I'd like to update marisa.spec in f28 to switch the python2 build.

E.g.

--- a/marisa.spec
+++ b/marisa.spec
@@ -1,6 +1,12 @@
+%if 0%{?rhel} > 7
+%global with_python2 0
+%else
+%global with_python2 1
+%endif
+
@ -9,10 +15,14 @@ URL:  https://code.google.com/p/marisa-trie
 # https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.c
om/marisa-trie/%%{name}-%%{version}.tar.gz
 Source0: https://marisa-trie.googlecode.com/files/%{name}-%{version}.tar.gz
 
+BuildRequires:  gcc
+BuildRequires:  gcc-c++
 BuildRequires: swig
 BuildRequires: perl-devel
 BuildRequires: perl-generators
+%if %with_python2
 BuildRequires: python2-devel
+%endif
 BuildRequires: python3-devel
 BuildRequires: ruby-devel