The pinned pycairo builds from source everywhere, and the sdist needs
cairo.pc. Fedora, mageia and the debian/ubuntu maps list the headers
explicitly; suse relied on gobject-introspection-devel pulling
pkgconfig(cairo) transitively, which the current Tumbleweed image no
longer does, so the opensuse/tumbleweed install gate now fails at
"Dependency cairo not found" during pycairo metadata generation.
void, solus and alpine have the same latent gap; each gets the same
package spelled in its own convention.
Co-authored-by: Jatin K Malik <jatinkrmalik@gmail.com>
