Doesn't start on nixos (for me)

[0x53A]

When I clone the repo and start it, I get the "introduction", but the main app doesn't open. This seems to be related to QT and OpenGL contexts.

Here is the console output of a non-working run:

  lukas@nixos ~/s/vesc_tool (master)> nix run
  qt.qpa.wayland: EGL not available
  Warning: fallback to QtQuick software backend.
  kf.i18n: KLocalizedString: Using an empty domain, fix the code. msgid: "&Yes" msgid_plural: "" msgctxt: "@action:button"
  kf.i18n: KLocalizedString: Using an empty domain, fix the code. msgid: "&No" msgid_plural: "" msgctxt: "@action:button"
  failed to acquire GL context to resolve capabilities, using defaults..
  kf.i18n: KLocalizedString: Using an empty domain, fix the code. msgid: "&Yes" msgid_plural: "" msgctxt: "@action:button"
  kf.i18n: KLocalizedString: Using an empty domain, fix the code. msgid: "&Yes" msgid_plural: "" msgctxt: "@action:button"
  kf.i18n: KLocalizedString: Using an empty domain, fix the code. msgid: "&No" msgid_plural: "" msgctxt: "@action:button"
  qrc:/mobile/SetupWizardIMU.qml:89:5: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax instead: function onFoo(<arguments>) { ... }
  qrc:/mobile/SetupWizardFoc.qml:656:21: QML TabButton: Binding loop detected for property "width"
  qrc:/mobile/SetupWizardFoc.qml:656:21: QML TabButton: Binding loop detected for property "width"
  qrc:/mobile/SetupWizardFoc.qml:656:21: QML TabButton: Binding loop detected for property "width"
  qrc:/mobile/SetupWizardFoc.qml:656:21: QML TabButton: Binding loop detected for property "width"
  qrc:/mobile/SetupWizardFoc.qml:640:13: QML TabBar: Binding loop detected for property "implicitWidth"
  qrc:/mobile/SetupWizardFoc.qml:640:13: QML TabBar: Binding loop detected for property "implicitWidth"
  qrc:/mobile/SetupWizardFoc.qml:640:13: QML TabBar: Binding loop detected for property "implicitWidth"
  qrc:/mobile/SetupWizardFoc.qml:640:13: QML TabBar: Binding loop detected for property "implicitWidth"
  qrc:/mobile/SetupWizardFoc.qml:656:21: QML TabButton: Binding loop detected for property "width"
  Could not load package archive resource. Please update the archive in order to use VESC packages.
  QFSFileEngine::open: No file name specified
  QFSFileEngine::open: No file name specified
  Param group "gpd" not found.
  WARNING (qrc:/mobile/Profiles.qml:91 ): qrc:/mobile/Profiles.qml:91:5: QML Dialog: Binding loop detected for property "implicitHeight"
  WARNING (qrc:/res/qml/WelcomeQmlPanel.qml:118 ): qrc:/res/qml/WelcomeQmlPanel.qml:118:5: QML Dialog: Binding loop detected for property "implicitHeight"
  WARNING (qrc:/mobile/SetupWizardFoc.qml:826 ): qrc:/mobile/SetupWizardFoc.qml:826:5: QML Dialog: Binding loop detected for property "implicitHeight"
  WARNING (qrc:/mobile/SetupWizardFoc.qml:767 ): qrc:/mobile/SetupWizardFoc.qml:767:5: QML Dialog: Binding loop detected for property "implicitHeight"
  WARNING (qrc:/mobile/SetupWizardFoc.qml:725 ): qrc:/mobile/SetupWizardFoc.qml:725:5: QML Dialog: Binding loop detected for property "implicitHeight"
  WARNING (qrc:/res/qml/WelcomeQmlPanel.qml:449 ): qrc:/res/qml/WelcomeQmlPanel.qml:449:5: QML Dialog: Binding loop detected for property "implicitHeight"
  WARNING (qrc:/mobile/SetupWizardFoc.qml:826 ): qrc:/mobile/SetupWizardFoc.qml:826:5: QML Dialog: Binding loop detected for property "implicitHeight"
  WARNING (qrc:/mobile/SetupWizardFoc.qml:767 ): qrc:/mobile/SetupWizardFoc.qml:767:5: QML Dialog: Binding loop detected for property "implicitHeight"
  WARNING (:0 ): composeAndFlush: QOpenGLContext creation failed
  WARNING (:0 ): composeAndFlush: makeCurrent() failed
  WARNING (:0 ): composeAndFlush: makeCurrent() failed
  WARNING (:0 ): composeAndFlush: makeCurrent() failed

With the help of AI I've got it working, this is the diff:

lukas@nixos ~/s/vesc_tool (master)> git diff --staged
diff --git a/pkgs/vesc-tool/default.nix b/pkgs/vesc-tool/default.nix
index 8e97296..a35960e 100644
--- a/pkgs/vesc-tool/default.nix
+++ b/pkgs/vesc-tool/default.nix
@@ -13,7 +13,10 @@
   cmake,
   copyDesktopItems,
   gcc-arm-embedded-7,
+  libgbm,
+  libGL,
   libsForQt5,
+  mesa,
   makeDesktopItem,
   stdenv,
   tree,
@@ -90,7 +93,16 @@ stdenv.mkDerivation {
     runHook postInstall
   '';

-  buildInputs = [ libsForQt5.qtbase ];
+  buildInputs = [
+    libGL
+    libsForQt5.qtbase
+    libsForQt5.qtwayland
+  ];
+
+  qtWrapperArgs = [
+    "--prefix LD_LIBRARY_PATH : ${lib.makeLibraryPath [ mesa libgbm ]}"
+    "--set __EGL_VENDOR_LIBRARY_DIRS ${mesa}/share/glvnd/egl_vendor.d"
+  ];

   nativeBuildInputs = [
     cmake

I could send a PR with that change, but I'm not sure what the qtWrapperArgs exactly do (without them it doesn't work)