+
+{- % du -sh 01.wv
+ 15716
+
+ When compiled with -O0:
+ % time ./dist/build/hs-wvinfo/hs-wvinfo 01.wv > /dev/null
+ 1.49s user 2.12s system 98% cpu 3.664 total
+
+ When compiled with -O2:
+ % time ./dist/build/hs-wvinfo/hs-wvinfo 01.wv > /dev/null
+ 1.35s user 2.09s system 97% cpu 3.520 total
+
+ Hmm... quite disappointing... The stringification is the
+ bottleneck? If so, I can live with that.
+-}