python-Cheroot: restore patch to fix depends for python3 flavor

srcpkgs/python-Cheroot/patches/fix-setup.py.patch

@@ -0,0 +1,21 @@
+--- setup.py.orig
++++ setup.py
+@@ -43,7 +43,7 @@
+     ),
+     python_requires='>=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*',
+     install_requires=[
+-        'backports.functools_lru_cache',
++        'backports.functools_lru_cache;python_version<"3.4"',
+         'six>=1.11.0',
+         'more_itertools>=2.6',
+     ],
+@@ -78,7 +78,7 @@
+             'codecov',
+ 
+             'pytest-cov',
+-            'backports.unittest_mock',
++            'backports.unittest_mock;python_version<"3.4"',
+
+            # TLS
+            'trustme>=0.4.0',
+

srcpkgs/python-Cheroot/template

@@ -1,7 +1,7 @@
 # Template file for 'python-Cheroot'
 pkgname=python-Cheroot
 version=6.5.2
-revision=1
+revision=2
 noarch=yes
 wrksrc="cheroot-${version}"
 build_style=python-module