gnu: Add python-fontmath.

* gnu/packages/fontutils.scm (python-fontmath): New variable.

gnu/packages/fontutils.scm

@@ -57,6 +57,7 @@ (define-module (gnu packages fontutils)
   #:use-module (gnu packages perl)
   #:use-module (gnu packages pkg-config)
   #:use-module (gnu packages python)
+  #:use-module (gnu packages python-build)
   #:use-module (gnu packages python-xyz)
   #:use-module (gnu packages sqlite)
   #:use-module (gnu packages webkit)
@@ -131,6 +132,30 @@ (define-public opentype-sanitizer
 them as it goes.")
     (license license:bsd-3)))
 
+(define-public python-fontmath
+  (package
+    (name "python-fontmath")
+    (version "0.9.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "fontMath" version ".zip"))
+       (sha256
+        (base32 "001756zxn2386dm4svgqjgw5026hvyacxl09b2qlk7s06phpcphw"))))
+    (build-system python-build-system)
+    (propagated-inputs (list python-fonttools))
+    (native-inputs
+     (list python-setuptools-scm
+           python-pytest
+           python-pytest-runner
+           python-wheel
+           unzip))
+    (home-page "https://github.com/robotools/fontMath")
+    (synopsis "Fast font mathematical operations library")
+    (description "This package provides a set of objects for performing fast
+font, glyph, etc. mathematical operations on font data.")
+    (license license:expat)))
+
 (define-public python-opentype-sanitizer
   (package
     (name "python-opentype-sanitizer")