Convert to libalternatives, bsc#1245883

python-python-dotenv.spec

@@ -16,6 +16,12 @@
 #
 
 
+# rubygem-dotenv also provides executable dotenv
+%if 0%{?suse_version} > 1500
+%bcond_without libalternatives
+%else
+%bcond_with libalternatives
+%endif
 %{?sle15_python_module_pythons}
 Name:           python-python-dotenv
 Version:        1.1.0
@@ -34,10 +40,14 @@ BuildRequires:  %{python_module sh >= 2.0}
 BuildRequires:  %{python_module wheel}
 BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
-Requires:       python-click >= 5.0
-# rubygem-dotenv also provides executable dotenv
+%if %{with libalternatives}
+BuildRequires:  alts
+Requires:       alts
+%else
 Requires(post): update-alternatives
 Requires(postun): update-alternatives
+%endif
+Requires:       python-click >= 5.0
 Suggests:       python-jupyter_ipython
 # There is a very similar Python package which also used `dotenv` namespace
 Conflicts:      python-dotenv
@@ -72,6 +82,9 @@ $python -m pytest -v -k "not ipython"
 }
 mv %{buildroot}%{_bindir}/dotenv.orig %{buildroot}%{_bindir}/dotenv
 
+%pre
+%python_libalternatives_reset_alternative dotenv
+
 %post
 %python_install_alternative dotenv