diff --git a/maintainers/scripts/luarocks-packages.csv b/maintainers/scripts/luarocks-packages.csv
index 01e3150ede13b..506b44d2b272b 100644
--- a/maintainers/scripts/luarocks-packages.csv
+++ b/maintainers/scripts/luarocks-packages.csv
@@ -6,6 +6,7 @@ basexx,,,,,
 binaryheap,,,,,vcunat
 bit32,,,,lua5_1,lblasc
 busted,,,,,
+cassowary,,,,,
 cjson,lua-cjson,,,,
 compat53,,,,,vcunat
 coxpcall,,,1.17.0-1,,
diff --git a/pkgs/development/lua-modules/generated-packages.nix b/pkgs/development/lua-modules/generated-packages.nix
index 9afd8ab6a6ef8..062bf0dde851a 100644
--- a/pkgs/development/lua-modules/generated-packages.nix
+++ b/pkgs/development/lua-modules/generated-packages.nix
@@ -153,9 +153,23 @@ busted = buildLuarocksPackage {
   meta = with stdenv.lib; {
     homepage = "http://olivinelabs.com/busted/";
     description = "Elegant Lua unit testing.";
-    license = {
-      fullName = "MIT <http://opensource.org/licenses/MIT>";
-    };
+    license.fullName = "MIT <http://opensource.org/licenses/MIT>";
+  };
+};
+cassowary = buildLuarocksPackage {
+  pname = "cassowary";
+  version = "2.2-1";
+
+  src = fetchurl {
+    url    = mirror://luarocks/cassowary-2.2-1.src.rock;
+    sha256 = "0laghzk5jbap5rfd8sasnrdrbda649sfciarba8rhygm0qni1azy";
+  };
+  propagatedBuildInputs = [ lua penlight ];
+
+  meta = with stdenv.lib; {
+    homepage = "https://github.com/simoncozens/cassowary.lua";
+    description = "The cassowary constraint solver.";
+    license.fullName = "Apache 2";
   };
 };
 cjson = buildLuarocksPackage {