Autodetect supported instead of using Hiera

data/RedHat.CentOS.6.yaml

@@ -1,4 +1,3 @@
 ---
 
 openvmtools::manage_epel: true
-openvmtools::supported: true

data/RedHat.OracleLinux.6.yaml

@@ -1,4 +1,3 @@
 ---
 
 openvmtools::manage_epel: true
-openvmtools::supported: true

data/RedHat.RedHat.6.yaml

@@ -1,4 +1,3 @@
 ---
 
 openvmtools::manage_epel: true
-openvmtools::supported: true

functions/supported.pp

@@ -0,0 +1,18 @@
+# @summary Returns whether the currently loaded OS is supported by the module
+#
+# This function uses the current facts to check if the current Operating System
+# and its release or major release is supported.
+#
+# @param mod
+#  The module name to check.
+#
+# @return Whether the current OS is supported for the given module
+#
+# @example Using the Puppet built in global $module_name
+#   openvmtools::supported($module_name)
+function openvmtools::supported(String[1] $mod) >> Boolean {
+  $metadata = load_module_metadata($mod)
+  $metadata['operatingsystem_support'].any |$os| {
+    $os['operatingsystem'] == $facts['os']['name'] and $facts['os']['release']['major'] in $os['operatingsystemrelease']
+  }
+}

manifests/init.pp

@@ -96,12 +96,12 @@
   Boolean                             $service_hasstatus         = true,
   Variant[String[1],Array[String[1]]] $service_name              = ['vgauthd', 'vmtoolsd'],
   Optional[String[1]]                 $service_pattern           = undef,
-  Boolean                             $supported                 = false,
+  Optional[Boolean]                   $supported                 = undef,
   Boolean                             $uninstall_vmware_tools    = false,
   Boolean                             $with_desktop              = false,
 ) {
   if $facts['virtual'] == 'vmware' {
-    if $supported {
+    if pick($supported, openvmtools::supported($module_name)) {
       if $ensure == 'present' {
         $package_ensure = $autoupgrade ? {
           true    => 'latest',

spec/functions/supported_spec.rb

@@ -0,0 +1,20 @@
+require 'spec_helper'
+
+describe 'openvmtools::supported' do
+  context 'On Debian 10' do
+    let(:facts) do
+      {
+        os: {
+          name: 'Debian',
+          release: {
+            major: '10',
+          }
+        }
+      }
+    end
+
+    it 'returns true' do
+      is_expected.to run.with_params('openvmtools').and_return(true)
+    end
+  end
+end