Fix BR

OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-retrying?expand=0&rev=10

python-retrying.spec

@@ -25,6 +25,7 @@ License:        Apache-2.0
 Group:          Development/Languages/Python
 URL:            https://github.com/rholder/retrying
 Source:         https://files.pythonhosted.org/packages/source/r/retrying/retrying-%{version}.tar.gz
+BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
 Requires:       python-six >= 1.7.0
 BuildArch:      noarch
@@ -42,6 +43,7 @@ simplify the task of adding retry behavior to just about anything.
 
 %install
 %python_install
+%python_expand %fdupes %{buildroot}%{$python_sitelib}
 
 %files %{python_files}
 %license LICENSE