Next, you need a new package called "python-pikepdf". PKGBUILD: https://pastebin.com/hYRVaiqT
Patch file "pybind11.patch": https://pastebin.com/7BqByXUa
This package does not yet exist in Arch, feel free to create it.
The patch will throw out install_requires and introduce pybind11 as a setup_requires item. Otherwise, this library somehow can't find pybind11 and will quit with a backtrace.
Pinned Comments
fbrennan commented on 2023-05-12 22:54 (UTC)
The flag was invalid and has been removed with no action taken as no new version was released. There's nothing to do for this package; no new release has been made. Rebuild, as @eclairevoyant has said.