> This does not seem right, as Nitrokey App uses Qt5. Perhaps some invalid > package dependency in the Debian metafile?
libgtk2.0-dev is in the Build-Depends: Build-Depends: bash-completion, cmake (>= 3.1.0), debhelper (>= 12~), *libgtk2.0-dev*, libnotify-dev, libusb-1.0-0-dev, udev, qt5-qmake, qtbase5- dev, qttools5-dev, libqt5svg5-dev, qtchooser, libhidapi-dev, libnitrokey-dev (>= 3.5)
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