Unable to run EAF on NixOS under Sway

[onyxrain]

Describe the bug Attempting to use EAF under NixOS results in EAF buffers appearing blank. For example, when trying to use eaf-open-browser, the resulting buffer is blank.

To Reproduce

1. Add the following to your NixOS config (derived from the wiki page):

environment.variables = {
  QT_QPA_PLATFORM_PLUGIN_PATH = "${pkgs.qt6.qtwayland.outPath}/lib/qt-6/plugins/platforms";
};

environment.systemPackages = with pkgs; [
  git
  nodejs
  wmctrl
  jshon
  aria
  (python3.withPackages (p: with p; [
    pandas
    requests
    pyqt6 sip qtpy qt6.qtwebengine epc lxml pyqt6-webengine
    pysocks
    pymupdf
    markdown
  ]))
];

2. Clone and then install EAF with ./install-eaf.py --ignore-core-deps
3. Load EAF into Emacs as instructed and then M-x eaf-open-browser.

Expected behavior EAF renders correctly.

Versions (please complete the following info):

• Distro and DE/WM: NixOS + Sway
• Versions of Dependencies:
  • Python 3.10.9
  • PyQt6 6.4.0
  • jshon 20131105
  • wmctrl 1.07
  • qtbase 6.4.1
  • qtwayland 6.4.1
• M-x emacs-version: GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.35, cairo version 1.16.0)

Error logs

qt.qpa.wayland: Failed to load client buffer integration: "wayland-egl"
qt.qpa.wayland: Available client buffer integrations: QList()
qt.webenginecontext: 

GL Type: disabled
Surface Type: DefaultRenderableType
Surface Profile: NoProfile
Surface Version: 2.0
QSG RHI Backend: OpenGL
Using Supported QSG Backend: yes
Using Software Dynamic GL: no
Using Multithreaded OpenGL: no

Init Parameters:
  *  application-name eaf.py 
  *  browser-subprocess-path /nix/store/4wka7snl0hvapzbzskj07y99vn27crs7-qtwebengine-6.4.1/libexec/QtWebEngineProcess 
  *  disable-features ConsolidatedMovementXY,InstalledApp,BackgroundFetch,WebOTP,WebPayments,WebUSB,PictureInPicture 
  *  disable-gpu  
  *  disable-setuid-sandbox  
  *  disable-speech-api  
  *  enable-features NetworkServiceInProcess,TracingServiceInProcess 
  *  enable-threaded-compositing  
  *  in-process-gpu  
  *  use-gl disabled 

QRhiGles2: Failed to create temporary context
QRhiGles2: Failed to create context
Failed to create QRhi for QBackingStoreRhiSupport
QRhiGles2: Failed to create temporary context
QRhiGles2: Failed to create context
Failed to create QRhi for QBackingStoreRhiSupport
QQuickWidget: Failed to get a QRhi from the top-level widget's window
QRhiGles2: Failed to create temporary context
QRhiGles2: Failed to create context
Failed to create QRhi for QBackingStoreRhiSupport
QQuickWidget: Failed to get a QRhi from the top-level widget's window
QQuickWidget::resizeEvent() no QRhi
QQuickWidget: Attempted to render scene with no rhi
No suitable graphics backend found

Error with Permissions-Policy header: Origin trial controlled feature not enabled: 'interest-cohort'.
QQuickWidget: Attempted to render scene with no rhi
Error with Permissions-Policy header: Origin trial controlled feature not enabled: 'interest-cohort'.
[EAF] Browser https://duckduckgo.com/ loading time: 3.0081546306610107s

Screenshots N/A

Additional context The reason for setting QT_QPA_PLATFORM_PLUGIN_PATH is as described on the NixOS wiki page, albeit for the Wayland platform plugin rather than xcb. I know this is more of a NixOS problem than EAF's fault, but I'd love to try out EAF on NixOS and I'm stuck on Wayland for HiDPI. Thanks!