gnu: Add python-pytooling-4.

* gnu/packages/python-xyz.scm (python-pytooling-4): New variable.

Change-Id: I4ee0b264ab784657101390c2e6f59e8dcb23f173
Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/packages/python-xyz.scm

@@ -2615,6 +2615,21 @@ It also provides lots of helper functions---e.g., to ease the handling of
 package descriptions or to unify multiple existing APIs into a single API.")
     (license license:asl2.0)))
 
+(define-public python-pytooling-4
+  (package
+    (inherit python-pytooling)
+    (name "python-pytooling")
+    (version "4.0.1")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/pyTooling/pyTooling/")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "1midq2im2ksdy0knssnlwijdkjk0hwjxk5xin93xg4l7j89kvmj3"))))))
+
 (define-public python-colorlog
   (package
     (name "python-colorlog")