eval { use Image::Magick };

I'm guessing the purpose of this line is to defer the overhead of loading Image::Magick until you actually need it. I don't think this line of code successfully achieves that though.

One of the differences between 'use' and 'require' is that use happens at compile-time while require happens at run-time. So Image::Magick will be loaded as soon as that line is compiled - regardless of the fact that it's in an eval block. You could change it to:

eval "use Image::Magick";

Which would work because the compiler wouldn't even see it. Or you could simply say:

require Image::Magick

The fact that you're using eval but not checking $@ was a bit of a red flag.