diff --git a/radix/packages/wm.scm b/radix/packages/wm.scm
index 3503e70..428de77 100644
--- a/radix/packages/wm.scm
+++ b/radix/packages/wm.scm
@@ -2,6 +2,8 @@
   #:use-module (gnu packages freedesktop)
   #:use-module (gnu packages guile)
   #:use-module (gnu packages guile-xyz)
+  #:use-module (gnu packages haskell-check)
+  #:use-module (gnu packages haskell-xyz)
   #:use-module (gnu packages linux)
   #:use-module (gnu packages pkg-config)
   #:use-module (gnu packages wm)
@@ -9,7 +11,9 @@
   #:use-module (gnu packages zig-xyz)
   #:use-module (gnu packages)
   #:use-module (guix build-system gnu)
+  #:use-module (guix build-system haskell)
   #:use-module (guix build-system zig)
+  #:use-module (guix download)
   #:use-module (guix gexp)
   #:use-module (guix git-download)
   #:use-module (guix packages)
@@ -147,3 +151,43 @@ which case the previously focused tags are focused again.")
     (native-inputs
       (modify-inputs (package-native-inputs river)
         (delete "libxkbcommon")))))
+
+(define-public xmonad
+  (package
+    (name "xmonad")
+    (version "0.18.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (hackage-uri "xmonad" version))
+       (sha256
+        (base32 "1ysxxjkkx2l160nlj1h8ysxrfhxjlmbws2nm0wyiivmjgn20xs11"))))
+    (build-system haskell-build-system)
+    (properties '((upstream-name . "xmonad")))
+    (arguments
+      (list #:phases
+            #~(modify-phases %standard-phases
+                (add-after 'install 'install-xsession
+                  (lambda _
+                    (let ((xsessions (string-append #$output "/share/xsessions")))
+                      (mkdir-p xsessions)
+                      (make-desktop-entry-file
+                        (string-append xsessions "/xmonad.desktop")
+                        #:name "xmonad"
+                        #:comment "xmonad window manager"
+                        #:type "Application"
+                        #:exec (string-append #$output "/bin/xmonad"))))))))
+    (inputs (list ghc-x11 ghc-data-default-class ghc-setlocale))
+    (native-inputs (list ghc-quickcheck ghc-quickcheck-classes))
+    (home-page "http://xmonad.org")
+    (synopsis "Tiling window manager")
+    (description
+     "Xmonad is a tiling window manager for X.  Windows are arranged
+automatically to tile the screen without gaps or overlap, maximising screen
+use.  All features of the window manager are accessible from the keyboard: a
+mouse is strictly optional.  Xmonad is written and extensible in Haskell.
+Custom layout algorithms, and other extensions, may be written by the user in
+config files.  Layouts are applied dynamically, and different layouts may be
+used on each workspace.  Xinerama is fully supported, allowing windows to be
+tiled on several screens.")
+    (license license:bsd-3)))