Port vagrant-libvirt to AlmaLinux 9

- Define vagrant plugin macros inline (not available on EL)
- Inline gem install instead of %vagrant_plugin_install macro

vagrant-libvirt.spec

@@ -2,6 +2,14 @@
 
 %global vagrant_spec_commit 259c55e204674f2b006700c6d351d04250d13b04
 
+# Vagrant plugin macros (not provided by vagrant on EL)
+%global vagrant_plugin_dir %{_datadir}/vagrant/gems
+%global vagrant_plugin_instdir %{vagrant_plugin_dir}/gems/%{vagrant_plugin_name}-%{version}
+%global vagrant_plugin_libdir %{vagrant_plugin_instdir}/lib
+%global vagrant_plugin_cache %{vagrant_plugin_dir}/cache/%{vagrant_plugin_name}-%{version}.gem
+%global vagrant_plugin_spec %{vagrant_plugin_dir}/specifications/%{vagrant_plugin_name}-%{version}.gemspec
+%global vagrant_plugin_docdir %{vagrant_plugin_dir}/doc/%{vagrant_plugin_name}-%{version}
+
 Name: %{vagrant_plugin_name}
 Version: 0.11.2
 Release: 8%{?dist}
@@ -88,7 +96,19 @@ Documentation for %{name}.
 
 %build
 gem build ../%{vagrant_plugin_name}-%{version}.gemspec
-%vagrant_plugin_install
+
+mkdir -p .%{vagrant_plugin_dir}
+gem install \
+        -V \
+        --local \
+        --no-user-install \
+        --install-dir .%{vagrant_plugin_dir} \
+        --bindir .%{_bindir} \
+        --ignore-dependencies \
+        --force \
+        --document=ri,rdoc \
+        --backtrace \
+        %{vagrant_plugin_name}-%{version}.gem
 
 %install
 mkdir -p %{buildroot}%{vagrant_plugin_dir}
@@ -153,6 +173,11 @@ popd
 %{vagrant_plugin_instdir}/spec
 
 %changelog
+* Sat Mar 08 2026 Ryosuke Nakayama <ryosuke.nakayama@ryskn.com> - 0.11.2-8.el9
+- Port to AlmaLinux 9
+- Define vagrant plugin macros inline
+- Inline gem install instead of %%vagrant_plugin_install macro
+
 * Mon Nov 03 2025 Vít Ondruch <vondruch@redhat.com> - 0.11.2-8
 - Fix compatibility with REXML 3.4.2+