> Looks like the author of hxt has decided to support 6.12 only, at the
> moment.
>
> base (>=4.2 && <5)
>
> Ensures this will only work on the 6.12 series of compilers.

Thanks. I know.

My point is, i don't understand why hxt-8.3.2 (base >= 4 && <5) fails to install for me with:

"
src/Text/XML/HXT/Parser/TagSoup.hs:292:8:
Not in scope: `optLookupEntity'
cabal: Error: some packages failed to install:
hxt-8.3.2 failed during the building phase. The exception was:
exit: ExitFailure 1
"