+  };
+  sensu-redis = {
+    dependencies = ["eventmachine"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0widfmmj1h9ca2kk14wy1sqmlkq40linp89a73s3ghngnzri0xyk";
+      type = "gem";
+    };
+    version = "2.4.0";
+  };
+  sensu-settings = {
+    dependencies = ["parse-cron" "sensu-json"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "152n4hazv2l4vbzrgd316rpj135jmz042fyh6k2yv2kw0x29pi0f";
+      type = "gem";
+    };
+    version = "10.14.0";
+  };
+  sensu-spawn = {
+    dependencies = ["childprocess" "em-worker" "eventmachine" "ffi"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "17yc8ivjpjbvig9r7yl6991d6ma0kcq75fbpz6i856ljvcr3lmd5";
+      type = "gem";
+    };
+    version = "2.5.0";
+  };
+  sensu-transport = {
+    dependencies = ["amq-protocol" "amqp" "eventmachine" "sensu-redis"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0x6vyfmg1jm1srf7xa5aka73by7qwcmry2rx8kq8phwa4g0v4mzr";
+      type = "gem";
+    };
+    version = "8.2.0";
+  };
+}
\ No newline at end of file
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index f05bf4c55a9f..f6a45abf7660 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4383,6 +4383,8 @@ in
     packages = config.ihaskell.packages or (self: []);
   };
 
+  iruby = callPackage ../applications/editors/jupyter-kernels/iruby { };
+
   imapproxy = callPackage ../tools/networking/imapproxy {
     openssl = openssl_1_0_2;
   };