Same issue, but with setuptools scm 8.2.0 now.

python-setuptools-scm was updated to 8.1.0 which glyphsets explicitly excludes in its setup.py, consequently, this PKGBUILD fails. However, I found that builds succeed just fine if the setup.py is patched:

diff --unified --recursive --text a/setup.py b/setup.py
--- a/setup.py  2024-05-03 11:49:24.000000000 +0200
+++ b/setup.py  2024-05-20 09:27:00.893688795 +0200
@@ -60,7 +60,7 @@
         "Programming Language :: Python :: 3",
     ],
     python_requires=">=3.8",
-    setup_requires=["setuptools_scm>=8.0.4,<8.1"],
+    setup_requires=["setuptools_scm>=8.0.4"],
     install_requires=[
         "requests",
         "setuptools",

Could you update the PKGBUILD? Thanks!