Switch macros to bcond's and make Python 2 optional

To facilitate building the Python 2 and Python 3 modules.

python-wheel.spec

@@ -1,10 +1,15 @@
+# Note that the only function of bootstrap is that it disables the test suite:
+#   bcond_with bootstrap = tests enabled
 %bcond_with bootstrap
 
+%bcond_without python2
+%bcond_without python3
+
 %global pypi_name wheel
 
 Name:           python-%{pypi_name}
 Version:        0.30.0a0
-Release:        7%{?dist}
+Release:        8%{?dist}
 Summary:        A built-package format for Python
 
 License:        MIT
@@ -30,6 +35,7 @@ compatible install in a way that is very close to the on-disk format.
 
 %description %{_description}
 
+%if %{with python2}
 %package -n     python2-%{pypi_name}
 Summary:        %{summary}
 BuildRequires:  python2-devel
@@ -45,7 +51,10 @@ BuildRequires:  python-jsonschema
 %description -n python2-%{pypi_name} %{_description}
 
 Python 2 version.
+%endif
 
+
+%if %{with python3}
 %package -n     python3-%{pypi_name}
 Summary:        %{summary}
 BuildRequires:  python3-devel
@@ -61,6 +70,8 @@ BuildRequires:  python3-jsonschema
 %description -n python3-%{pypi_name} %{_description}
 
 Python 3 version.
+%endif
+
 
 %prep
 %setup -q -n %{pypi_name}-%{version}
@@ -68,27 +79,42 @@ Python 3 version.
 sed -ie '1d' %{pypi_name}/{egg2wheel,wininst2wheel}.py
 %patch0 -p1
 
+
 %build
+%if %{with python2}
 %py2_build
+%endif
+%if %{with python3}
 %py3_build
+%endif
+
 
 %install
-%py2_install
+%if %{with python3}
-mv %{buildroot}%{_bindir}/%{pypi_name}{,-%{python2_version}}
-ln -s %{pypi_name}-%{python2_version} %{buildroot}%{_bindir}/%{pypi_name}-2
 %py3_install
 mv %{buildroot}%{_bindir}/%{pypi_name}{,-%{python3_version}}
 ln -s %{pypi_name}-%{python3_version} %{buildroot}%{_bindir}/%{pypi_name}-3
+%endif
 
+%if %{with python2}
+%py2_install
+mv %{buildroot}%{_bindir}/%{pypi_name}{,-%{python2_version}}
+ln -s %{pypi_name}-%{python2_version} %{buildroot}%{_bindir}/%{pypi_name}-2
 ln -s %{pypi_name}-2 %{buildroot}%{_bindir}/%{pypi_name}
+%endif
 
 %if ! %{with bootstrap}
 %check
 rm setup.cfg
+%if %{with python2}
 PYTHONPATH=%{buildroot}%{python2_sitelib} py.test-2 -v --ignore build
+%endif
+%if %{with python3}
 PYTHONPATH=%{buildroot}%{python3_sitelib} py.test-3 -v --ignore build
 %endif
+%endif
 
+%if %{with python2}
 %files -n python2-%{pypi_name}
 %license LICENSE.txt
 %doc CHANGES.txt README.txt
@@ -97,7 +123,9 @@ PYTHONPATH=%{buildroot}%{python3_sitelib} py.test-3 -v --ignore build
 %{_bindir}/%{pypi_name}-%{python2_version}
 %{python2_sitelib}/%{pypi_name}*
 %exclude %{python2_sitelib}/%{pypi_name}/test
+%endif
 
+%if %{with python3}
 %files -n python3-%{pypi_name}
 %license LICENSE.txt
 %doc CHANGES.txt README.txt
@@ -105,8 +133,13 @@ PYTHONPATH=%{buildroot}%{python3_sitelib} py.test-3 -v --ignore build
 %{_bindir}/%{pypi_name}-%{python3_version}
 %{python3_sitelib}/%{pypi_name}*
 %exclude %{python3_sitelib}/%{pypi_name}/test
+%endif
 
 %changelog
+* Tue Aug 29 2017 Tomas Orsava <torsava@redhat.com> - 0.30.0a0-8
+- Switch macros to bcond's and make Python 2 optional to facilitate building
+  the Python 2 and Python 3 modules
+
 * Thu Jul 27 2017 Fedora Release Engineering <releng@fedoraproject.org> - 0.30.0a0-7
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Mass_Rebuild