thats something you will have to take up with Johannes.
Im a contributor (not the product owner, nor derive anything from axo sales) , and was trying to explain the reason/issues behind this - not to debate it.
if your an 'end user' , why not use/install Ubtunu? its one of the biggest and best supported distros, and whilst, I agree the axoloti website says linux is supported - ever since release/July 2015, the 'installing on linux' user guide entry, has said we recommend Ubuntu... ( i know, I wrote it).
if you wanted to use something else, it would have been prudent to ask first.
how to proceed... well my recommendation is simple.
either switch to Ubuntu or go look at how to build , we provide instructions, and many other users have done it... often its not much more than calling build.sh
err, if your using a standard linux distro, like opensuse, it already has compilers and such like installed, the only extra compiler your going to be installing is the the cross compiler for ARM, which you need to have to use Axoloti (rather than to 'build' it)