qt6.wrapQtAppsHook: remove dependencies: qtbase qtwayland

[milahu]

Description of changes

fix #174828

make dependencies explicit to reduce closure size for cli apps

qt cli apps: buildInputs = [ qtbase ];

qt gui apps: buildInputs = [ qtbase qtwayland ];

qt wrappers like pyqt or pyside: ?

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandbox = true set in nix.conf? (See Nix manual)
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 22.05 Release Notes (or backporting 21.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
  • (Release notes changes) Ran nixos/doc/manual/md-to-db.sh to update generated release notes
• Fits CONTRIBUTING.md.

[NickCao]

A second thought on this lead me to believe that qtbase thould be removed from deps too. The hook itself does not require qtbase as a dep.

[NickCao]

A clean separation between the hook which runs on the buildPlatform, and qtbase on the hostPlatform would also make cross compilations eaiser, without having to deal with splicing and friends.

[milahu]

yes

also tdesktop would have failed because dontWrapQtApps = true;

[nrdxp]

So this doesn't have the advertised affect, and so perhaps this should be reverted, unless/until we find the problem.

x-ref: #177530 (comment)

If we do revert, we should make sure qtwayland is only added on linux.

[SuperSandro2000]

So this doesn't have the advertised affect, and so perhaps this should be reverted, unless/until we find the problem.

It has at least one effect: It reduces closure size and I would like to keep that.

If qtwayland needs to be added back to the hook, we should think about an extra hook or make qtwayland optional.

[FlorianFranzen]

Can we please remove the 'xcb' backends as well, as it bloats all qt derivations for me on wayland.

As a matter of fact why do we not remove all platform plugin. Per default that seems to be eglfs, linuxfb, minimal, minimalegl, offscreen, vkkhrdisplay, vnc and xcb, so there is still a lot of bloat to remove.

It might force users to rebuild all qt applications if they want to use qt at all, but it makes the derivation very small, which seems the main goal here. It is their fault to choose to run a bloaty graphical user interface to begin with.