Nix: revert to using CMake, drop ninja

[fufexan]

Describe your PR, what does it fix/add?

Revert #7774 and #7778.
Reason: CMake + Makefile + Mold builds the fastest out of the tested configurations. See #7774 (comment) for an ugly graph.

Also use stdenvAdapters.keepDebugInfo when debug is enabled, and handle applying all configured adapters. done on main

devShell now inherits the default package's stdenv so that it only needs to be set in nix/overlays.nix. done on main

Is there anything you want to mention? (unchecked code, possible bugs, found problems, breaking compatibility, etc.)

CC: @JohnRTitor @diniamo @NotAShelf

Is it ready for merging, or does it need work?

Should be ready.

[NotAShelf]

diff lgtm

I'd like to propose waiting a few days before a merge for testing, to make sure jo new bugs are introduced

[fufexan]

@NotAShelf are you gonna test?

[NotAShelf]

I will tomorrow or on monday. Currently travelling and my pc is all packed up.

[JohnRTitor]

Tested with

diff --git a/flake.nix b/flake.nix
index 706c330..8db9dfd 100644
--- a/flake.nix
+++ b/flake.nix
@@ -28,7 +28,7 @@
     nix-flatpak.url = "github:gmodena/nix-flatpak/v0.4.1"; # Declarative Flatpak support for NixOS
 
     ## DESKTOP ENVIRONMENT ##
-    hyprland.url = "git+https://github.com/hyprwm/Hyprland?submodules=1"; # Hyprland, a Wayland WM, use git submodules too
+    hyprland.url = "git+https://github.com/hyprwm/Hyprland?ref=refs/pull/7784/merge&submodules=1"; # Hyprland, a Wayland WM, use git submodules too
     rose-pine-hyprcursor.url = "github:ndom91/rose-pine-hyprcursor";
 
     ## MISC PACKAGES ##

[fufexan]

@NotAShelf have you had a chance to test this?

[NotAShelf]

I forgot about it, thanks for the reminder. Will test it this evening (roughly 2-3 hours tops?)

[NotAShelf]

Build seems fine, I see nothing out of ordinary while running Hyprland either.

LGTM

[leiserfg]

@fufexan how are you building in a nix shell? after the cmake 0.30 requirement I can't use make build anymore so it became harder to contribute.

[fufexan]

@fufexan how are you building in a nix shell? after the cmake 0.30 requirement I can't use make build anymore so it became harder to contribute.

If you're in a bash nix develop shell, you can run patchPhase to apply the relevant patches. Then you can run whatever else.

[fufexan]

Looking at CI, it seems Meson builds 2 minutes faster than CMake (and I haven't added mold to it yet)
https://github.com/hyprwm/Hyprland/actions/runs/10927442884/job/30333607100 (main branch)
https://github.com/hyprwm/Hyprland/actions/runs/10861533522/job/30143545391?pr=7784 (this PR)

[vaxerski]

gh CI is not reliable to time stuff especially if its just 1 run

[fufexan]

Nor is my laptop for that matter, we need an isolated machine to run proper tests.