how many tcl/tk's in 1.8.0?

[Jack Howarth]

   I ported the sparky 3.115 NMR assignment program
using the same build approach from fink (where I
maintained the package). I am unclear on whether I
need to code the Portfile to support more than just
builds against tcl/tk 8.5 (which is what MacPorts
1.8.0 installed on my Snow Leopard box). Looking
at the MacPorts database, it appears that only a
single tcl/tk is available (8.5). Is that correct?
If so I'll move the tcl/tk version changes into
the build patch.
                  Jack