gnu: Add python-halo.

* gnu/packages/terminals.scm (python-halo): New variable.

Signed-off-by: Jean-Pierre De Jesus DIAZ <jean@foundationdevices.com>
Signed-off-by: Vagrant Cascadian <vagrant@debian.org>

gnu/packages/terminals.scm

@@ -1160,6 +1160,27 @@ terminal.  It features string-like objects which carry formatting information,
 per-line fullscreen terminal rendering, and keyboard input event reporting.")
     (license license:expat)))
 
+(define-public python-halo
+  (package
+    (name "python-halo")
+    (version "0.0.31")
+    (source (origin
+              (method url-fetch)
+              (uri (pypi-uri "halo" version))
+              (sha256
+               (base32
+                "1mn97h370ggbc9vi6x8r6akd5q8i512y6kid2nvm67g93r9a6rvv"))))
+    (build-system pyproject-build-system)
+    (propagated-inputs (list python-colorama python-log-symbols python-six
+                             python-spinners python-termcolor))
+    (native-inputs (list python-coverage python-nose python-pylint python-tox
+                         python-twine))
+    (home-page "https://github.com/manrajgrover/halo")
+    (synopsis "Python library to display graphical spinners in the terminal")
+    (description "Halo is a Python library to display graphical spinners in
+the terminal.  It also supports IPython/Jupyter.")
+    (license license:expat)))
+
 (define-public python-log-symbols
   (package
     (name "python-log-symbols")