Remove all support of the built-in help system

The support of the built-in help accessible from spokes and hubs of all user
interfaces is removed. The `help_directory` Anaconda configuration option is
deprecated and removed. The `anaconda-user-help` package will be deprecated
and removed.

Anaconda will aim to make user interfaces self-descriptive and encourage users
to use the official documentation of specific Linux distributions available
on-line.

Additional notes:

* The Fedora built-in help content was outdated. Last change of the content
  happened six years ago (see the `anaconda-user-help` repository) and there
  is no process for keeping the help content up to date.

* The RHEL built-in help content was generated from the official on-line
  installation guide. However, the release process of this content wasn't
  always straightforward and there were issues with the scripts that generated
  this content.

* The built-in help content was displayed by the `yelp` tool. This tool was
  a common source of bugs, so it is desirable to drop this dependency.

anaconda.spec.in

@@ -30,7 +30,6 @@ Source0: https://github.com/rhinstaller/%{name}/releases/download/%{name}-%{vers
 %define fcoeutilsver 1.0.12-3.20100323git
 %define gettextver 0.19.8
 %define gtk3ver 3.22.17
-%define helpver 26.2-1
 %define isomd5sumver 1.0.10
 %define langtablever 0.0.60
 %define libarchivever 3.0.4
@@ -283,8 +282,6 @@ Requires: nm-connection-editor
 %ifnarch s390 s390x
 Requires: NetworkManager-wifi
 %endif
-Requires: anaconda-user-help >= %{helpver}
-Requires: yelp
 %if ! 0%{?rhel}
 Requires: blivet-gui-runtime >= %{blivetguiver}
 %endif

data/anaconda.conf

@@ -274,9 +274,6 @@ reformat_blocklist = /home /usr/local /opt /var/www
 # The path to a custom stylesheet.
 custom_stylesheet =
 
-# The path to a directory with help files.
-help_directory = /usr/share/anaconda/help
-
 # A list of spokes to hide in UI.
 # FIXME: Use other identification then names of the spokes.
 hidden_spokes =

data/profile.d/fedora.conf

@@ -19,7 +19,6 @@ default_scheme = BTRFS
 btrfs_compression = zstd:1
 
 [User Interface]
-help_directory = /usr/share/anaconda/help/fedora
 custom_stylesheet = /usr/share/anaconda/pixmaps/fedora.css
 
 [Payload]

data/profile.d/ovirt.conf

@@ -32,7 +32,6 @@ req_partition_sizes =
     /boot    1  GiB
 
 [User Interface]
-help_directory = /usr/share/anaconda/help/rhel
 hidden_spokes = UserSpoke
 
 [Payload]

data/profile.d/rhel.conf

@@ -37,7 +37,6 @@ default_partitioning =
 swap_is_recommended = True
 
 [User Interface]
-help_directory = /usr/share/anaconda/help/rhel
 custom_stylesheet = /usr/share/anaconda/pixmaps/redhat.css
 
 [License]

data/profile.d/rhvh.conf

@@ -38,7 +38,6 @@ req_partition_sizes =
     /boot    1  GiB
 
 [User Interface]
-help_directory = /usr/share/anaconda/help/rhel
 hidden_spokes = UserSpoke
 
 [Payload]

docs/release-notes/remove-help-support.rst

@@ -0,0 +1,15 @@
+:Type: User interfaces
+:Summary: Remove all support of the built-in help system
+
+:Description:
+    The support of the built-in help accessible from spokes and hubs of all user interfaces
+    is removed. The ``help_directory`` Anaconda configuration option is deprecated and removed.
+    The ``anaconda-user-help`` package will be deprecated and removed.
+
+    Anaconda will aim to make user interfaces self-descriptive and encourage users to use the
+    official documentation of specific Linux distributions available on-line.
+
+:Links:
+    - https://docs.fedoraproject.org/en-US/fedora/latest/getting-started/
+    - https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/
+    - https://src.fedoraproject.org/rpms/anaconda-user-help/

pyanaconda/core/configuration/ui.py

@@ -29,11 +29,6 @@ def custom_stylesheet(self):
         """The path to a custom stylesheet."""
         return self._get_option("custom_stylesheet", str)
 
-    @property
-    def help_directory(self):
-        """The path to a directory with help files."""
-        return self._get_option("help_directory", str)
-
     @property
     def hidden_spokes(self):
         """A list of spokes to hide in UI.

pyanaconda/ui/gui/__init__.py

@@ -49,7 +49,6 @@
 from pyanaconda.core.async_utils import async_action_wait
 from pyanaconda.ui.gui.utils import watch_children, unwatch_children
 from pyanaconda.ui.gui.helpers import autoinstall_stopped
-from pyanaconda.ui.lib.help import show_graphical_help_for_screen
 import os.path
 
 from pyanaconda.anaconda_loggers import get_module_logger
@@ -105,10 +104,6 @@ class GUIObject(common.UIObject):
                            that use GUI elements (Hubs & Spokes) from Anaconda
                            can override the translation domain with their own,
                            so that their subclasses are properly translated.
-       helpFile         -- The location of the yelp-compatible help file for the
-                           given GUI object. The default value of "" indicates
-                           that the object has not specific help file assigned
-                           and the default help file should be used.
     """
     builderObjects = []
     mainWidgetName = None
@@ -353,8 +348,6 @@ def __init__(self, fullscreen=False, decorated=False):
 
         # Help button mnemonics handling
         self._mnemonic_signal = None
-        # we have a sensible initial value, just in case
-        self._saved_help_button_label = _("Help!")
 
         # Apply the initial language attributes
         self._language = None
@@ -379,20 +372,6 @@ def _on_overlay_get_child_position(self, overlay_container, overlayed_widget, al
         # Return False to indicate that the child allocation is not yet set
         return False
 
-    def _on_mnemonics_visible_changed(self, window, property_type, obj):
-        # mnemonics display has been activated or deactivated,
-        # add or remove the F1 mnemonics display from the help button
-        help_button = obj.window.get_help_button()
-        if window.props.mnemonics_visible:
-            # save current label
-            old_label = help_button.get_label()
-            self._saved_help_button_label = old_label
-            # add the (F1) "mnemonics" to the help button
-            help_button.set_label("%s (F1)" % old_label)
-        else:
-            # restore the old label
-            help_button.set_label(self._saved_help_button_label)
-
     def _on_child_added(self, widget, user_data):
         # If this is GtkLabel, apply the language attribute
         if isinstance(widget, Gtk.Label):
@@ -434,17 +413,6 @@ def _setVisibleChild(self, child):
             child.window.add_accelerator("button-clicked", self._accel_group,
                     Gdk.KEY_F12, 0, 0)
 
-        # Configure the help button
-        child.window.add_accelerator("help-button-clicked", self._accel_group,
-                Gdk.KEY_F1, 0, 0)
-        child.window.add_accelerator("help-button-clicked", self._accel_group,
-                Gdk.KEY_F1, Gdk.ModifierType.MOD1_MASK, 0)
-
-        # Connect to mnemonics-visible to add the (F1) mnemonic to the button label
-        if self._mnemonic_signal:
-            self.disconnect(self._mnemonic_signal)
-        self._mnemonic_signal = self.connect("notify::mnemonics-visible", self._on_mnemonics_visible_changed, child)
-
         self._stack.set_visible_child(child.window)
 
         if child.focusWidgetName:
@@ -699,7 +667,6 @@ def _instantiateAction(self, actionClass):
 
         # Use connect_after so classes can add actions before we change screens
         obj.window.connect_after("continue-clicked", self._on_continue_clicked)
-        obj.window.connect_after("help-button-clicked", self._on_help_clicked, obj)
         obj.window.connect_after("quit-clicked", self._on_quit_clicked)
 
         return obj
@@ -907,11 +874,6 @@ def _on_continue_clicked(self, window, user_data=None):
         self._currentAction = nextAction
         self._actions.pop(0)
 
-    def _on_help_clicked(self, window, obj):
-        # the help button has been clicked, start the yelp viewer with
-        # content for the current screen
-        show_graphical_help_for_screen(obj.get_screen_id())
-
     def _on_quit_clicked(self, win, userData=None):
         if not win.get_quit_button():
             return

pyanaconda/ui/gui/spokes/__init__.py

@@ -18,7 +18,6 @@
 
 from pyanaconda.ui import common
 from pyanaconda.ui.gui import GUIObject
-from pyanaconda.ui.lib.help import show_graphical_help_for_screen
 
 from pyanaconda.anaconda_loggers import get_module_logger
 log = get_module_logger(__name__)
@@ -56,17 +55,9 @@ def __init__(self, data, storage, payload):
         GUIObject.__init__(self, data)
         common.NormalSpoke.__init__(self, storage, payload)
 
-        # Add a help handler
-        self.window.connect_after("help-button-clicked", self._on_help_clicked)
-
         # warning message
         self._current_warning_message = ""
 
-    def _on_help_clicked(self, window):
-        # the help button has been clicked, start the yelp viewer with
-        # content for the current spoke
-        show_graphical_help_for_screen(self.get_screen_id())
-
     def on_back_clicked(self, button):
         # Notify the hub that we're finished.
         # The hub will be the current-action of the main window.