I use my 10.7 system for this stuff, python 2.7 is compiled with a modified brew formula to target 10.6. However pillow/ttk support is problematic, I could never solve png support in the launcher: The logo shows up on 10.7 and I assume on 10.6 as well, but never past 10.8+: neither pip installed pillow, nor brew installed pillow works. Same problem Pidgeot's release. Minor problem for now, (until preview is implemented) but I'm willing to give lethosor a chance.
And Xposting this for posterity:
//Peridexiserrant: The legends processor script has a trouble with recognizing filenames, when the save game folder is not the default. Eg: region2 works ok, but region2-mod won't play nicely. I assume this means there's a similar problem with seasonal saves as well.
+Feature idea: Currently the graphics/customize tab shows both GRAPHIC_FONT and FONT all the time. This is good when twbt rendering is used, buth when the rendering mode is set to standard/2D it would be better if only one entry window was shown for selecting tilesets.
+Minor bug report, mainly for PerX: The 'installed_raws' text genererates the installed tileset/pack configuration from the directory name, and not from the manifest name, and only accepts directories with the exact same filename. This will cause silent save update failures, like when you update Gemset_1.3 to Gemset_1.4. Some flexibility'd be good in the future. For now my advice is to stick to the directory name, and not to use version numbers in folders when we restart the release cycle for df4?.01.