diff --git a/pkgs/tools/misc/haste-client/Gemfile b/pkgs/tools/misc/haste-client/Gemfile
new file mode 100644
index 000000000000..851fabc21ddb
--- /dev/null
+++ b/pkgs/tools/misc/haste-client/Gemfile
@@ -0,0 +1,2 @@
+source 'https://rubygems.org'
+gemspec
diff --git a/pkgs/tools/misc/haste-client/Gemfile.lock b/pkgs/tools/misc/haste-client/Gemfile.lock
new file mode 100644
index 000000000000..430407946604
--- /dev/null
+++ b/pkgs/tools/misc/haste-client/Gemfile.lock
@@ -0,0 +1,38 @@
+PATH
+  remote: .
+  specs:
+    haste (0.2.3)
+      faraday (~> 0.9)
+      json
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    diff-lcs (1.4.4)
+    faraday (0.17.3)
+      multipart-post (>= 1.2, < 3)
+    json (2.3.1)
+    multipart-post (2.1.1)
+    rspec (3.9.0)
+      rspec-core (~> 3.9.0)
+      rspec-expectations (~> 3.9.0)
+      rspec-mocks (~> 3.9.0)
+    rspec-core (3.9.2)
+      rspec-support (~> 3.9.3)
+    rspec-expectations (3.9.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.9.0)
+    rspec-mocks (3.9.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.9.0)
+    rspec-support (3.9.3)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  haste!
+  rspec
+
+BUNDLED WITH
+   2.1.4
diff --git a/pkgs/tools/misc/haste-client/default.nix b/pkgs/tools/misc/haste-client/default.nix
new file mode 100644
index 000000000000..477ba5820aa3
--- /dev/null
+++ b/pkgs/tools/misc/haste-client/default.nix
@@ -0,0 +1,31 @@
+{ lib
+, bundlerEnv
+, buildRubyGem
+, ruby
+}:
+
+let 
+  version = "0.2.3";
+  deps = bundlerEnv rec {
+    name = "haste-client-${version}";
+    inherit ruby;
+    gemdir = ./.;
+  };
+in
+buildRubyGem rec {
+  name = "haste-client-${version}";
+  inherit version;
+  gemName = "haste";
+
+  source.sha256 = "0jaq0kvlxwvd0jq9pl707saqnaaal3dis13mqwfjbj121gr4hq4q";
+
+  propagatedBuildInputs = [ deps ];
+
+  meta = with lib; {
+    description = "Command line interface to the AnyStyle Parser and Finder";
+    homepage    = "https://rubygems.org/gems/haste";
+    license     = licenses.mit;
+    maintainers = with maintainers; [ shamilton ];
+    platforms   = platforms.unix;
+  };
+}
diff --git a/pkgs/tools/misc/haste-client/gemset.nix b/pkgs/tools/misc/haste-client/gemset.nix
new file mode 100644
index 000000000000..336df25081bd
--- /dev/null
+++ b/pkgs/tools/misc/haste-client/gemset.nix
@@ -0,0 +1,703 @@
+{
+  diff-lcs = {
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0m925b8xc6kbpnif9dldna24q1szg4mk0fvszrki837pfn46afmz";
+      type = "gem";
+    };
+    version = "1.4.4";
+  };
+  faraday = {
+    dependencies = ["multipart-post"];
+    groups = ["default"];
+    platforms = [{
+      engine = "maglev";
+    } {
+      engine = "maglev";
+    } {
+      engine = "maglev";
+      version = "1.8";
+    } {
+      engine = "maglev";
+      version = "1.8";
+    } {
+      engine = "maglev";
+      version = "1.9";
+    } {
+      engine = "maglev";
+      version = "1.9";
+    } {
+      engine = "maglev";
+      version = "2.0";
+    } {
+      engine = "maglev";
+      version = "2.0";
+    } {
+      engine = "maglev";
+      version = "2.1";
+    } {
+      engine = "maglev";
+      version = "2.1";
+    } {
+      engine = "maglev";
+      version = "2.2";
+    } {
+      engine = "maglev";
+      version = "2.2";
+    } {
+      engine = "maglev";
+      version = "2.3";
+    } {
+      engine = "maglev";
+      version = "2.3";
+    } {
+      engine = "maglev";
+      version = "2.4";
+    } {
+      engine = "maglev";
+      version = "2.4";
+    } {
+      engine = "maglev";
+      version = "2.5";
+    } {
+      engine = "maglev";
+      version = "2.5";
+    } {
+      engine = "maglev";
+      version = "2.6";
+    } {
+      engine = "maglev";
+      version = "2.6";
+    } {
+      engine = "rbx";
+    } {
+      engine = "rbx";
+    } {
+      engine = "rbx";
+      version = "1.8";
+    } {
+      engine = "rbx";
+      version = "1.9";
+    } {
+      engine = "rbx";
+      version = "2.0";
+    } {
+      engine = "rbx";
+      version = "2.1";
+    } {
+      engine = "rbx";
+      version = "2.2";
+    } {
+      engine = "rbx";
+      version = "2.3";
+    } {
+      engine = "rbx";
+      version = "2.4";
+    } {
+      engine = "rbx";
+      version = "2.5";
+    } {
+      engine = "rbx";
+      version = "2.6";
+    } {
+      engine = "ruby";
+    } {
+      engine = "ruby";
+    } {
+      engine = "ruby";
+    } {
+      engine = "ruby";
+      version = "1.8";
+    } {
+      engine = "ruby";
+      version = "1.8";
+    } {
+      engine = "ruby";
+      version = "1.9";
+    } {
+      engine = "ruby";
+      version = "1.9";
+    } {
+      engine = "ruby";
+      version = "2.0";
+    } {
+      engine = "ruby";
+      version = "2.0";
+    } {
+      engine = "ruby";
+      version = "2.1";
+    } {
+      engine = "ruby";
+      version = "2.1";
+    } {
+      engine = "ruby";
+      version = "2.2";
+    } {
+      engine = "ruby";
+      version = "2.2";
+    } {
+      engine = "ruby";
+      version = "2.3";
+    } {
+      engine = "ruby";
+      version = "2.3";
+    } {
+      engine = "ruby";
+      version = "2.4";
+    } {
+      engine = "ruby";
+      version = "2.4";
+    } {
+      engine = "ruby";
+      version = "2.5";
+    } {
+      engine = "ruby";
+      version = "2.5";
+    } {
+      engine = "ruby";
+      version = "2.6";
+    } {
+      engine = "ruby";
+      version = "2.6";
+    }];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "13aghksmni2sl15y7wfpx6k5l3lfd8j9gdyqi6cbw6jgc7bqyyn2";
+      type = "gem";
+    };
+    version = "0.17.3";
+  };
+  haste = {
+    dependencies = ["faraday" "json"];
+    groups = ["default"];
+    platforms = [{
+      engine = "maglev";
+    } {
+      engine = "maglev";
+    } {
+      engine = "maglev";
+      version = "1.8";
+    } {
+      engine = "maglev";
+      version = "1.8";
+    } {
+      engine = "maglev";
+      version = "1.9";
+    } {
+      engine = "maglev";
+      version = "1.9";
+    } {
+      engine = "maglev";
+      version = "2.0";
+    } {
+      engine = "maglev";
+      version = "2.0";
+    } {
+      engine = "maglev";
+      version = "2.1";
+    } {
+      engine = "maglev";
+      version = "2.1";
+    } {
+      engine = "maglev";
+      version = "2.2";
+    } {
+      engine = "maglev";
+      version = "2.2";
+    } {
+      engine = "maglev";
+      version = "2.3";
+    } {
+      engine = "maglev";
+      version = "2.3";
+    } {
+      engine = "maglev";
+      version = "2.4";
+    } {
+      engine = "maglev";
+      version = "2.4";
+    } {
+      engine = "maglev";
+      version = "2.5";
+    } {
+      engine = "maglev";
+      version = "2.5";
+    } {
+      engine = "maglev";
+      version = "2.6";
+    } {
+      engine = "maglev";
+      version = "2.6";
+    } {
+      engine = "rbx";
+    } {
+      engine = "rbx";
+    } {
+      engine = "rbx";
+      version = "1.8";
+    } {
+      engine = "rbx";
+      version = "1.9";
+    } {
+      engine = "rbx";
+      version = "2.0";
+    } {
+      engine = "rbx";
+      version = "2.1";
+    } {
+      engine = "rbx";
+      version = "2.2";
+    } {
+      engine = "rbx";
+      version = "2.3";
+    } {
+      engine = "rbx";
+      version = "2.4";
+    } {
+      engine = "rbx";
+      version = "2.5";
+    } {
+      engine = "rbx";
+      version = "2.6";
+    } {
+      engine = "ruby";
+    } {
+      engine = "ruby";
+    } {
+      engine = "ruby";
+    } {
+      engine = "ruby";
+      version = "1.8";
+    } {
+      engine = "ruby";
+      version = "1.8";
+    } {
+      engine = "ruby";
+      version = "1.9";
+    } {
+      engine = "ruby";
+      version = "1.9";
+    } {
+      engine = "ruby";
+      version = "2.0";
+    } {
+      engine = "ruby";
+      version = "2.0";
+    } {
+      engine = "ruby";
+      version = "2.1";
+    } {
+      engine = "ruby";
+      version = "2.1";
+    } {
+      engine = "ruby";
+      version = "2.2";
+    } {
+      engine = "ruby";
+      version = "2.2";
+    } {
+      engine = "ruby";
+      version = "2.3";
+    } {
+      engine = "ruby";
+      version = "2.3";
+    } {
+      engine = "ruby";
+      version = "2.4";
+    } {
+      engine = "ruby";
+      version = "2.4";
+    } {
+      engine = "ruby";
+      version = "2.5";
+    } {
+      engine = "ruby";
+      version = "2.5";
+    } {
+      engine = "ruby";
+      version = "2.6";
+    } {
+      engine = "ruby";
+      version = "2.6";
+    }];
+    source = {
+      path = ./.;
+      type = "path";
+    };
+    version = "0.2.3";
+  };
+  json = {
+    groups = ["default"];
+    platforms = [{
+      engine = "maglev";
+    } {
+      engine = "maglev";
+    } {
+      engine = "maglev";
+      version = "1.8";
+    } {
+      engine = "maglev";
+      version = "1.8";
+    } {
+      engine = "maglev";
+      version = "1.9";
+    } {
+      engine = "maglev";
+      version = "1.9";
+    } {
+      engine = "maglev";
+      version = "2.0";
+    } {
+      engine = "maglev";
+      version = "2.0";
+    } {
+      engine = "maglev";
+      version = "2.1";
+    } {
+      engine = "maglev";
+      version = "2.1";
+    } {
+      engine = "maglev";
+      version = "2.2";
+    } {
+      engine = "maglev";
+      version = "2.2";
+    } {
+      engine = "maglev";
+      version = "2.3";
+    } {
+      engine = "maglev";
+      version = "2.3";
+    } {
+      engine = "maglev";
+      version = "2.4";
+    } {
+      engine = "maglev";
+      version = "2.4";
+    } {
+      engine = "maglev";
+      version = "2.5";
+    } {
+      engine = "maglev";
+      version = "2.5";
+    } {
+      engine = "maglev";
+      version = "2.6";
+    } {
+      engine = "maglev";
+      version = "2.6";
+    } {
+      engine = "rbx";
+    } {
+      engine = "rbx";
+    } {
+      engine = "rbx";
+      version = "1.8";
+    } {
+      engine = "rbx";
+      version = "1.9";
+    } {
+      engine = "rbx";
+      version = "2.0";
+    } {
+      engine = "rbx";
+      version = "2.1";
+    } {
+      engine = "rbx";
+      version = "2.2";
+    } {
+      engine = "rbx";
+      version = "2.3";
+    } {
+      engine = "rbx";
+      version = "2.4";
+    } {
+      engine = "rbx";
+      version = "2.5";
+    } {
+      engine = "rbx";
+      version = "2.6";
+    } {
+      engine = "ruby";
+    } {
+      engine = "ruby";
+    } {
+      engine = "ruby";
+    } {
+      engine = "ruby";
+      version = "1.8";
+    } {
+      engine = "ruby";
+      version = "1.8";
+    } {
+      engine = "ruby";
+      version = "1.9";
+    } {
+      engine = "ruby";
+      version = "1.9";
+    } {
+      engine = "ruby";
+      version = "2.0";
+    } {
+      engine = "ruby";
+      version = "2.0";
+    } {
+      engine = "ruby";
+      version = "2.1";
+    } {
+      engine = "ruby";
+      version = "2.1";
+    } {
+      engine = "ruby";
+      version = "2.2";
+    } {
+      engine = "ruby";
+      version = "2.2";
+    } {
+      engine = "ruby";
+      version = "2.3";
+    } {
+      engine = "ruby";
+      version = "2.3";
+    } {
+      engine = "ruby";
+      version = "2.4";
+    } {
+      engine = "ruby";
+      version = "2.4";
+    } {
+      engine = "ruby";
+      version = "2.5";
+    } {
+      engine = "ruby";
+      version = "2.5";
+    } {
+      engine = "ruby";
+      version = "2.6";
+    } {
+      engine = "ruby";
+      version = "2.6";
+    }];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "158fawfwmv2sq4whqqaksfykkiad2xxrrj0nmpnc6vnlzi1bp7iz";
+      type = "gem";
+    };
+    version = "2.3.1";
+  };
+  multipart-post = {
+    groups = ["default"];
+    platforms = [{
+      engine = "maglev";
+    } {
+      engine = "maglev";
+    } {
+      engine = "maglev";
+      version = "1.8";
+    } {
+      engine = "maglev";
+      version = "1.8";
+    } {
+      engine = "maglev";
+      version = "1.9";
+    } {
+      engine = "maglev";
+      version = "1.9";
+    } {
+      engine = "maglev";
+      version = "2.0";
+    } {
+      engine = "maglev";
+      version = "2.0";
+    } {
+      engine = "maglev";
+      version = "2.1";
+    } {
+      engine = "maglev";
+      version = "2.1";
+    } {
+      engine = "maglev";
+      version = "2.2";
+    } {
+      engine = "maglev";
+      version = "2.2";
+    } {
+      engine = "maglev";
+      version = "2.3";
+    } {
+      engine = "maglev";
+      version = "2.3";
+    } {
+      engine = "maglev";
+      version = "2.4";
+    } {
+      engine = "maglev";
+      version = "2.4";
+    } {
+      engine = "maglev";
+      version = "2.5";
+    } {
+      engine = "maglev";
+      version = "2.5";
+    } {
+      engine = "maglev";
+      version = "2.6";
+    } {
+      engine = "maglev";
+      version = "2.6";
+    } {
+      engine = "rbx";
+    } {
+      engine = "rbx";
+    } {
+      engine = "rbx";
+      version = "1.8";
+    } {
+      engine = "rbx";
+      version = "1.9";
+    } {
+      engine = "rbx";
+      version = "2.0";
+    } {
+      engine = "rbx";
+      version = "2.1";
+    } {
+      engine = "rbx";
+      version = "2.2";
+    } {
+      engine = "rbx";
+      version = "2.3";
+    } {
+      engine = "rbx";
+      version = "2.4";
+    } {
+      engine = "rbx";
+      version = "2.5";
+    } {
+      engine = "rbx";
+      version = "2.6";
+    } {
+      engine = "ruby";
+    } {
+      engine = "ruby";
+    } {
+      engine = "ruby";
+    } {
+      engine = "ruby";
+      version = "1.8";
+    } {
+      engine = "ruby";
+      version = "1.8";
+    } {
+      engine = "ruby";
+      version = "1.9";
+    } {
+      engine = "ruby";
+      version = "1.9";
+    } {
+      engine = "ruby";
+      version = "2.0";
+    } {
+      engine = "ruby";
+      version = "2.0";
+    } {
+      engine = "ruby";
+      version = "2.1";
+    } {
+      engine = "ruby";
+      version = "2.1";
+    } {
+      engine = "ruby";
+      version = "2.2";
+    } {
+      engine = "ruby";
+      version = "2.2";
+    } {
+      engine = "ruby";
+      version = "2.3";
+    } {
+      engine = "ruby";
+      version = "2.3";
+    } {
+      engine = "ruby";
+      version = "2.4";
+    } {
+      engine = "ruby";
+      version = "2.4";
+    } {
+      engine = "ruby";
+      version = "2.5";
+    } {
+      engine = "ruby";
+      version = "2.5";
+    } {
+      engine = "ruby";
+      version = "2.6";
+    } {
+      engine = "ruby";
+      version = "2.6";
+    }];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1zgw9zlwh2a6i1yvhhc4a84ry1hv824d6g2iw2chs3k5aylpmpfj";
+      type = "gem";
+    };
+    version = "2.1.1";
+  };
+  rspec = {
+    dependencies = ["rspec-core" "rspec-expectations" "rspec-mocks"];
+    groups = ["development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1hzsig4pi9ybr0xl5540m1swiyxa74c8h09225y5sdh2rjkkg84h";
+      type = "gem";
+    };
+    version = "3.9.0";
+  };
+  rspec-core = {
+    dependencies = ["rspec-support"];
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1xndkv5cz763wh30x7hdqw6k7zs8xfh0f86amra9agwn44pcqs0y";
+      type = "gem";
+    };
+    version = "3.9.2";
+  };
+  rspec-expectations = {
+    dependencies = ["diff-lcs" "rspec-support"];
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1bxkv25qmy39jqrdx35bfgw00g24qkssail9jlljm7hywbqvr9bb";
+      type = "gem";
+    };
+    version = "3.9.2";
+  };
+  rspec-mocks = {
+    dependencies = ["diff-lcs" "rspec-support"];
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "19vmdqym1v2g1zbdnq37zwmyj87y9yc9ijwc8js55igvbb9hx0mr";
+      type = "gem";
+    };
+    version = "3.9.1";
+  };
+  rspec-support = {
+    groups = ["default" "development"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0dandh2fy1dfkjk8jf9v4azbbma6968bhh06hddv0yqqm8108jir";
+      type = "gem";
+    };
+    version = "3.9.3";
+  };
+}
\ No newline at end of file
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index eb049d9923db..8835bcec9d82 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4915,6 +4915,8 @@ in
 
   hasmail = callPackage ../applications/networking/mailreaders/hasmail { };
 
+  haste-client = callPackage ../tools/misc/haste-client { };
+
   hal-flash = callPackage ../os-specific/linux/hal-flash { };
 
   hal-hardware-analyzer = libsForQt5.callPackage ../applications/science/electronics/hal-hardware-analyzer { };