https://bugzilla.redhat.com/show_bug.cgi?id=2040728
--- Comment #15 from Phil Cameron pecameron1@gmail.com --- I discussed comment #13 with teh developers.
Xtrkcad is a multi-platform CAD package for designing model railroads that has been in development from before 2003. It is actively developed on Windows, iOS, ubuntu and fedora. The code base reflects needs of all the platforms. When a general release is done packages re created for Windows, iOS, ubuntu and an rpm. The packages are available to download from sourceforge and so far it has been downloaded over 13,700 times.
Early on the developers chose halibut for the documentation but found it lacked a few key features. The halibut development team did not want to add the features for a variety of reasons and halibut was forked and modified. So we will never be able to use the fedora halibut.