Created attachment 587414 [details] build.log Build failed: Traceback (most recent call last): 2: from /usr/local/bin/rake:23:in `<main>' 1: from /usr/lib64/ruby/site_ruby/2.5.0/rubygems.rb:308:in `activate_bin_path' /usr/lib64/ruby/site_ruby/2.5.0/rubygems.rb:289:in `find_spec_for_exe': can't find gem rake (>= 0.a) with executable rake (Gem::GemNotFoundException)
Created attachment 587416 [details] emerge --info emerge --info
Problem was a installed rake version in /usr/local/bin. After removing this version the installation works.