version 1.80 of app-sci/units does not define au as astronomicalunit. This appears to be because of major refactoring of the units.dat file between it and the previous version; it looks like said definition was removed. This is a major problem because a number of other units are defined in terms of au's rather than astronomicalunits, so if you want to know how many attoparsecs per microfortnight there are in a mile per hour, you can't because parsec is defined in terms of au. :-) This is easily fixed by patching in such a line in units.dat. (it is such a trivial upstream issue, but units appears to lack an upstream maintainer...) Reproducible: Always Steps to Reproduce:
Fixed, thanks. Indeed it looks like this is orphaned.