An option to disable auto remerging by make.conf changes

README.markdown

@@ -77,7 +77,7 @@ In order to add entries to `make.conf`:
       ensure  => present,
     }
 
-Changes in the USE variable will also trigger re-emerge of the affected packages.
+Changes in make.conf will also trigger re-emerge of the affected packages. You can disable this behaviour by setting `make_conf_remerge` to `false`.
 
 You can also specify special content:
 

manifests/init.pp

@@ -24,6 +24,7 @@
 
 class portage (
   $make_conf              = $portage::params::make_conf,
+  $make_conf_remerge      = $portage::params::make_conf_remerge,
   $portage_ensure         = $portage::params::portage_ensure,
   $portage_keywords       = $portage::params::portage_keywords,
   $portage_use            = $portage::params::portage_use,
@@ -57,7 +58,7 @@ class portage (
     ensure => directory;
   }
 
-  exec { 'changed_makeconf_use':
+  exec { 'changed_makeconf':
     command     => 'emerge -1 --changed-use $(qlist -vIC | sed \'s/^/=/\')',
     refreshonly => true,
     timeout     => 43200,
@@ -70,7 +71,10 @@ class portage (
     owner  => 'root',
     group  => 'root',
     mode   => '0644',
-    notify => Exec['changed_makeconf_use'],
+  }
+
+  if ($make_conf_remerge) {
+    Concat[$make_conf] ~> Exec['changed_makeconf']
   }
 
   concat::fragment { 'makeconf_header':

manifests/params.pp

@@ -8,6 +8,7 @@
 #
 class portage::params {
   $make_conf              = '/etc/portage/make.conf'
+  $make_conf_remerge      = true
   $portage_ensure         = installed
   $portage_keywords       = undef
   $portage_use            = undef