[netinstall] Add immutable to groups settings

src/modules/netinstall/PackageTreeItem.cpp

@@ -52,6 +52,7 @@ PackageTreeItem::PackageTreeItem( const QVariantMap& groupData, PackageTreeItem*
     , m_postScript( CalamaresUtils::getString( groupData, "post-install" ) )
     , m_isCritical( CalamaresUtils::getBool( groupData, "critical", false ) )
     , m_isHidden( CalamaresUtils::getBool( groupData, "hidden", false ) )
+    , m_showReadOnly( CalamaresUtils::getBool( groupData, "immutable", false ) )
     , m_startExpanded( CalamaresUtils::getBool( groupData, "expanded", false ) )
 {
 }

src/modules/netinstall/PackageTreeItem.h

@@ -117,6 +117,7 @@ private:
     QString m_postScript;
     bool m_isCritical = false;
     bool m_isHidden = false;
+    bool m_showReadOnly = false;
     bool m_startExpanded = false;
 };
 

src/modules/netinstall/README.md

@@ -48,8 +48,12 @@ More keys (per group) are supported:
  - *critical*: if true, make the installation process fail if installing
    any of the packages in the group fails. Otherwise, just log a warning.
    Defaults to false.
+ - *immutable*: if true, the state of the group (and all its subgroups)
+   cannot be changed; it really only makes sense in combination
+   with *selected* set to true. This only affects the user-interface.
  - *expanded*: if true, the group is shown in an expanded form (that is,
-   not-collapsed) in the treeview on start.
+   not-collapsed) in the treeview on start. This only affects the user-
+   interface.
  - *subgroups*: if present this follows the same structure as the top level
    of the YAML file, allowing there to be sub-groups of packages to an
    arbitary depth