01/02: gnu: Add python-lazy-loader.

[guix-commits]

arunisaac pushed a commit to branch master
in repository guix.

commit 8c655cec9d7b8e7a75e8715249e36586d2c666d3
Author: Arun Isaac <arunisaac@systemreboot.net>
AuthorDate: Thu Jun 29 15:54:12 2023 +0100

    gnu: Add python-lazy-loader.
    
    * gnu/packages/python-xyz.scm (python-lazy-loader): New variable.
---
 gnu/packages/python-xyz.scm | 30 +++++++++++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index f6f34c12b4..c4105c4685 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -29,7 +29,7 @@
 ;;; Copyright © 2016-2022 Marius Bakke <marius@gnu.org>
 ;;; Copyright © 2016, 2017, 2021, 2022 Stefan Reichör <stefan@xsteve.at>
 ;;; Copyright © 2016, 2017, 2019 Alex Vong <alexvong1995@gmail.com>
-;;; Copyright © 2016, 2017, 2018, 2021, 2022 Arun Isaac 
<arunisaac@systemreboot.net>
+;;; Copyright © 2016–2018, 2021–2023 Arun Isaac <arunisaac@systemreboot.net>
 ;;; Copyright © 2016, 2017, 2018, 2020, 2021 Julien Lepiller 
<julien@lepiller.eu>
 ;;; Copyright © 2016–2022 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2016, 2017 Thomas Danckaert <post@thomasdanckaert.be>
@@ -19137,6 +19137,34 @@ feels like an AST.")
 inspection of types defined in the Python standard typing module.")
     (license license:expat)))
 
+(define-public python-lazy-loader
+  (package
+    (name "python-lazy-loader")
+    (version "0.2")
+    (source (origin
+              (method url-fetch)
+              (uri (pypi-uri "lazy_loader" version))
+              (sha256
+               (base32
+                "12piaj94m5wbx33cxb80xgnsvzgya6cp90zj12qsq064fm8pmp0f"))))
+    (build-system pyproject-build-system)
+    (native-inputs
+     (list python-pytest python-pytest-cov))
+    (propagated-inputs
+     (list python-flit-core))
+    (home-page "https://scientific-python.org/specs/spec-0001/";)
+    (synopsis "Load subpackages and functions on demand")
+    (description "@code{python-lazy-loader} makes it easy to load subpackages
+and functions on demand.  Its main features are:
+
+@itemize
+@item Allow subpackages to be made visible to users without incurring import
+costs.
+@item Allow external libraries to be imported only when used, improving import
+times.
+@end itemize")
+    (license license:bsd-3)))
+
 (define-public python-lazy-object-proxy
   (package
     (name "python-lazy-object-proxy")