[PATCH] gnu: Add python-catalogue

+++ b/gnu/packages/python-xyz.scm

+

+(define-public python-catalogue

+  (package

+    (name "python-catalogue")

+    (version "2.0.7")

+    (source (origin

+              (method url-fetch)

+              (uri (pypi-uri "catalogue" version))

+              (sha256

+               (base32

+                "0srdxiil2xys8q1gpc1nvzhvis3a33d8a7amk2i1rlpbg6p36pak"))))

+    (build-system python-build-system)

+    (native-inputs (list python-pytest))

+    (inputs (list python python-zipp python-typing-extensions python-mypy))

+    (home-page "https://github.com/explosion/catalogue")

+    (synopsis "Lightweight function registries for your library")

+    (description

+     "\"catalogue\" is a tiny, zero-dependencies library that

+makes it easy to add function (or object) registries to your code.  Function

+registries are helpful when you have objects that need to be both easily

+serializable and fully customizable.  Instead of passing a function into your

+object, you pass in an identifier name, which the object can use to lookup the

+function from the registry.  This makes the object easy to serialize, because the

+name is a simple string.  If you instead saved the function, you'd have to use

+Pickle for serialization, which has many drawbacks.")

+    (license license:expat)))