gnu: Add python-pydyf.

* gnu/packages/pdf.scm (python-pydyf): New variable.

gnu/packages/pdf.scm

@@ -20,7 +20,7 @@
 ;;; Copyright © 2020-2022 Nicolas Goaziou <mail@nicolasgoaziou.fr>
 ;;; Copyright © 2020 Michael Rohleder <mike@rohleder.de>
 ;;; Copyright © 2020 Timotej Lazar <timotej.lazar@araneo.si>
-;;; Copyright © 2020 Maxim Cournoyer <maxim.cournoyer@gmail.com>
+;;; Copyright © 2020, 2022 Maxim Cournoyer <maxim.cournoyer@gmail.com>
 ;;; Copyright © 2021 Maxime Devos <maximedevos@telenet.be>
 ;;;
 ;;; This file is part of GNU Guix.
@@ -701,6 +701,33 @@ (define-public podofo
 extracting content or merging files.")
     (license license:lgpl2.0+)))
 
+(define-public python-pydyf
+  (package
+    (name "python-pydyf")
+    (version "0.1.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "pydyf" version))
+       (sha256
+        (base32 "0b30g3hhxw1bg18r9ax85i1dkg8vy1y1wzas0bg0bxblh7j5sbqy"))))
+    (build-system python-build-system)
+    (arguments
+     (list
+      #:phases
+      #~(modify-phases %standard-phases
+          (replace 'check
+            (lambda* (#:key tests? #:allow-other-keys)
+              (when tests?
+                (invoke "pytest" "-vv" "-c" "/dev/null")))))))
+    (propagated-inputs (list python-pillow))
+    (native-inputs (list ghostscript python-pytest))
+    (home-page "https://github.com/CourtBouillon/pydyf")
+    (synopsis "Low-level PDF generator")
+    (description "@code{pydyf} is a low-level PDF generator written in Python
+and based on PDF specification 1.7.")
+    (license license:bsd-3)))
+
 (define-public mupdf
   (package
     (name "mupdf")