In the CompileOnUnix guide on the Wiki, in the section about getting the dependencies on Fedora, pivy is named as pivy, while in the Fedora repo it is python2-pivy and python3-pivy.
Also, packages are provided differently in the getting dependencies section and the build script. For example, again in the Fedora section, in the Getting the dependencies, there are pivy and and eigen3-devel, while in the build script, they are written as python-pivy and eigen3 (not eigen3-devel).
Also, there are packages listed in the Build Script that are missing in the Dependencies section, such as zlib-devel for example.
This is not a full list though. There may be more package name differences or missing packages from one or the other.