...but now Inkscape won't work - it must have been the culprit in the glib update...
inkscape 0.46 should require glib2 = 2.16 because older glib2 versions do not
provide the symbol g_dpgettext which is required by inkscape.
If glib2 is below 2.16, inkscape will crash on startup with
"inkscape: symbol lookup error: inkscape: undefined symbol: g_dpgettext"
Downgrading Inkscape to 0.45 should bring it back to life, minus the new features in 0.46.