qcoro: 0.4.0 -> 0.6.0

[puffnfresh]

And fix compilation on aarch64 by supplying GCC 11.

Description of changes

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/)
• 22.11 Release Notes (or backporting 22.05 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.

[syvb]

Result of nixpkgs-review pr 185191 run on x86_64-linux 1

4 packages marked as broken and skipped:

• libsForQt512.neochat
• libsForQt512.spacebar
• libsForQt514.neochat
• libsForQt514.spacebar

1 package failed to build:

• libsForQt512.qcoro

4 packages built:

• libsForQt5.neochat (libsForQt515.neochat ,plasma5Packages.neochat)
• libsForQt5.qcoro (libsForQt515.qcoro ,plasma5Packages.qcoro)
• libsForQt5.spacebar (libsForQt515.spacebar ,plasma5Packages.spacebar)
• libsForQt514.qcoro

[SuperSandro2000]

Suggested change

	mkDerivation rec {
	stdenv.mkDerivation rec {

[samueldr]

@puffnfresh it looks like the packages depending on qcoro also need to use GCC11. Else they, too, fail with:

g++: error: unrecognized command line option '-fcoroutines'

I also think using gcc11Stdenv is the proper way to go. Yes we're losing some niceties from the Qt5 mkderivation, but uh, that's how the cookie crumbles.

I want you to check the changes here, if you think they're alright (or if a few days pass) we can push this to this PR and merge. Tested to build and run on x86_64 and aarch64.

• master...samueldr:nixpkgs:wip/qcoro-aarch64-fixups