Thanks, you actually had real experience with Mason, which was helpful

>> The downsides are that it's difficult (and I've never gone to the effort of discovering exactly how) to run a debugger on a broken page.

I've noticed one issue which occurs when there is a failure in a dependent module from "use" (not the first level include in, say the .html component, but a secondary module). It gives a very generic "failed to load" name-of-primary-module. You could find this by having a dummy program which loads the same modules, and invoke it from the command-line to find these problems (but it is odd Mason doesn't find them).

I've also noticed a little weirdness with the caching when there is a failure in a unit to compile. Things get unhappy, and well, you just have to restart Apache. The only way to know this is you get this odd feeling that not all is right with the world.