diff --git a/pkgs/development/libraries/haskell/Zwaluw/default.nix b/pkgs/development/libraries/haskell/Zwaluw/default.nix
new file mode 100644
index 000000000000..125da2a795e1
--- /dev/null
+++ b/pkgs/development/libraries/haskell/Zwaluw/default.nix
@@ -0,0 +1,17 @@
+{ cabal }:
+
+cabal.mkDerivation (self: {
+  pname = "Zwaluw";
+  version = "0.1";
+  sha256 = "1crvcvni5gzpc1c6cnaqqp0gng1l9gk9d8ac23967nvp82xav7s1";
+  meta = {
+    homepage = "https://github.com/MedeaMelana/Zwaluw";
+    description = "Combinators for bidirectional URL routing";
+    license = self.stdenv.lib.licenses.bsd3;
+    platforms = self.ghc.meta.platforms;
+    maintainers = [
+      self.stdenv.lib.maintainers.andres
+      self.stdenv.lib.maintainers.simons
+    ];
+  };
+})
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index aa14f2360bd2..f42761c93cb5 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -1340,6 +1340,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   zlibEnum = callPackage ../development/libraries/haskell/zlib-enum {};
 
+  Zwaluw = callPackage ../development/libraries/haskell/Zwaluw {};
+
   # Compilers.
 
   AgdaExecutable = callPackage ../development/compilers/Agda-executable {};