infectedsoundsystem/pyffi — comment on commit 378b34a146a74d88febf6f35225f2db71f696950
File: pyffi/spells/nif/optimize.py line 640
By amorilia:

No problem at all - this is one of those weird python things which easily bites you if you're not careful. I'll try to fix the code to ensure that Python recognizes that the blocks are not hashable, whence can't be used as elements of sets.