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Thank you, it works with glm 1.0.2-1!

You need to install glm-git and then rebuild this package with it. Afterwards it works:

>>> from pyglm.glm import *
>>> 

Good news is that 1.0.2 released upstream, so once glm is updated, this should be fixed.

No matter whether I have installed extra/glm or glm-git: If I install this package (version 2025-08-11) and ask for from pyglm.glm import *, I receive the following error:

Traceback (most recent call last):
  File "<python-input-0>", line 1, in <module>
    from pyglm.glm import *
  File "/usr/lib/python3.13/site-packages/pyglm/__init__.py", line 1, in <module>
    from . import glm
ImportError: /usr/lib/python3.13/site-packages/pyglm/glm.cpython-313-x86_64-linux-gnu.so: undefined symbol: _ZN3glm21infinitePerspectiveLHIfEENS_3matILi4ELi4ET_LNS_9qualifierE0EEES2_S2_S2_

@groctel is it necessary to prefer glm-git over extra/glm ?

edit: yes it is. https://github.com/Zuzu-Typ/PyGLM/issues/269

This failure is blocking the dependencies for python-moderngl-window. I've taken a look at the PKGBUILD and I've produced a patch to fix this and other things:

diff --git a/PKGBUILD b/PKGBUILD
index b31da77..13f09cb 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -3,41 +3,28 @@
 # what: PyGLM

 pkgname='python-pyglm'
-pkgver='2.7.3'
+pkgver='2.8.2'
 pkgrel=1
 pkgdesc="OpenGL Mathematics library for Python"
 url="https://github.com/Zuzu-Typ/PyGLM"
-depends=('python')
-makedepends=('python-setuptools' 'git')
-license=('ZLIB')
-arch=('any')
-source=(
-    "$pkgname::git+https://github.com/Zuzu-Typ/PyGLM.git#tag=$pkgver"
-    "pyglm-typing::git+https://github.com/esoma/pyglm-typing.git"
-    "glm::git+https://github.com/Zuzu-Typ/glm.git"
+depends=('glm-git' 'python')
+makedepends=(
+    'python-build'
+    'python-installer'
+    'python-setuptools'
+    'python-wheel'
 )
-sha256sums=('b9b968b15859d8e40502c935dd77a9851c7710e0d0841a73d7390df634099c47'
-            'SKIP'
-            'SKIP')
-
-prepare() {
-    local mod
-
-    cd "$srcdir/$pkgname"
-    git submodule init
-    for mod in glm pyglm-typing; do
-        git config "submodule.$mod.url" "$srcdir/$mod"
-    done
-
-    git -c protocol.file.allow=always submodule update
-}
+license=('Zlib')
+arch=('x86_64')
+source=("$pkgname::git+https://github.com/Zuzu-Typ/PyGLM.git#tag=$pkgver")
+sha256sums=('d26ecc224b11b12fc4d90465917dbac966448bec6245bebe09d004b0e0ae2c67')

 build() {
     cd "$srcdir/$pkgname"
-    CFLAGS="$CFLAGS -Wno-all" python setup.py build
+    CFLAGS="$CFLAGS -Wno-all" python -m build --wheel --no-isolation
 }

 package() {
     cd "$srcdir/$pkgname"
-    python setup.py install --root="${pkgdir}" --optimize=1 --skip-build
+    python -m installer --destdir="$pkgdir" --compile-bytecode=1 dist/*.whl
 }

This fixes the following things:

• Bumps the pkgver to the latest release.
• Changes the licence string to an SPDX-compliant one.
• Changes arch to x86_64 as this builds a binary package.
• Removes the manual submodule download, instead using the package-provided ones.
• Removes prepare() as it's not required as per last point.

UPDATE: After discussing it with the PyGLM developer, I updated the patch to also include these improvements:

• Updates to 2.8.2 (original patch was 2.8.1).
• Upgrades Python build system to not use setup.py.

Cheers!

that specific commit was removed from upstream

fbc534be6

Does anyone know how to fix this?

It errors, outputting this:
fatal: Fetched in submodule path 'glm', but it did not contain fbc534be62f8c785db989f8ae7526edf6d0dc306. Direct fetching of that commit failed.

Any clue what that might be?

PyGLM 2.6.0 fails to build. This fatal error happens during the build step:

Traceback (most recent call last):
  File "/tmp/makepkg/python-pyglm/src/PyGLM-2.6.0/setup.py", line 33, in <module>
    shutil.copy2("pyglm-typing/src/glm_typing/__init__.py", "glm-stubs/glm_typing.py")
  File "/usr/lib/python3.10/shutil.py", line 434, in copy2
    copyfile(src, dst, follow_symlinks=follow_symlinks)
  File "/usr/lib/python3.10/shutil.py", line 254, in copyfile
    with open(src, 'rb') as fsrc:
FileNotFoundError: [Errno 2] No such file or directory: 'pyglm-typing/src/glm_typing/__init__.py'