custom apps

So Iamm new to nix. I come from fedora and do vfx, which means I need houdini nuke and many other things. They needopticx and cuda working and those apps are not installed via the nix repository, because they are proprietary. How would I go about setting up a houdini install that is at least somewhat reproducible. These apps require some older libraries like libpng. If anyone could point me in the right direction that would be great.