Use forward-compat python-crypto2.6 package for epel/rhel.

python-oauthlib.spec

@@ -13,7 +13,7 @@
 
 Name:               python-oauthlib
 Version:            0.6.0
-Release:            3%{?dist}
+Release:            4%{?dist}
 Summary:            An implementation of the OAuth request-signing logic
 
 Group:              Development/Libraries
@@ -27,12 +27,16 @@ BuildRequires:      python2-devel
 BuildRequires:      python-setuptools
 
 BuildRequires:      python-nose
-BuildRequires:      python-crypto >= 2.6
 BuildRequires:      python-unittest2
 BuildRequires:      python-mock
 
+%if 0%{?rhel} && 0%{?rhel} <= 6
+BuildRequires:      python-crypto2.6
+Requires:           python-crypto2.6
+%else
+BuildRequires:      python-crypto >= 2.6
 Requires:           python-crypto >= 2.6
-
+%endif
 
 %if 0%{?with_python3}
 BuildRequires:      python3-devel
@@ -72,6 +76,12 @@ very little effort.
 
 # Remove bundled egg-info in case it exists
 rm -rf %{modname}.egg-info
+
+# Make sure that setuptools knows to pick up the correct version of
+# python-crypto on epel/rhel...
+awk 'NR==1{print "import __main__; __main__.__requires__ = __requires__ = [\"pycrypto>=2.6\"]; import pkg_resources"}1' setup.py > setup.py.tmp
+mv setup.py.tmp setup.py
+
 %if 0%{?with_python3}
 rm -rf %{py3dir}
 cp -a . %{py3dir}
@@ -114,6 +124,9 @@ popd
 %endif
 
 %changelog
+* Fri Apr 11 2014 Ralph Bean <rbean@redhat.com> - 0.6.0-4
+- Use forward-compat python-crypto2.6 package for el6.
+
 * Tue Jan 21 2014 Ralph Bean <rbean@redhat.com> - 0.6.0-3
 - Compat macros for el6.