But! Think of the advantages which you gain. Software is installed with double-click. No need to support long documentation manuals on configuration since a lot of stuff will be done automatically.

We decided to use IzPack installer for one of our products. Although there are plenty of other different installers, we chose this one since it is pretty simple, robust and free! I would like to start a small series of posts about IzPack covering integration with Maven, plugin development, debugging with Eclipse, making modularized installers (which can be included in each other) and so on.

The thing is that in the memory leak example I took length of read file and appended it to accumulator, which was sent further in the tail call. And this accumulator was evaluated lazily! After adding strict sequencing operator, the memory leak gone.

So instead of tail call:

test fns $ acc + (B.length contents)

I should have used:

test fns $! acc + (B.length contents)