Even when all are printed they look pretty concise to me. Still, it might be best to just have the following single notice in `caveats` instead:
```
Notes on installing any built mapscript modules are listed in: 
  #{opt_prefix}/Install_Modules.txt
```
Then, dump the install instructions for all built modules in that file. This would be considerably less temporal than just a listing in the `caveats`, and could possibly be set up as a shell script, run manually by the user under `sudo`.