gnu: Add guile-squee-dev.

* gnu/packages/ci.scm (guile-squee-dev): New variable.

gnu/packages/ci.scm

@@ -54,6 +54,24 @@ (define-module (gnu packages ci)
   #:use-module (guix build-system cmake)
   #:use-module (guix build-system gnu))
 
+(define-public guile-squee-dev
+  (let ((commit "e0614273ad4067af82f508db51c8a100131151ea")
+        (revision "3"))
+    (package
+      (inherit guile-squee)
+      (name "guile-squee")
+      (version (string-append "0-" revision "." (string-take commit 7)))
+      (home-page "https://notabug.org/mothacehe/guile-squee.git")
+      (source (origin
+                (method git-fetch)
+                (uri (git-reference
+                      (url home-page)
+                      (commit commit)))
+                (sha256
+                 (base32
+                  "1jps14z8653ah2kr367iayzyi3ql2s55l77xrafz7gk3mzcvgrrg"))
+                (file-name (string-append name "-" version "-checkout")))))))
+
 (define-public cuirass
   (let ((commit "40b32387cf290a84660d34c42da0637bc93c2b00")
         (revision "16"))