Emacs: pulled the source code from CVS. Built a Carbon version. Works fine.

ESP Ghostscript: downloaded source code (and libjpeg) compiled and installed. It does not include the gs fonts though. Got the PPC version of 7.07 and extracted the font package and installed.

Hugs: works out of box. Not surprising.

GHC: downloaded Wolfgang Thaller’s package and it runs over Rosetta fine, although slow.