bug#65774: python updater clears inputs, leaves propagated-inputs empty

[Maxim Cournoyer]

Hi,

I've had the Python updater produce this when attempting to update
fontmake:

gnu/packages/fontutils.scm:780:2: warning: fontmake: 'propagated-inputs'
field not found; leaving it unchanged

gnu/packages/fontutils.scm:780:2: warning: fontmake: expected
'propagated-inputs' value: (python-attrs python-fontmath
python-fonttools python-glyphslib python-ufo2ft python-ufolib2)

--8<---------------cut here---------------start------------->8---
modified   gnu/packages/fontutils.scm
@@ -779,16 +779,16 @@ (define-public psautohint-font-data
 (define-public fontmake
   (package
     (name "fontmake")
-    (version "3.4.0")
+    (version "3.7.1")
     (source (origin
               (method url-fetch)
               (uri (pypi-uri "fontmake" version ".zip"))
               (sha256
                (base32
-                "0fc5c9csjpy1aa4c03p7nvjgls5wjplhmmf42n0cmvrlh6cm7wl3"))))
+                "0ib7fvwgwazm7qfj4a3rkqkb40xfbj40rnvsmkvl2isg2ky3vg9m"))))
     (build-system python-build-system)
-    (inputs (list python-fontmath python-glyphslib))
-    (native-inputs (list unzip python-setuptools-scm))
+    (inputs (list))
+    (native-inputs (list zip))
     (home-page "https://github.com/googlefonts/fontmake";)
     (synopsis
      "Compile fonts from sources (UFO, Glyphs) to binary (OpenType, TrueType)")
--8<---------------cut here---------------end--------------->8---

The choice of using inputs here was conscious, as it is a command, not a
library.  Perhaps it could check if the name starts with 'python-' or
not?  It's a bit 'magic', but it would help.

-- 
Thanks,
Maxim