Offline installation is not possible to due build script

[theCapypara]

The build script added a pip install command. This breaks offline installation and also ignores any other setting passed to any parent pip command that was installing cairocffi in the first place.

cairocffi/utils/build.py

Line 22 in b48a5b3

subprocess.run([str(pip), 'install', 'xcffib'])

The reason it breaks is because even though the exception is caught, an Exception during the installation there means that cffi is not installed and then the exec_module a few lines later fails, causing the entire build to fail.

cairocffi should really not call pip inside of it's build script.

[nanonyme]

It sounds to me this is incorrect definition of build dependencies. This project should be declaring xcffib in

cairocffi/pyproject.toml

Line 2 in b48a5b3

requires = ["setuptools >= 61.0.0", "cffi >= 1.1.0"]

rather than installing it manually with pip

[liZe]

This will be fixed by the in-line branch.