diff --git a/etc/guix-config/neon.scm b/etc/guix-config/neon.scm
index afd24d9..d09dbe9 100644
--- a/etc/guix-config/neon.scm
+++ b/etc/guix-config/neon.scm
@@ -1,3 +1,25 @@
 (add-to-load-path "/etc/guix-config")
-(use-modules (cobra os))
-%thinkpad:t60
+(use-modules (gnu) (cobra os))
+
+(operating-system
+  (inherit %thinkpad)
+  (host-name "Neon")
+  (mapped-devices (list
+                    (mapped-device
+                      (source (uuid "72cd3842-a6e5-4fb5-b994-1ce11d2d0a16"))
+                      (target "fde")
+                      (type luks-device-mapping))
+                    (mapped-device
+                      (source "matrix")
+                      (targets (list "matrix-rootvol"))
+                      (type lvm-device-mapping))))
+  (file-systems (append (list
+                          (file-system
+                            (type "btrfs")
+                            (mount-point "/")
+                            (device (file-system-label "root"))
+                            (flags '(no-atime))
+                            (options "space_cache=v2")
+                            (needed-for-boot? #t)
+                            (dependencies mapped-devices)))
+                       %base-file-systems)))
diff --git a/tmp b/tmp
new file mode 100644
index 0000000..95cb486
--- /dev/null
+++ b/tmp
@@ -0,0 +1 @@
+72cd3842-a6e5-4fb5-b994-1ce11d2d0a16