diff --git a/flake.nix b/flake.nix
index 2028238..8877f88 100644
--- a/flake.nix
+++ b/flake.nix
@@ -123,6 +123,7 @@
           wodan = nixpkgs.lib.nixosSystem {
             specialArgs = { inherit inputs outputs; };
             modules = [
+              { nixpkgs.overlays = [ overlays.additions ]; }
               {
                 nixpkgs.overlays = [
                   tidalcycles.overlays.default
@@ -153,6 +154,7 @@
             system = "x86_64-linux";
             specialArgs = { inherit inputs outputs; };
             modules = [
+              { nixpkgs.overlays = [ overlays.additions ]; }
               ./hosts/heimdall
             ];
           };
diff --git a/hosts/heimdall/default.nix b/hosts/heimdall/default.nix
index dd0a2ec..3fd708a 100644
--- a/hosts/heimdall/default.nix
+++ b/hosts/heimdall/default.nix
@@ -30,6 +30,7 @@
   environment.systemPackages = with pkgs; [
     vim
     wget
+    puppet-editor-services
   ];
 
   nix.settings.experimental-features = [
diff --git a/pkgs/default.nix b/pkgs/default.nix
index ff4e7fb..f4c7ea6 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -1,3 +1,4 @@
 pkgs: {
   # example = pkgs.callPackage ./example { };
+  puppet-editor-services = pkgs.callPackage ./puppet-editor-services/package.nix { };
 }
diff --git a/pkgs/puppet-editor-services/Gemfile b/pkgs/puppet-editor-services/Gemfile
new file mode 100644
index 0000000..3ea93be
--- /dev/null
+++ b/pkgs/puppet-editor-services/Gemfile
@@ -0,0 +1,3 @@
+source 'https://rubygems.org'
+
+gem 'puppet-editor-services'
diff --git a/pkgs/puppet-editor-services/Gemfile.lock b/pkgs/puppet-editor-services/Gemfile.lock
new file mode 100644
index 0000000..ccd0fbb
--- /dev/null
+++ b/pkgs/puppet-editor-services/Gemfile.lock
@@ -0,0 +1,71 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    concurrent-ruby (1.3.5)
+    deep_merge (1.2.2)
+    facter (4.10.0)
+      hocon (~> 1.3)
+      thor (>= 1.0.1, < 1.3)
+    fast_gettext (3.1.0)
+      prime
+    forwardable (1.3.3)
+    getoptlong (0.2.1)
+    hiera-eyaml (4.3.0)
+      highline (>= 2.1, < 4)
+      optimist (~> 3.1)
+    highline (3.1.2)
+      reline
+    hocon (1.4.0)
+    io-console (0.8.1)
+    locale (2.1.4)
+    molinillo (0.8.0)
+    multi_json (1.17.0)
+    optimist (3.2.1)
+    prime (0.1.4)
+      forwardable
+      singleton
+    puppet (8.10.0)
+      concurrent-ruby (~> 1.0)
+      deep_merge (~> 1.0)
+      facter (>= 4.3.0, < 5)
+      fast_gettext (>= 2.1, < 4)
+      getoptlong (~> 0.2.0)
+      locale (~> 2.1)
+      multi_json (~> 1.13)
+      puppet-resource_api (~> 1.5)
+      scanf (~> 1.0)
+      semantic_puppet (~> 1.0)
+    puppet-editor-services (2.0.4)
+      hiera-eyaml
+      molinillo
+      puppet-lint
+      puppet-strings
+      puppetfile-resolver
+      yard
+    puppet-lint (5.1.0)
+    puppet-resource_api (1.9.0)
+      hocon (>= 1.0)
+    puppet-strings (5.0.0)
+      puppet (>= 8.0.0)
+      rgen (~> 0.9)
+      yard (~> 0.9)
+    puppetfile-resolver (0.6.3)
+      molinillo (~> 0.6)
+      semantic_puppet (~> 1.0)
+    reline (0.6.2)
+      io-console (~> 0.5)
+    rgen (0.10.2)
+    scanf (1.0.0)
+    semantic_puppet (1.1.1)
+    singleton (0.3.0)
+    thor (1.2.2)
+    yard (0.9.37)
+
+PLATFORMS
+  x86_64-linux
+
+DEPENDENCIES
+  puppet-editor-services
+
+BUNDLED WITH
+   2.6.6
diff --git a/pkgs/puppet-editor-services/gemset.nix b/pkgs/puppet-editor-services/gemset.nix
new file mode 100644
index 0000000..35ae1f1
--- /dev/null
+++ b/pkgs/puppet-editor-services/gemset.nix
@@ -0,0 +1,293 @@
+{
+  concurrent-ruby = {
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1ipbrgvf0pp6zxdk5ascp6i29aybz2bx9wdrlchjmpx6mhvkwfw1";
+      type = "gem";
+    };
+    version = "1.3.5";
+  };
+  deep_merge = {
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0fjn4civid68a3zxnbgyjj6krs3l30dy8b4djpg6fpzrsyix7kl3";
+      type = "gem";
+    };
+    version = "1.2.2";
+  };
+  facter = {
+    dependencies = ["hocon" "thor"];
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "17d561xf4s5016fm9jkfkkafn6660g04fz1yp5xfvkb0j4xj32mp";
+      type = "gem";
+    };
+    version = "4.10.0";
+  };
+  fast_gettext = {
+    dependencies = ["prime"];
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1i9anyxdsz3lxlg9cg2dcad1fwykz4lr45v2q3nwjp477b1q8k4w";
+      type = "gem";
+    };
+    version = "3.1.0";
+  };
+  forwardable = {
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1b5g1i3xdvmxxpq4qp0z4v78ivqnazz26w110fh4cvzsdayz8zgi";
+      type = "gem";
+    };
+    version = "1.3.3";
+  };
+  getoptlong = {
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "198vy9dxyzibqdbw9jg8p2ljj9iknkyiqlyl229vz55rjxrz08zx";
+      type = "gem";
+    };
+    version = "0.2.1";
+  };
+  hiera-eyaml = {
+    dependencies = ["highline" "optimist"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "02mb113yjzwb6jkckybzsiq803c688r9xpv4w1nxbckhkpma5sqr";
+      type = "gem";
+    };
+    version = "4.3.0";
+  };
+  highline = {
+    dependencies = ["reline"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0jmvyhjp2v3iq47la7w6psrxbprnbnmzz0hxxski3vzn356x7jv7";
+      type = "gem";
+    };
+    version = "3.1.2";
+  };
+  hocon = {
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "106dmzsl1bxkqw5xaif012nwwfr3k9wff32cqc77ibjngknj6477";
+      type = "gem";
+    };
+    version = "1.4.0";
+  };
+  io-console = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1jszj95hazqqpnrjjzr326nn1j32xmsc9xvd97mbcrrgdc54858y";
+      type = "gem";
+    };
+    version = "0.8.1";
+  };
+  locale = {
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "107pm4ccmla23z963kyjldgngfigvchnv85wr6m69viyxxrrjbsj";
+      type = "gem";
+    };
+    version = "2.1.4";
+  };
+  molinillo = {
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0p846facmh1j5xmbrpgzadflspvk7bzs3sykrh5s7qi4cdqz5gzg";
+      type = "gem";
+    };
+    version = "0.8.0";
+  };
+  multi_json = {
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "06sabsvnw0x1aqdcswc6bqrqz6705548bfd8z22jxgxfjrn1yn3n";
+      type = "gem";
+    };
+    version = "1.17.0";
+  };
+  optimist = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0kp3f8g7g7cbw5vfkmpdv71pphhpcxk3lpc892mj9apkd7ys1y4c";
+      type = "gem";
+    };
+    version = "3.2.1";
+  };
+  prime = {
+    dependencies = ["forwardable" "singleton"];
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0pi2g9sd9ssyrpvbybh4skrgzqrv0rrd1q7ylgrsd519gjzmwxad";
+      type = "gem";
+    };
+    version = "0.1.4";
+  };
+  puppet = {
+    dependencies = ["concurrent-ruby" "deep_merge" "facter" "fast_gettext" "getoptlong" "locale" "multi_json" "puppet-resource_api" "scanf" "semantic_puppet"];
+    groups = ["development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0fia3ji6isnqz4a31aq8k4nd8p7vkxn80hhgqfdc8kkrba7xxxgj";
+      type = "gem";
+    };
+    version = "8.10.0";
+  };
+  puppet-editor-services = {
+    dependencies = ["hiera-eyaml" "molinillo" "puppet-lint" "puppet-strings" "puppetfile-resolver" "yard"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0kjah54y2byyqcvcc9vsn2r3kpvbk6qldrg45m5knv9yrypxlhir";
+      type = "gem";
+    };
+    version = "2.0.4";
+  };
+  puppet-lint = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "15ncdcl6q76qyxjw2w8k5ihfg2y0cl59qzgk805ml4b8fdkinmlh";
+      type = "gem";
+    };
+    version = "5.1.0";
+  };
+  puppet-resource_api = {
+    dependencies = ["hocon"];
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0rxy5s7hl707x4sc1b4v2yqyii6pkym2gmsam3ri0f0xmmzyg0jb";
+      type = "gem";
+    };
+    version = "1.9.0";
+  };
+  puppet-strings = {
+    dependencies = ["puppet" "rgen" "yard"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "12zsarq3pjxm71k7wj09a8rdqrbf0ssxkr67s10p972dmcfj54wz";
+      type = "gem";
+    };
+    version = "5.0.0";
+  };
+  puppetfile-resolver = {
+    dependencies = ["molinillo" "semantic_puppet"];
+    groups = ["development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1kil8sbrl9c34ygrgm35893zygr4j6fjvfhbs4rs0b5n3cjrainm";
+      type = "gem";
+    };
+    version = "0.6.3";
+  };
+  reline = {
+    dependencies = ["io-console"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0ii8l0q5zkang3lxqlsamzfz5ja7jc8ln905isfdawl802k2db8x";
+      type = "gem";
+    };
+    version = "0.6.2";
+  };
+  rgen = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0wgk4brd1v63ivdh5nnlkynfxk8m7bac9q50ydgq3d50hx4ghy6r";
+      type = "gem";
+    };
+    version = "0.10.2";
+  };
+  scanf = {
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "000vxsci3zq8m1wl7mmppj7sarznrqlm6v2x2hdfmbxcwpvvfgak";
+      type = "gem";
+    };
+    version = "1.0.0";
+  };
+  semantic_puppet = {
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "15ksbizvakfx0zfdgjbh34hqnrnkjj47m4kbnsg58mpqsx45pzqm";
+      type = "gem";
+    };
+    version = "1.1.1";
+  };
+  singleton = {
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0y2pc7lr979pab5n5lvk3jhsi99fhskl5f2s6004v8sabz51psl3";
+      type = "gem";
+    };
+    version = "0.3.0";
+  };
+  thor = {
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0k7j2wn14h1pl4smibasw0bp66kg626drxb59z7rzflch99cd4rg";
+      type = "gem";
+    };
+    version = "1.2.2";
+  };
+  yard = {
+    groups = ["development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "14k9lb9a60r9z2zcqg08by9iljrrgjxdkbd91gw17rkqkqwi1sd6";
+      type = "gem";
+    };
+    version = "0.9.37";
+  };
+}
diff --git a/pkgs/puppet-editor-services/package.nix b/pkgs/puppet-editor-services/package.nix
new file mode 100644
index 0000000..0b353a4
--- /dev/null
+++ b/pkgs/puppet-editor-services/package.nix
@@ -0,0 +1,8 @@
+{
+  bundlerApp,
+}:
+bundlerApp {
+  pname = "puppet-editor-services";
+  gemdir = ./.;
+  exes = [ "puppet-languageserver" ];
+}