/usr/lib/mime/packages/inkscape is in inkscape 0.48.5-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | image/svg+xml; inkscape '%s'; description="Scalable Vector Graphics"; test=test -n "$DISPLAY"; print=inkscape --print='|lp' '%s'; edit=inkscape '%s'; compose=inkscape '%s'; priority=7
image/svg; inkscape '%s'; description="Scalable Vector Graphics"; test=test -n "$DISPLAY"; print=inkscape --print='|lp' '%s'; edit=inkscape '%s'; compose=inkscape '%s'; priority=7
image/svg+xml; false; description="Scalable Vector Graphics"; test=test -z "$DISPLAY"; print=inkscape --print='|lp' '%s'; priority=7
image/svg; false; description="Scalable Vector Graphics"; test=test -z "$DISPLAY"; print=inkscape --print='|lp' '%s'; priority=7
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