Don't show Thunderbird on Kubuntu.

common/modules/pkgselect/PackageSelectViewStep.cpp

@@ -1,6 +1,7 @@
 #include "PackageSelectViewStep.h"
 #include "JobQueue.h"
 #include "GlobalStorage.h"
+#include "Branding.h"
 #include "network/Manager.h"
 
 #include <QVariantMap>
@@ -151,6 +152,16 @@ void PackageSelectViewStep::onActivate()
         ui->krita_button->setEnabled(false);
     }
 
+    // Thunderbird exists on Kubuntu already
+    if (Calamares::Branding::instance()->componentName() == "kubuntu") {
+      ui->thunderbird_button->setChecked(false);
+      ui->thunderbird_button->setEnabled(false);
+      ui->thunderbird_button->setVisible(false);
+      ui->thunderbird_text->setVisible(false);
+      ui->thunderbird_spacer->changeSize(0, 0, QSizePolicy::Fixed, QSizePolicy::Fixed);
+      ui->thunderbird_spacer->invalidate();
+    }
+
     // Connect the storage items
     /// Full/Normal/Minimal
     connect(ui->minimal_button, &QRadioButton::toggled, this, &PackageSelectViewStep::updatePackageSelections);

common/modules/pkgselect/pkgselect.ui

@@ -407,7 +407,7 @@ QLabel {
         </widget>
        </item>
        <item row="6" column="1">
-        <spacer name="verticalSpacer_9">
+        <spacer name="thunderbird_spacer">
          <property name="orientation">
           <enum>Qt::Vertical</enum>
          </property>

debian/changelog

@@ -1,3 +1,10 @@
+calamares-settings-ubuntu (1:24.04.36) noble; urgency=medium
+
+  * Don't show Thunderbird as an installable third-party app on Kubuntu.
+    (LP: #2062438)
+
+ -- Aaron Rainbolt <arraybolt3@ubuntu.com>  Fri, 19 Apr 2024 17:38:06 -0500
+
 calamares-settings-ubuntu (1:24.04.35) noble; urgency=medium
 
   * Remove timeouts for network-related package commands. (LP: #2062106)