/usr/lib/x86_64-linux-gnu/plplot5.10.0/driversd/qt.driver_info is in plplot12-driver-qt 5.10.0+dfsg2-0.4+b2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 | bmpqt:Qt Windows bitmap driver:0:qt:66:bmpqt
jpgqt:Qt jpg driver:0:qt:67:jpgqt
pngqt:Qt png driver:0:qt:68:pngqt
ppmqt:Qt ppm driver:0:qt:69:ppmqt
tiffqt:Qt tiff driver:0:qt:70:tiffqt
svgqt:Qt SVG driver:0:qt:71:svgqt
qtwidget:Qt Widget:1:qt:72:qtwidget
epsqt:Qt EPS driver:0:qt:73:epsqt
pdfqt:Qt PDF driver:0:qt:74:pdfqt
extqt:External Qt driver:0:qt:75:extqt
memqt:Memory Qt driver:0:qt:76:memqt
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