Does hjs depend on regex-base ?

[Marc Weber]

hjs -> regex-compat -> regex-base

ghc-6.6.1: unknown package: regex-base-0.91 (dependency of regex-compat-0.90)
Preprocessing executables for hjs-0.2...

Obviously you can't compile regex-compat without regex-base.
Thus you can/should assume that you have also regex-base installed if you find
regex-compat, right? Is this intentionally?

Mmmh This means I must iterate over the whole dependency tree to collect
them all.

Marc Weber