Support Wayland with Linux wheels

Currently, the Linux wheels are built on the manylinux2010 image with a few more X11-related libraries (libXinerama, libXrandr, libXcursor and libXi). This works well for X11 users, but on Wayland users still need to install the GLFW shared library themselves. Ideally, the Linux wheels would allow users of both X11 and Wayland to run GLFW without installing additional packages.

As far as I know, the wheel platform tags are all for X11 based systems so far. I’m not aware of any Wayland support for CentOS 6, which manylinux2010 is based on. manylinux2014 is based on CentOS 7, which seems to have some Wayland support, though it’s not the default.

• Find out how stable the Wayland libraries are and whether a GLFW library built on manylinux2014 with Wayland packages would work on a more modern Wayland system, e.g. Ubuntu 19.04 or Archlinux
• Change the library search to allow for two GLFW libraries to be included in a wheel
• Change the library search to ensure the correct GLFW library will be loaded, depending on the current X11 or Wayland session, for users who have installed both libraries’ dependencies
• Update the GitLab CI config to build both Wayland and X11 based libraries and package them in a single wheel

[FlorianRhiem]

I’ve released this as part of version 1.11.0.

[almarklein]

This approach looks sound to me!