Fix the py_byte_compile macro to work on Python 2

See https://bugzilla.redhat.com/show_bug.cgi?id=1484993

Inspired by Terje Røsten's workaround from that bugzilla

macros.pybytecompile3.6

@@ -3,8 +3,23 @@
 # Python's compile_all module only works on directories, and requires a max
 # recursion depth
 
+# Note that the py_byte_compile macro should work for python2 as well
+# Which unfortunately makes the definition more complicated than it should be
+# The condition should be reversed once /usr/bin/python is python3!
+
 %py_byte_compile()\
-python_binary="%1"\
-bytecode_compilation_path="%2"\
-find $bytecode_compilation_path -type f -a -name "*.py" -print0 | xargs -0 $python_binary -O -c 'import py_compile, sys; [py_compile.compile(f, dfile=f.partition("$RPM_BUILD_ROOT")[2], optimize=opt) for opt in range(2) for f in sys.argv[1:]]' || :\
+py2_byte_compile () {\
+    python_binary="%1"\
+    bytecode_compilation_path="%2"\
+    find $bytecode_compilation_path -type f -a -name "*.py" -print0 | xargs -0 $python_binary -c 'import py_compile, sys; [py_compile.compile(f, dfile=f.partition("$RPM_BUILD_ROOT")[2]) for f in sys.argv[1:]]' || :\
+    find $bytecode_compilation_path -type f -a -name "*.py" -print0 | xargs -0 $python_binary -O -c 'import py_compile, sys; [py_compile.compile(f, dfile=f.partition("$RPM_BUILD_ROOT")[2]) for f in sys.argv[1:]]' || :\
+}\
+\
+py3_byte_compile () {\
+    python_binary="%1"\
+    bytecode_compilation_path="%2"\
+    find $bytecode_compilation_path -type f -a -name "*.py" -print0 | xargs -0 $python_binary -O -c 'import py_compile, sys; [py_compile.compile(f, dfile=f.partition("$RPM_BUILD_ROOT")[2], optimize=opt) for opt in range(2) for f in sys.argv[1:]]' || :\
+}\
+\
+[[ "%1" == *python3* ]] || py2_byte_compile "%1" "%2" && py3_byte_compile "%1" "%2" \
 %{nil}

python3.spec

@@ -14,7 +14,7 @@ URL: https://www.python.org/
 #  WARNING  When rebasing to a new Python version,
 #           remember to update the python3-docs package as well
 Version: %{pybasever}.4
-Release: 17%{?dist}
+Release: 18%{?dist}
 License: Python
 
 
@@ -1513,6 +1513,11 @@ CheckPython optimized
 # ======================================================
 
 %changelog
+* Thu Mar 15 2018 Miro Hrončok <mhroncok@redhat.com> - 3.6.4-18
+- Fix the py_byte_compile macro to work on Python 2
+- Remove the pybytecompile macro file from the flat package
+Resolves: rhbz#1484993
+
 * Tue Mar 13 2018 Charalampos Stratakis <cstratak@redhat.com> - 3.6.4-17
 - Do not send IP addresses in SNI TLS extension