diff --git a/src/modules/initcpio/initcpio.conf b/src/modules/initcpio/initcpio.conf
index b7161e5ae..21f5704cc 100644
--- a/src/modules/initcpio/initcpio.conf
+++ b/src/modules/initcpio/initcpio.conf
@@ -1,2 +1,2 @@
 ---
-kernel: _kernel_
+kernel: linux312
diff --git a/src/modules/netinstall/CMakeLists.txt b/src/modules/netinstall/CMakeLists.txt
index 2038a2658..1de1c7505 100644
--- a/src/modules/netinstall/CMakeLists.txt
+++ b/src/modules/netinstall/CMakeLists.txt
@@ -6,10 +6,10 @@ calamares_add_plugin( netinstall
     SOURCES
         NetInstallViewStep.cpp
         NetInstallPage.cpp
-        widgets/groupselectionwidget.cpp
+        PackageTreeItem.cpp
+        PackageModel.cpp
     UI
         page_netinst.ui
-        widgets/groupselectionwidget.ui
     RESOURCES
         netinstall.qrc
     LINK_PRIVATE_LIBRARIES
diff --git a/src/modules/netinstall/NetInstallPage.cpp b/src/modules/netinstall/NetInstallPage.cpp
index 5c02d0b1b..84c071db9 100644
--- a/src/modules/netinstall/NetInstallPage.cpp
+++ b/src/modules/netinstall/NetInstallPage.cpp
@@ -18,7 +18,8 @@
 
 #include "NetInstallPage.h"
 
-#include "widgets/groupselectionwidget.h"
+#include "PackageModel.h"
+
 #include "ui_page_netinst.h"
 #include "GlobalStorage.h"
 #include "JobQueue.h"
@@ -33,6 +34,7 @@
 #include <QNetworkRequest>
 #include <QNetworkReply>
 
+#include <QHeaderView>
 #include <QtDebug>
 #include <QtGlobal>
 #include <QWidget>
@@ -62,34 +64,9 @@ void NetInstallPage::readGroups( const QByteArray& yamlData )
 {
     YAML::Node groups = YAML::Load( yamlData.constData() );
     Q_ASSERT( groups.IsSequence() );
-
-    for ( YAML::const_iterator it = groups.begin(); it != groups.end(); ++it )
-    {
-        const YAML::Node groupDefinition = *it;
-
-        QString name( tr( yamlToVariant(groupDefinition["name"]).toByteArray() ) );
-        QString description( tr( yamlToVariant(groupDefinition["description"]).toByteArray() ) );
-        QStringList packages;
-
-        for ( YAML::const_iterator it = groupDefinition["packages"].begin();
-                it != groupDefinition["packages"].end(); ++it )
-            packages.append( yamlToVariant(*it).toString() );
-
-        m_groups[name].name = name;
-        m_groups[name].description = description;
-        m_groups[name].packages = packages;
-
-        if ( groupDefinition["selected"] )
-            m_groups[name].selected = yamlToVariant( groupDefinition["selected"] ).toBool();
-
-        if ( groupDefinition["hidden"] )
-            m_groups[name].hidden = yamlToVariant( groupDefinition["hidden"] ).toBool();
-
-        if ( groupDefinition["critical"] )
-            m_groups[name].critical = yamlToVariant( groupDefinition["critical"] ).toBool();
-
-        m_groupOrder.append( name );
-    }
+    QVariantList columnHeadings;
+    columnHeadings << tr( "Name" ) << tr( "Description" );
+    m_groups = new PackageModel( groups, columnHeadings );
 }
 
 void
@@ -104,48 +81,17 @@ NetInstallPage::dataIsHere( QNetworkReply* reply )
 
     readGroups( reply->readAll() );
 
-    QSignalMapper* mapper = new QSignalMapper( this );
-    foreach ( const QString& groupKey, m_groupOrder )
-    {
-        Group group = m_groups[groupKey];
-        if ( group.hidden )
-        {
-            // Do not present on view.
-            continue;
-        }
-
-        GroupSelectionWidget* groupWidget = new GroupSelectionWidget( group.name, group.description, group.packages, group.selected, this );
-        m_groupWidgets.insert( groupKey, groupWidget );
-        ui->groupswidget->layout()->addWidget( groupWidget );
-
-        mapper->setMapping( groupWidget, groupKey );
-        connect( groupWidget, &GroupSelectionWidget::toggled, mapper,
-                 static_cast<void(QSignalMapper::*)()>(&QSignalMapper::map) );
-    }
+    ui->groupswidget->setModel( m_groups );
+    ui->groupswidget->header()->setSectionResizeMode( 0, QHeaderView::ResizeToContents );
+    ui->groupswidget->header()->setSectionResizeMode( 1, QHeaderView::Stretch );
 
     reply->deleteLater();
     emit checkReady( isReady() );
 }
 
-QList<Group> NetInstallPage::selectedGroups() const
+QList<QVariant> NetInstallPage::selectedPackages( bool isCritical ) const
 {
-    QList<Group> selectedGroups;
-
-    // Add all the groups that are toggled in the view.
-    for ( auto it = m_groupWidgets.constBegin(); it != m_groupWidgets.constEnd(); it++ )
-    {
-        if ( it.value()->isToggled() )
-            selectedGroups += m_groups[it.key()];
-    }
-
-    // Add all groups that are hidden but selected.
-    for ( const Group& group : m_groups.values() )
-    {
-        if ( group.hidden && group.selected )
-            selectedGroups += group;
-    }
-
-    return selectedGroups;
+    return m_groups->getPackages( isCritical );
 }
 
 void NetInstallPage::loadGroupList()
@@ -157,14 +103,14 @@ void NetInstallPage::loadGroupList()
     QNetworkRequest request;
     request.setUrl( QUrl( confUrl ) );
     // Follows all redirects except unsafe ones (https to http).
-    request.setAttribute(QNetworkRequest::FollowRedirectsAttribute, true);
+    request.setAttribute( QNetworkRequest::FollowRedirectsAttribute, true );
     // Not everybody likes the default User Agent used by this class (looking at you,
     // sourceforge.net), so let's set a more descriptive one.
     request.setRawHeader( "User-Agent", "Mozilla/5.0 (compatible; Calamares)" );
 
-    connect(&m_networkManager, &QNetworkAccessManager::finished,
-            this, &NetInstallPage::dataIsHere);
-    m_networkManager.get(request);
+    connect( &m_networkManager, &QNetworkAccessManager::finished,
+             this, &NetInstallPage::dataIsHere );
+    m_networkManager.get( request );
 }
 
 void NetInstallPage::onActivate()
diff --git a/src/modules/netinstall/NetInstallPage.h b/src/modules/netinstall/NetInstallPage.h
index 7460c9c11..0f4866770 100644
--- a/src/modules/netinstall/NetInstallPage.h
+++ b/src/modules/netinstall/NetInstallPage.h
@@ -19,6 +19,7 @@
 #ifndef NETINSTALLPAGE_H
 #define NETINSTALLPAGE_H
 
+#include "PackageModel.h"
 #include "Typedefs.h"
 #include <QWidget>
 #include <QAbstractButton>
@@ -28,36 +29,16 @@
 class QByteArray;
 class QNetworkReply;
 class GroupSelectionWidget;
+class PackageModel;
 
 namespace Ui
 {
 class Page_NetInst;
 }
 
-// Representation of a package group.
-struct Group
-{
-    Group()
-        : Group( "","",false, false, false ) { }
-    Group( QString name, QString description, bool selected, bool hidden, bool critical )
-        : name( name ), description( description ), selected( selected ), hidden( hidden ), critical( critical ) { }
-    Group( QString name, QString description )
-        : Group( name, description, false, false, false ) { }
-
-    QString name;
-    QString description;
-    QStringList packages;
-
-    // See README.md for a description of these fields.
-    bool selected = false;
-    bool hidden = false;
-    bool critical = false;
-};
-
 class NetInstallPage : public QWidget
 {
     Q_OBJECT
-
 public:
     NetInstallPage( QWidget* parent = nullptr );
 
@@ -70,9 +51,10 @@ public:
     // in the global storage. This should be called before displaying the page.
     void loadGroupList();
 
-    // Return a list of groups currently selected. No data is cached here, so
-    // this function does not run in constant time.
-    QList<Group> selectedGroups() const;
+    // Returns the list of packages belonging to groups that are
+    // selected in the view in this given moment. No data is cached here, so
+    // this function does not have constant time.
+    QList<QVariant> selectedPackages( bool isCritical ) const;
 
 public slots:
     void dataIsHere( QNetworkReply* );
@@ -91,11 +73,10 @@ private:
     // Handles connection with the remote URL storing the configuration.
     QNetworkAccessManager m_networkManager;
 
-    QHash<QString, Group> m_groups;
+    PackageModel* m_groups;
     // For each group name, store the selection widget to retrieve UI
     // properties.
     QHash<QString, GroupSelectionWidget*> m_groupWidgets;
-    QList<QString> m_groupOrder;
 };
 
 #endif // NETINSTALLPAGE_H
diff --git a/src/modules/netinstall/NetInstallViewStep.cpp b/src/modules/netinstall/NetInstallViewStep.cpp
index 3313996b2..a653a0c0e 100644
--- a/src/modules/netinstall/NetInstallViewStep.cpp
+++ b/src/modules/netinstall/NetInstallViewStep.cpp
@@ -125,32 +125,17 @@ NetInstallViewStep::onLeave()
     cDebug() << "Leaving netinstall, adding packages to be installed"
              << "to global storage";
 
-    const QList<Group>& selectedGroups = m_widget->selectedGroups();
+    QMap<QString, QVariant> packagesWithOperation;
+    QList<QVariant> installPackages = m_widget->selectedPackages( true );
+    QList<QVariant> tryInstallPackages = m_widget->selectedPackages( false );
 
-    if ( !selectedGroups.empty() )
+    if ( !installPackages.empty() )
+        packagesWithOperation.insert( "install", installPackages );
+    if ( !tryInstallPackages.empty() )
+        packagesWithOperation.insert( "try-install", tryInstallPackages );
+
+    if ( !packagesWithOperation.isEmpty() )
     {
-        QMap<QString, QVariant> packagesWithOperation;
-        QStringList packages, critical_packages;
-
-        // We have two types of groups: "critical" (failing to install any of
-        // the packages makes Calamares fail) and "non critical" (we only log
-        // an error if the installation fails). We distinguish them here and select
-        // the correct package operation.
-        for (const Group& group : selectedGroups) {
-            if (group.critical) {
-                critical_packages += group.packages;
-            } else {
-                packages += group.packages;
-            }
-        }
-
-        if (!critical_packages.empty()) {
-            packagesWithOperation.insert( "install", critical_packages );
-        }
-        if (!packages.empty()) {
-            packagesWithOperation.insert( "try_install", packages);
-        }
-
         Calamares::GlobalStorage* gs = Calamares::JobQueue::instance()->globalStorage();
         gs->insert( "packageOperations", QVariant( packagesWithOperation ) );
     }
diff --git a/src/modules/netinstall/page_netinst.ui b/src/modules/netinstall/page_netinst.ui
index 3b7a260ec..033f30889 100644
--- a/src/modules/netinstall/page_netinst.ui
+++ b/src/modules/netinstall/page_netinst.ui
@@ -25,7 +25,7 @@
      <property name="widgetResizable">
       <bool>true</bool>
      </property>
-     <widget class="QWidget" name="groupswidget">
+     <widget class="QTreeView" name="groupswidget">
       <property name="geometry">
        <rect>
         <x>0</x>
diff --git a/src/modules/netinstall/widgets/groupselectionwidget.cpp b/src/modules/netinstall/widgets/groupselectionwidget.cpp
deleted file mode 100644
index 3048fb01f..000000000
--- a/src/modules/netinstall/widgets/groupselectionwidget.cpp
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- *   Copyright 2016, Luca Giambonini <almack@chakraos.org>
- *   Copyright 2016, Lisa Vitolo     <shainer@chakraos.org>
- *
- *   Calamares is free software: you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License as published by
- *   the Free Software Foundation, either version 3 of the License, or
- *   (at your option) any later version.
- *
- *   Calamares is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- *   GNU General Public License for more details.
- *
- *   You should have received a copy of the GNU General Public License
- *   along with Calamares. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "groupselectionwidget.h"
-
-#include <QtDebug>
-
-GroupSelectionWidget::GroupSelectionWidget( QString name, QString description, QStringList packages, bool selected, QWidget* parent ) :
-    QWidget( parent ),
-    m_isToggled( false )
-{
-    ui.setupUi( this );
-
-    connect( ui.group, &QCheckBox::toggled, this, &GroupSelectionWidget::toggleGroup );
-
-    ui.group->setText( name );
-    ui.group->setChecked( selected ); // also triggers the toggleGroup slot
-    ui.description->setText( description );
-    const int columns = 4;
-    const int rows = ( packages.size() - 1 ) / columns + 1;
-    ui.packageview->setRowCount( rows );
-    ui.packageview->setColumnCount( columns );
-
-    ui.packageview->horizontalHeader()->setSectionResizeMode( QHeaderView::Stretch );
-
-    int r = 0, c = 0;
-    for ( int i = 0; i < packages.size(); ++i )
-    {
-        ui.packageview->setItem( r++,c, new QTableWidgetItem( packages.at( i ) ) );
-        if ( r == ui.packageview->rowCount() )
-        {
-            ++c;
-            r = 0;
-        }
-    }
-
-    int rowsShown = 6;
-    rowsShown = rows < rowsShown ? rows : 6;
-    ui.packageview->setFixedHeight( rowsShown * ui.packageview->rowHeight( 0 ) );
-    ui.packageview->hide();
-}
-
-void GroupSelectionWidget::toggleGroup( bool isToggled )
-{
-    m_isToggled = isToggled;
-    emit toggled( isToggled );
-}
-
-bool GroupSelectionWidget::isToggled() const
-{
-    return m_isToggled;
-}
diff --git a/src/modules/netinstall/widgets/groupselectionwidget.h b/src/modules/netinstall/widgets/groupselectionwidget.h
deleted file mode 100644
index 1f7a0fc97..000000000
--- a/src/modules/netinstall/widgets/groupselectionwidget.h
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- *   Copyright 2016, Luca Giambonini <almack@chakraos.org>
- *   Copyright 2016, Lisa Vitolo     <shainer@chakraos.org>
- *
- *   Calamares is free software: you can redistribute it and/or modify
- *   it under the terms of the GNU General Public License as published by
- *   the Free Software Foundation, either version 3 of the License, or
- *   (at your option) any later version.
- *
- *   Calamares is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- *   GNU General Public License for more details.
- *
- *   You should have received a copy of the GNU General Public License
- *   along with Calamares. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef GROUPSELECTIONWIDGET_H
-#define GROUPSELECTIONWIDGET_H
-
-#include "ui_groupselectionwidget.h"
-
-#include <QSignalMapper>
-#include <QWidget>
-
-// Represents a widget to display and select a group.
-class GroupSelectionWidget : public QWidget
-{
-    Q_OBJECT
-public:
-    explicit GroupSelectionWidget( QString name, QString description, QStringList packages, bool selected, QWidget* parent = nullptr );
-
-    // Current status of the group: is it selected in the view?
-    bool isToggled() const;
-
-signals:
-    void toggled( bool );
-
-public slots:
-    void toggleGroup( bool isToggled );
-
-private:
-    Ui::GroupSelectionWidget ui;
-    static QSignalMapper* m_mapper;
-
-    bool m_isToggled;
-};
-
-#endif // GROUPSELECTIONWIDGET_H
diff --git a/src/modules/netinstall/widgets/groupselectionwidget.ui b/src/modules/netinstall/widgets/groupselectionwidget.ui
deleted file mode 100644
index 8093b48e1..000000000
--- a/src/modules/netinstall/widgets/groupselectionwidget.ui
+++ /dev/null
@@ -1,138 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<ui version="4.0">
- <class>GroupSelectionWidget</class>
- <widget class="QWidget" name="GroupSelectionWidget">
-  <property name="geometry">
-   <rect>
-    <x>0</x>
-    <y>0</y>
-    <width>805</width>
-    <height>62</height>
-   </rect>
-  </property>
-  <property name="sizePolicy">
-   <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
-    <horstretch>0</horstretch>
-    <verstretch>0</verstretch>
-   </sizepolicy>
-  </property>
-  <property name="windowTitle">
-   <string>Frame</string>
-  </property>
-  <layout class="QVBoxLayout" name="verticalLayout">
-   <item>
-    <widget class="QWidget" name="widget" native="true">
-     <layout class="QHBoxLayout" name="horizontalLayout">
-      <item>
-       <widget class="QCheckBox" name="group">
-        <property name="text">
-         <string>group</string>
-        </property>
-       </widget>
-      </item>
-      <item>
-       <widget class="QLabel" name="description">
-        <property name="text">
-         <string>description</string>
-        </property>
-       </widget>
-      </item>
-      <item>
-       <widget class="QPushButton" name="pushButton">
-        <property name="sizePolicy">
-         <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
-          <horstretch>0</horstretch>
-          <verstretch>0</verstretch>
-         </sizepolicy>
-        </property>
-        <property name="text">
-         <string/>
-        </property>
-        <property name="icon">
-         <iconset resource="../netinstall.qrc">
-          <normaloff>:/images/arrow-down.png</normaloff>:/images/arrow-down.png</iconset>
-        </property>
-        <property name="checkable">
-         <bool>true</bool>
-        </property>
-        <property name="checked">
-         <bool>false</bool>
-        </property>
-       </widget>
-      </item>
-     </layout>
-    </widget>
-   </item>
-   <item>
-    <widget class="QTableWidget" name="packageview">
-     <property name="enabled">
-      <bool>true</bool>
-     </property>
-     <property name="sizePolicy">
-      <sizepolicy hsizetype="Expanding" vsizetype="Maximum">
-       <horstretch>0</horstretch>
-       <verstretch>0</verstretch>
-      </sizepolicy>
-     </property>
-     <property name="minimumSize">
-      <size>
-       <width>0</width>
-       <height>0</height>
-      </size>
-     </property>
-     <property name="maximumSize">
-      <size>
-       <width>16777215</width>
-       <height>0</height>
-      </size>
-     </property>
-     <property name="editTriggers">
-      <set>QAbstractItemView::NoEditTriggers</set>
-     </property>
-     <property name="tabKeyNavigation">
-      <bool>false</bool>
-     </property>
-     <property name="showDropIndicator" stdset="0">
-      <bool>false</bool>
-     </property>
-     <property name="dragDropOverwriteMode">
-      <bool>false</bool>
-     </property>
-     <property name="selectionMode">
-      <enum>QAbstractItemView::NoSelection</enum>
-     </property>
-     <attribute name="horizontalHeaderVisible">
-      <bool>false</bool>
-     </attribute>
-     <attribute name="verticalHeaderVisible">
-      <bool>false</bool>
-     </attribute>
-    </widget>
-   </item>
-  </layout>
- </widget>
- <resources>
-  <include location="../netinstall.qrc"/>
- </resources>
- <connections>
-  <connection>
-   <sender>pushButton</sender>
-   <signal>toggled(bool)</signal>
-   <receiver>packageview</receiver>
-   <slot>setVisible(bool)</slot>
-   <hints>
-    <hint type="sourcelabel">
-     <x>772</x>
-     <y>25</y>
-    </hint>
-    <hint type="destinationlabel">
-     <x>653</x>
-     <y>61</y>
-    </hint>
-   </hints>
-  </connection>
- </connections>
- <slots>
-  <signal>toggled(bool)</signal>
- </slots>
-</ui>
diff --git a/src/modules/packages/main.py b/src/modules/packages/main.py
index 3ec60ff2d..a20833797 100644
--- a/src/modules/packages/main.py
+++ b/src/modules/packages/main.py
@@ -21,7 +21,7 @@
 import subprocess
 import libcalamares
 from libcalamares.utils import check_target_env_call, target_env_call
-from string import Template
+
 
 class PackageManager:
     """ Package manager class.
@@ -108,20 +108,10 @@ class PackageManager:
         elif self.backend == "entropy":
             check_target_env_call(["equo", "update"])
 
+    def run(self, script):
+        if script != "":
+            check_target_env_call(script.split(" "))
 
-def subst_locale(list):
-    ret = []
-    locale = libcalamares.globalstorage.value("locale")
-    if locale:
-        for e in list:
-            if  locale != "en":
-                entry = Template(e)
-                ret.append(entry.safe_substitute(LOCALE=locale))
-            elif 'LOCALE' not in e:
-                ret.append(e)
-    else:
-        ret = list
-    return ret
 
 def run_operations(pkgman, entry):
     """ Call package manager with given parameters.
@@ -130,14 +120,22 @@ def run_operations(pkgman, entry):
     :param entry:
     """
     for key in entry.keys():
-        entry[key] = subst_locale(entry[key])
         if key == "install":
             pkgman.install(entry[key])
         elif key == "try_install":
-            try:
-                pkgman.install(entry[key])
-            except subprocess.CalledProcessError:
-                libcalamares.utils.debug("WARNING: could not install packages {}".format(", ".join(entry[key])))
+            if isinstance(entry[key], list):
+                for package in entry[key]:
+                    try:
+                        pkgman.run(package["pre-script"])
+                        pkgman.install([package["package"]])
+                        pkgman.run(package["post-script"])
+                    except subprocess.CalledProcessError:
+                        libcalamares.utils.debug("WARNING: could not install packages {}", package["package"])
+            else:
+                try:
+                    pkgman.install(entry[key])
+                except subprocess.CalledProcessError:
+                    libcalamares.utils.debug("WARNING: could not install packages {}".format(", ".join(entry[key])))
         elif key == "remove":
             pkgman.remove(entry[key])
         elif key == "try_remove":