Hi!

I’m writing from a phone, please excuse bad formatting. 

ERROR Missing dependencies:

    sphinx
    roman-numerals>=1.0.0
==> ERROR: A failure occurred in build().
    Aborting...
    ERROR Missing dependencies:
    sphinx

There’s the error message. Do you have ‘python-sphinx’ in ‘makesepends’?

I am using the PKGBUILD file from the git packaging repos

This one?

https://gitlab.archlinux.org/archlinux/packaging/packages/python-dbus-deviation/-/blob/main/PKGBUILD?ref_type=heads

Kind regards,
Edmund