Add check if exec_dir exists before listing it's content

check-exec_dir.patch

@@ -0,0 +1,16 @@
+diff --git a/virtualenv.py b/virtualenv.py
+index c4e3bd5..89b8863 100755
+--- a/virtualenv.py
++++ b/virtualenv.py
+@@ -1181,8 +1181,9 @@ def install_python(home_dir, lib_dir, inc_dir, bin_dir, site_packages, clear, sy
+             exec_dir = join(sys.exec_prefix, 'Lib')
+         else:
+             exec_dir = join(sys.exec_prefix, 'lib', py_version)
+-        for fn in os.listdir(exec_dir):
+-            copyfile(join(exec_dir, fn), join(lib_dir, fn), symlink)
++        if os.path.isdir(exec_dir):
++            for fn in os.listdir(exec_dir):
++                copyfile(join(exec_dir, fn), join(lib_dir, fn), symlink)
+
+     if is_jython:
+         # Jython has either jython-dev.jar and javalib/ dir, or just

python-virtualenv.spec

@@ -8,7 +8,7 @@
 
 Name:           python-virtualenv
 Version:        15.0.3
-Release:        5%{?dist}
+Release:        6%{?dist}
 Summary:        Tool to create isolated Python environments
 
 Group:          Development/Languages
@@ -16,6 +16,11 @@ License:        MIT
 URL:            http://pypi.python.org/pypi/virtualenv
 Source0:        http://pypi.python.org/packages/source/v/virtualenv/virtualenv-%{version}.tar.gz
 
+# virtualenv -p "/usr/bin/python3" venv fails if there are not packages installed
+# under /usr/local/lib/pythonX.Y/site-packages. Check if exec_dir exists before
+# listing it's content.
+Patch0: check-exec_dir.patch
+
 BuildArch:      noarch
 BuildRequires:  python2-devel
 
@@ -81,6 +86,8 @@ licensed under an MIT-style permissive license
 %setup -q -n virtualenv-%{version}
 %{__sed} -i -e "1s|#!/usr/bin/env python||" virtualenv.py 
 
+%patch0 -p1
+
 %build
 # Build code
 %{py2_build}
@@ -147,6 +154,9 @@ cp %{buildroot}/%{_bindir}/virtualenv %{buildroot}/%{_bindir}/virtualenv-2
 
 
 %changelog
+* Fri Feb 17 2017 Michal Cyprian <mcyprian@redhat.com> - 15.0.3-6
+- Check if exec_dir exists before listing it's content during venv create process
+
 * Sat Feb 11 2017 Fedora Release Engineering <releng@fedoraproject.org> - 15.0.3-5
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild