README.md

Demonstration of QML with Qt5 + qmake + nix

If you have nix installed compile and run with:

$ nix build
$ ./result/bin/demo 

Explaination: we load the .qml file with qrc:///main.qml: it uses for that the file qml.qrc (the name is not important) that lists the resource files. This 'qml.qrc file is then given to RESOURCES in demo.pro in order to compile the resources and include them in the final binary.

demo.pro

SOURCES += main.cpp
TEMPLATE = app
RESOURCES += qml.qrc
QT += qml
TARGET = demo
isEmpty(PREFIX) {
    PREFIX = /usr/local
}

# install the binary
target.path = $$PREFIX/bin
INSTALLS += target

derivation_demo.nix

{ lib
, stdenv
, qmake
, qt5
, wrapQtAppsHook
}:
stdenv.mkDerivation rec {
  pname = "";
  version = "";

  src = ./.;
  nativeBuildInputs = [ qmake wrapQtAppsHook ];
  buildInputs = [
    qt5.full
  ];
}

flake.lock

{
  "nodes": {
    "nixpkgs": {
      "locked": {
        "lastModified": 1668650906,
        "narHash": "sha256-JuiYfDO23O8oxUUOmhQflmOoJovyC5G4RjcYQMQjrRE=",
        "owner": "NixOS",
        "repo": "nixpkgs",
        "rev": "3a86856a13c88c8c64ea32082a851fefc79aa700",
        "type": "github"
      },
      "original": {
        "id": "nixpkgs",
        "type": "indirect"
      }
    },
    "root": {
      "inputs": {
        "nixpkgs": "nixpkgs"
      }
    }
  },
  "root": "root",
  "version": 7
}

flake.nix

{
  description = "A very basic flake";

  outputs = { self, nixpkgs }: let
    pkgs = nixpkgs.legacyPackages.x86_64-linux;
  in {

    packages.x86_64-linux.default = pkgs.libsForQt5.callPackage ./derivation_demo.nix {};

  };
}

main.cpp

//https://riptutorial.com/qml/example/14475/creating-a-qtquick-window-from-cplusplus
#include <QGuiApplication>
#include <QQmlApplicationEngine>

int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);

    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:///main.qml")));
	    
    return app.exec();
}

main.qml

import QtQuick 2.5
import QtQuick.Window 2.2

Window { // Must be this type to be loaded by QQmlApplicationEngine.
    visible: true
    title: qsTr("Hello World")
    Text {
        text: qsTr("Hello World")
        anchors.centerIn: parent
    }
}

qml.qrc

<RCC>
    <qresource prefix="/">
        <file>main.qml</file>
    </qresource>
</RCC>

im getting this error:

libGL error: MESA-LOADER: failed to open iris: /nix/store/vnwdak3n1w2jjil119j65k8mw1z23p84-glibc-2.35-224/lib/libc.so.6: version `GLIBC_2.36' not found (required by /nix/store/98sq0hkrbda37k9iayqdqchkibp8530y-llvm-15.0.7-lib/lib/libLLVM-15.so) (search paths /run/opengl-driver/lib/dri, suffix _dri)
libGL error: failed to load driver: iris
libGL error: MESA-LOADER: failed to open iris: /nix/store/vnwdak3n1w2jjil119j65k8mw1z23p84-glibc-2.35-224/lib/libc.so.6: version `GLIBC_2.36' not found (required by /nix/store/98sq0hkrbda37k9iayqdqchkibp8530y-llvm-15.0.7-lib/lib/libLLVM-15.so) (search paths /run/opengl-driver/lib/dri, suffix _dri)
libGL error: failed to load driver: iris
libGL error: MESA-LOADER: failed to open swrast: /nix/store/vnwdak3n1w2jjil119j65k8mw1z23p84-glibc-2.35-224/lib/libc.so.6: version `GLIBC_2.36' not found (required by /nix/store/98sq0hkrbda37k9iayqdqchkibp8530y-llvm-15.0.7-lib/lib/libLLVM-15.so) (search paths /run/opengl-driver/lib/dri, suffix _dri)
libGL error: failed to load driver: swrast
QGLXContext: Failed to create dummy context
Failed to create OpenGL context for format QSurfaceFormat(version 2.0, options QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize 24, redBufferSize -1, greenBufferSize -1, blueBufferSize -1, alphaBufferSize -1, stencilBufferSize 8, samples -1, swapBehavior QSurfaceFormat::DoubleBuffer, swapInterval 1, colorSpace QSurfaceFormat::DefaultColorSpace, profile  QSurfaceFormat::NoProfile)
fish: Job 1, 'result/bin/demo' terminated by signal SIGABRT (Abort)

do you know whats going on?
i already tried switching to nixpkgs/release-22.11 and changing the qt version to the newer qt6