First of all, I have to say I'm glad this list is not completely dead :)
Which package is that? If you name it, maybe we can help you in working around the problem. I think the distinction between the old and new versions of the network and time modules is to support different GHC versions. GHC 6.10.4 includes network 2.2.1.2 and time 1.1.4 by default, so I would not care about that dependency in the port.
I'm working on a port of Haskell-Platform. I has the following dependencies: GLUT ==2.1.1.2, HTTP ==4000.0.6, OpenGL ==2.2.1.1, cgi ==3001.1.7.1, editline ==0.2.1.0, << I'm struggling with that a bit fgl ==5.4.2.2, network ==2.2.1.4, << I'm going to submit that (version 2.2.1.7) time ==1.1.2.4, << I'm going to submit that (version 1.1.4) zlib ==0.5.0.0 It also has dependencies to Cabal 1.6.x which I've submitted last week together with cabal-install. I'm porting the three remaining modules. All others are already available in the ports. Although some of them are newer versions. The Haskell guys have adopted a versioning policy a while ago (http://www.haskell.org/haskellwiki/Package_versioning_policy) however, not all ports follow it (e.g. HTTP). I'm a bit worried that they won't all work together - especially if the major version doesn't match. P.S. I'm gonna be off for the next three weeks, so don't be surprised if I don't respond during that time.