gnu: Add python-pebble.

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

gnu/packages/python-xyz.scm

@@ -7229,6 +7229,31 @@ The output of all running processes is collected by honcho and
 displayed.")
     (license license:expat)))
 
+(define-public python-pebble
+  (package
+    (name "python-pebble")
+    (version "4.6.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "Pebble" version))
+       (sha256
+        (base32 "16siqc3brbk7dp4d9sg48bjl6a8wyy24aib3il1hf4y2624draxh"))))
+    (build-system python-build-system)
+    (native-inputs
+     `(("python-pytest" ,python-pytest)))
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (replace 'check
+           (lambda _ (invoke "python" "-m" "pytest" "-sv"))))))
+    (home-page "https://github.com/noxdafox/pebble")
+    (synopsis "Threading and multiprocessing for Python")
+    (description
+     "Pebble aims to help manage threads and processes in an easier way.  It
+wraps Python's standard library threading and multiprocessing objects.")
+    (license license:lgpl3+)))
+
 (define-public python-pexpect
   (package
     (name "python-pexpect")