These are the installation instructions for App::ShaderToy from the Github repository:
git clone https://github.com/Corion/app-shadertoy.git
cd app-shadertoy
cpanm --installdeps .
perl Makefile.PL
make
git clone https://github.com/Corion/app-shadertoy.git
cd app-shadertoy
cpanm --installdeps .
perl Makefile.PL
dmake