bug#73897: QT_PLUGIN_PATH is set by guix home and causes flameshot error

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bug#73897: QT_PLUGIN_PATH is set by guix home and causes flameshot error

From:	Rodrigo Morales
Subject:	bug#73897: QT_PLUGIN_PATH is set by guix home and causes flameshot error (Ubuntu 22.04.5 LTS)
Date:	Sat, 19 Oct 2024 21:07:48 -0500
I am using "guix home" for managing my dotfiles in Ubuntu 22.04.5 LTS.

I noticed that the environment variable =QT_PLUGIN_PATH= is set to paths 
contained within ~/.guix-home and ~/.guix-profile (see first code block below.) 
This created an error when trying to run the binary flameshot which was 
installed through =sudo apt install flameshot= (see second code block below.)

#+BEGIN_SRC text
$ env | grep -i qt
QT_ACCESSIBILITY=1
QT_IM_MODULE=ibus
QMAKEPATH=/home/rodrigo/.guix-home/profile/lib/qt5:/home/rodrigo/.guix-profile/lib/qt5
QT_PLUGIN_PATH=/home/rodrigo/.guix-home/profile/lib/qt5/plugins:/home/rodrigo/.guix-profile/lib/qt5/plugins
#+END_SRC

#+BEGIN_SRC text
$ flameshot gui ; echo Exit code: $?
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it 
was found.
This application failed to start because no Qt platform plugin could be 
initialized. Reinstalling the application may fix this problem.

Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, 
vnc, xcb, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx.

zsh: IOT instruction (core dumped)  flameshot gui
Exit code: 134
#+END_SRC

Let me explain how I found out that the problem was =QT_PLUGIN_PATH=: I printed 
debugging information when executing =flameshot= and I noticed that =flameshot= 
was trying to read some paths from =/gnu/store= which looked suspicious to me 
because =flameshot= had been installed through =sudo apt install flameshot=.

#+HEADER: :prologue "exec 2>&1"
#+HEADER: :epilogue ":"
#+BEGIN_SRC sh
which flameshot
QT_DEBUG_PLUGINS=1 flameshot
#+END_SRC

#+RESULTS:
#+begin_example
/usr/bin/flameshot
QFactoryLoader::QFactoryLoader() checking directory path 
"/gnu/store/gk4wzkfnav7g5bq4j55cqfw41298raqp-qtbase-5.15.10/lib/qt5/plugins/platforms"
 ...
QFactoryLoader::QFactoryLoader() looking at 
"/gnu/store/gk4wzkfnav7g5bq4j55cqfw41298raqp-qtbase-5.15.10/lib/qt5/plugins/platforms/libqeglfs.so"
Found metadata in lib 
/gnu/store/gk4wzkfnav7g5bq4j55cqfw41298raqp-qtbase-5.15.10/lib/qt5/plugins/platforms/libqeglfs.so,
 metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "eglfs"
        ]
    },
    "archreq": 0,
    "className": "QEglFSIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("eglfs")
QFactoryLoader::QFactoryLoader() looking at 
"/gnu/store/gk4wzkfnav7g5bq4j55cqfw41298raqp-qtbase-5.15.10/lib/qt5/plugins/platforms/libqlinuxfb.so"
Found metadata in lib 
/gnu/store/gk4wzkfnav7g5bq4j55cqfw41298raqp-qtbase-5.15.10/lib/qt5/plugins/platforms/libqlinuxfb.so,
 metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "linuxfb"
        ]
    },
    "archreq": 0,
    "className": "QLinuxFbIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("linuxfb")
QFactoryLoader::QFactoryLoader() looking at 
"/gnu/store/gk4wzkfnav7g5bq4j55cqfw41298raqp-qtbase-5.15.10/lib/qt5/plugins/platforms/libqminimal.so"
Found metadata in lib 
/gnu/store/gk4wzkfnav7g5bq4j55cqfw41298raqp-qtbase-5.15.10/lib/qt5/plugins/platforms/libqminimal.so,
 metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "minimal"
        ]
    },
    "archreq": 0,
    "className": "QMinimalIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("minimal")
QFactoryLoader::QFactoryLoader() looking at 
"/gnu/store/gk4wzkfnav7g5bq4j55cqfw41298raqp-qtbase-5.15.10/lib/qt5/plugins/platforms/libqminimalegl.so"
Found metadata in lib 
/gnu/store/gk4wzkfnav7g5bq4j55cqfw41298raqp-qtbase-5.15.10/lib/qt5/plugins/platforms/libqminimalegl.so,
 metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "minimalegl"
        ]
    },
    "archreq": 0,
    "className": "QMinimalEglIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("minimalegl")
QFactoryLoader::QFactoryLoader() looking at 
"/gnu/store/gk4wzkfnav7g5bq4j55cqfw41298raqp-qtbase-5.15.10/lib/qt5/plugins/platforms/libqoffscreen.so"
Found metadata in lib 
/gnu/store/gk4wzkfnav7g5bq4j55cqfw41298raqp-qtbase-5.15.10/lib/qt5/plugins/platforms/libqoffscreen.so,
 metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "offscreen"
        ]
    },
    "archreq": 0,
    "className": "QOffscreenIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("offscreen")
QFactoryLoader::QFactoryLoader() looking at 
"/gnu/store/gk4wzkfnav7g5bq4j55cqfw41298raqp-qtbase-5.15.10/lib/qt5/plugins/platforms/libqvnc.so"
Found metadata in lib 
/gnu/store/gk4wzkfnav7g5bq4j55cqfw41298raqp-qtbase-5.15.10/lib/qt5/plugins/platforms/libqvnc.so,
 metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "vnc"
        ]
    },
    "archreq": 0,
    "className": "QVncIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("vnc")
QFactoryLoader::QFactoryLoader() looking at 
"/gnu/store/gk4wzkfnav7g5bq4j55cqfw41298raqp-qtbase-5.15.10/lib/qt5/plugins/platforms/libqxcb.so"
Found metadata in lib 
/gnu/store/gk4wzkfnav7g5bq4j55cqfw41298raqp-qtbase-5.15.10/lib/qt5/plugins/platforms/libqxcb.so,
 metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "xcb"
        ]
    },
    "archreq": 0,
    "className": "QXcbIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("xcb")
QFactoryLoader::QFactoryLoader() checking directory path 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms" ...
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqeglfs.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqeglfs.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "eglfs"
        ]
    },
    "archreq": 0,
    "className": "QEglFSIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("eglfs")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqlinuxfb.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqlinuxfb.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "linuxfb"
        ]
    },
    "archreq": 0,
    "className": "QLinuxFbIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("linuxfb")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqminimal.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqminimal.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "minimal"
        ]
    },
    "archreq": 0,
    "className": "QMinimalIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("minimal")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqminimalegl.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqminimalegl.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "minimalegl"
        ]
    },
    "archreq": 0,
    "className": "QMinimalEglIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("minimalegl")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqoffscreen.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqoffscreen.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "offscreen"
        ]
    },
    "archreq": 0,
    "className": "QOffscreenIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("offscreen")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqvnc.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqvnc.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "vnc"
        ]
    },
    "archreq": 0,
    "className": "QVncIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("vnc")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqwayland-egl.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqwayland-egl.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "wayland-egl"
        ]
    },
    "archreq": 0,
    "className": "QWaylandEglPlatformIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("wayland-egl")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqwayland-generic.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqwayland-generic.so, 
metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "wayland"
        ]
    },
    "archreq": 0,
    "className": "QWaylandIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("wayland")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqwayland-xcomposite-egl.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqwayland-xcomposite-egl.so, 
metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "wayland-xcomposite-egl"
        ]
    },
    "archreq": 0,
    "className": "QWaylandXCompositeEglPlatformIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("wayland-xcomposite-egl")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqwayland-xcomposite-glx.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqwayland-xcomposite-glx.so, 
metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "wayland-xcomposite-glx"
        ]
    },
    "archreq": 0,
    "className": "QWaylandXCompositeGlxPlatformIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("wayland-xcomposite-glx")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "xcb"
        ]
    },
    "archreq": 0,
    "className": "QXcbIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("xcb")
QFactoryLoader::QFactoryLoader() checking directory path "/usr/bin/platforms" 
...
Cannot load library 
/gnu/store/gk4wzkfnav7g5bq4j55cqfw41298raqp-qtbase-5.15.10/lib/qt5/plugins/platforms/libqxcb.so:
 (/lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.38' not found (required by 
/gnu/store/5jvnagv0pnqmiw6cfbq0qz3gvf9jq6y3-fontconfig-minimal-2.14.0/lib/libfontconfig.so.1))
QLibraryPrivate::loadPlugin failed on 
"/gnu/store/gk4wzkfnav7g5bq4j55cqfw41298raqp-qtbase-5.15.10/lib/qt5/plugins/platforms/libqxcb.so"
 : "Cannot load library 
/gnu/store/gk4wzkfnav7g5bq4j55cqfw41298raqp-qtbase-5.15.10/lib/qt5/plugins/platforms/libqxcb.so:
 (/lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.38' not found (required by 
/gnu/store/5jvnagv0pnqmiw6cfbq0qz3gvf9jq6y3-fontconfig-minimal-2.14.0/lib/libfontconfig.so.1))"
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it 
was found.
This application failed to start because no Qt platform plugin could be 
initialized. Reinstalling the application may fix this problem.

Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, 
vnc, xcb, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx.

Aborted (core dumped)
#+end_example

I then proceeded to print all environment variables which contained the word 
=qt=

#+BEGIN_SRC sh
env | grep -i qt
#+END_SRC

#+RESULTS:
#+begin_example
QMAKEPATH=/home/rodrigo/.guix-home/profile/lib/qt5:/home/rodrigo/.guix-profile/lib/qt5
QT_ACCESSIBILITY=1
QT_IM_MODULE=ibus
QT_PLUGIN_PATH=/home/rodrigo/.guix-home/profile/lib/qt5/plugins:/home/rodrigo/.guix-profile/lib/qt5/plugins
#+end_example

I then set the environment variable =QT_PLUGIN_PATH= to an empty value and I 
tried to execute =flameshot gui=. =flameshot=  run without issues.

#+BEGIN_SRC sh
$ QT_PLUGIN_PATH= flameshot gui ; echo Exit code: $?
flameshot: info: Capture saved as /home/rodrigo/Downloads/2024-10-19_21-06.png
Exit code: 0
#+END_SRC

For those interested in looking into this bug report, here's the output when 
setting =QT_PLUGIN_PATH= to an empty value and enabling debugging. Note that no 
path under =/gnu/store= is reported.

#+BEGIN_SRC sh
QT_PLUGIN_PATH= QT_DEBUG_PLUGINS=1 flameshot gui 2>&1 | tee /tmp/a.txt
#+END_SRC

#+BEGIN_SRC sh
cat /tmp/a.txt
#+END_SRC

#+RESULTS:
#+begin_example
QFactoryLoader::QFactoryLoader() checking directory path 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms" ...
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqeglfs.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqeglfs.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "eglfs"
        ]
    },
    "archreq": 0,
    "className": "QEglFSIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("eglfs")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqlinuxfb.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqlinuxfb.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "linuxfb"
        ]
    },
    "archreq": 0,
    "className": "QLinuxFbIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("linuxfb")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqminimal.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqminimal.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "minimal"
        ]
    },
    "archreq": 0,
    "className": "QMinimalIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("minimal")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqminimalegl.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqminimalegl.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "minimalegl"
        ]
    },
    "archreq": 0,
    "className": "QMinimalEglIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("minimalegl")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqoffscreen.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqoffscreen.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "offscreen"
        ]
    },
    "archreq": 0,
    "className": "QOffscreenIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("offscreen")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqvnc.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqvnc.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "vnc"
        ]
    },
    "archreq": 0,
    "className": "QVncIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("vnc")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqwayland-egl.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqwayland-egl.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "wayland-egl"
        ]
    },
    "archreq": 0,
    "className": "QWaylandEglPlatformIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("wayland-egl")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqwayland-generic.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqwayland-generic.so, 
metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "wayland"
        ]
    },
    "archreq": 0,
    "className": "QWaylandIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("wayland")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqwayland-xcomposite-egl.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqwayland-xcomposite-egl.so, 
metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "wayland-xcomposite-egl"
        ]
    },
    "archreq": 0,
    "className": "QWaylandXCompositeEglPlatformIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("wayland-xcomposite-egl")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqwayland-xcomposite-glx.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqwayland-xcomposite-glx.so, 
metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "wayland-xcomposite-glx"
        ]
    },
    "archreq": 0,
    "className": "QWaylandXCompositeGlxPlatformIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("wayland-xcomposite-glx")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "xcb"
        ]
    },
    "archreq": 0,
    "className": "QXcbIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("xcb")
QFactoryLoader::QFactoryLoader() checking directory path "/usr/bin/platforms" 
...
loaded library "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so"
loaded library "Xcursor"
QFactoryLoader::QFactoryLoader() checking directory path 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platformthemes" ...
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platformthemes/libqgtk3.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platformthemes/libqgtk3.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformThemeFactoryInterface.5.1",
    "MetaData": {
        "Keys": [
            "gtk3"
        ]
    },
    "archreq": 0,
    "className": "QGtk3ThemePlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("gtk3")
QFactoryLoader::QFactoryLoader() checking directory path 
"/usr/bin/platformthemes" ...
QFactoryLoader::QFactoryLoader() checking directory path 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforminputcontexts" ...
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforminputcontexts/libcomposeplatforminputcontextplugin.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforminputcontexts/libcomposeplatforminputcontextplugin.so,
 metadata=
{
    "IID": "org.qt-project.Qt.QPlatformInputContextFactoryInterface.5.1",
    "MetaData": {
        "Keys": [
            "compose",
            "xim"
        ]
    },
    "archreq": 0,
    "className": "QComposePlatformInputContextPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("compose", "xim")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforminputcontexts/libibusplatforminputcontextplugin.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/platforminputcontexts/libibusplatforminputcontextplugin.so,
 metadata=
{
    "IID": "org.qt-project.Qt.QPlatformInputContextFactoryInterface.5.1",
    "MetaData": {
        "Keys": [
            "ibus"
        ]
    },
    "archreq": 0,
    "className": "QIbusPlatformInputContextPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("ibus")
QFactoryLoader::QFactoryLoader() checking directory path 
"/usr/bin/platforminputcontexts" ...
loaded library 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforminputcontexts/libibusplatforminputcontextplugin.so"
QFactoryLoader::QFactoryLoader() checking directory path 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/styles" ...
QFactoryLoader::QFactoryLoader() checking directory path "/usr/bin/styles" ...
QFactoryLoader::QFactoryLoader() checking directory path 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/accessiblebridge" ...
QFactoryLoader::QFactoryLoader() checking directory path 
"/usr/bin/accessiblebridge" ...
QFactoryLoader::QFactoryLoader() checking directory path 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/iconengines" ...
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/iconengines/libqsvgicon.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/iconengines/libqsvgicon.so, metadata=
{
    "IID": "org.qt-project.Qt.QIconEngineFactoryInterface",
    "MetaData": {
        "Keys": [
            "svg",
            "svgz",
            "svg.gz"
        ]
    },
    "archreq": 0,
    "className": "QSvgIconPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("svg", "svgz", "svg.gz")
QFactoryLoader::QFactoryLoader() checking directory path "/usr/bin/iconengines" 
...
loaded library 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/iconengines/libqsvgicon.so"
QFactoryLoader::QFactoryLoader() checking directory path 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations" ...
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-egl-integration.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-egl-integration.so,
 metadata=
{
    "IID": "org.qt-project.Qt.QPA.Xcb.QXcbGlIntegrationFactoryInterface.5.5",
    "MetaData": {
        "Keys": [
            "xcb_egl"
        ]
    },
    "archreq": 0,
    "className": "QXcbEglIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("xcb_egl")
QFactoryLoader::QFactoryLoader() looking at 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so"
Found metadata in lib 
/usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so,
 metadata=
{
    "IID": "org.qt-project.Qt.QPA.Xcb.QXcbGlIntegrationFactoryInterface.5.5",
    "MetaData": {
        "Keys": [
            "xcb_glx"
        ]
    },
    "archreq": 0,
    "className": "QXcbGlxIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("xcb_glx")
QFactoryLoader::QFactoryLoader() checking directory path 
"/usr/bin/xcbglintegrations" ...
loaded library 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so"
QFactoryLoader::QFactoryLoader() checking directory path 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/accessible" ...
QFactoryLoader::QFactoryLoader() checking directory path "/usr/bin/accessible" 
...
flameshot: info: Screenshot aborted.
QLibraryPrivate::unload succeeded on 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so"
 
QLibraryPrivate::unload succeeded on 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/iconengines/libqsvgicon.so" 
QLibraryPrivate::unload succeeded on 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforminputcontexts/libibusplatforminputcontextplugin.so"
 
QLibraryPrivate::unload succeeded on 
"/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so" 
QLibraryPrivate::unload succeeded on "Xcursor" (faked)
#+end_example
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