Make spec file python2 compatible

centpkg.spec

@@ -1,3 +1,13 @@
+# In order to use unversioned python macros in the spec file, we need to
+# explicitly define %%__python.  It is already defined on el7.
+%if %{undefined el7}
+%if %{defined el8}
+%global __python %{_libexecdir}/platform-python
+%else
+%global __python %{python3}
+%endif
+%endif
+
 Name:           centpkg
 Version:        %{!?devrel:0.4.6}%{?devrel:0.4.7}
 Release:        %{?devrel:0.%{devrel}%{?devsnap:.%{devsnap}}.}1%{?dist}
@@ -7,11 +17,12 @@ URL:            https://git.centos.org/centos/centpkg
 Source0:        https://git.centos.org/centos/centpkg/archive/%{version}/centpkg-%{version}.tar.gz
 BuildArch:      noarch
 
-BuildRequires:  python3-devel
-%if 0%{?rhel} > 0 && 0%{?rhel} < 8
+%if %{defined el7}
+BuildRequires:  python-devel
 BuildRequires:  python-setuptools
 %else
-BuildRequires:  %{py3_dist setuptools}
+BuildRequires:  python3-devel
+BuildRequires:  python3-setuptools
 %endif
 
 %description
@@ -31,11 +42,11 @@ Provides the centpkg-sig command for working with dist-git.
 
 
 %build
-%py3_build
+%py_build
 
 
 %install
-%py3_install
+%py_install
 
 
 %files
@@ -43,7 +54,8 @@ Provides the centpkg-sig command for working with dist-git.
 %doc README.md
 %config(noreplace) %{_sysconfdir}/rpkg/centpkg.conf
 %{_bindir}/%{name}
-%{python3_sitelib}/%{name}*
+%{python_sitelib}/%{name}
+%{python_sitelib}/%{name}-%{version}-py%{python_version}.egg-info
 
 
 %files sig