gnu: Add python-watchgod.

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

Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>

gnu/packages/python-xyz.scm

@@ -20343,6 +20343,49 @@ such as a file modification and trigger an action.  This is similar to inotify,
 but portable.")
     (license license:asl2.0)))
 
+(define-public python-watchgod
+  (package
+    (name "python-watchgod")
+    (version "0.6")
+    (source
+     (origin
+       ;; There are no tests in the PyPI tarball.
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/samuelcolvin/watchgod")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "1lqx44wkryakgpyqj3m0hsz61bqr07vc7smgzh188374hwvscp66"))))
+    (build-system python-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (replace 'check
+           (lambda _
+             (invoke "pytest" "-vv"))))))
+    (native-inputs
+     `(("python-coverage" ,python-coverage)
+       ("python-docutils" ,python-docutils)
+       ("python-flake8" ,python-flake8)
+       ("python-isort" ,python-isort)
+       ("python-pycodestyle" ,python-pycodestyle)
+       ("python-pyflakes" ,python-pyflakes)
+       ("python-pygments" ,python-pygments)
+       ("python-pytest" ,python-pytest)
+       ("python-pytest-cov" ,python-pytest-cov)
+       ("python-pytest-aiohttp" ,python-pytest-aiohttp)
+       ("python-pytest-mock" ,python-pytest-mock)
+       ("python-pytest-sugar" ,python-pytest-sugar)
+       ("python-pytest-toolbox" ,python-pytest-toolbox)))
+    (home-page "https://github.com/samuelcolvin/watchgod")
+    (synopsis "Simple, modern file watching and code reload in Python")
+    (description
+     "Simple, modern file watching and code reload in Python inspired by
+@code{watchdog}.  Among the differences are a unified approach for each
+operating systems and an elegant approach to concurrency using threading.")
+    (license license:expat)))
+
 (define-public python-wget
   (package
     (name "python-wget")