config: add shell option to hide the shell session (#955)

The shell session is unconditionally added to the session list with no way to hide it. This is inconsistent with `xinitrc`, which is omitted from the list when set to `null`.

This change adds a `shell` boolean config option (default `true`). Setting it to `false` hides the shell session from the list, following the same pattern as `xinitrc`.

Co-authored-by: Jackson Delahunt <jackson@stemn.com>
Reviewed-on: https://codeberg.org/fairyglade/ly/pulls/955
Reviewed-by: AnErrupTion <anerruption+codeberg@disroot.org>
Co-authored-by: Jackson Delahunt <sabrehagen@noreply.codeberg.org>
Co-committed-by: Jackson Delahunt <sabrehagen@noreply.codeberg.org>

res/config.ini

@@ -330,6 +330,10 @@ session_log = .local/state/ly-session.log
 # Setup command
 setup_cmd = $CONFIG_DIRECTORY/ly/setup.sh
 
+# Show the shell session in the session list
+# If false, the shell session will be hidden
+shell = true
+
 # Specifies the key combination used for showing the password
 show_password_key = F7
 

src/config/Config.zig

@@ -83,6 +83,7 @@ save: bool = true,
 service_name: [:0]const u8 = "ly",
 session_log: ?[]const u8 = "ly-session.log",
 setup_cmd: []const u8 = build_options.config_directory ++ "/ly/setup.sh",
+shell: bool = true,
 show_password_key: []const u8 = "F7",
 show_tty: bool = false,
 shutdown_cmd: []const u8 = "/sbin/shutdown -a now",

src/main.zig

@@ -737,6 +737,7 @@ pub fn main() !void {
     try state.buffer.registerKeybind(&state.login.label.keybinds, "H", &viGoLeft, &state);
     try state.buffer.registerKeybind(&state.login.label.keybinds, "L", &viGoRight, &state);
 
+    if (state.config.shell) {
         addOtherEnvironment(&state.session, state.lang, .shell, null) catch |err| {
             try state.info_line.addMessage(
                 state.lang.err_alloc,
@@ -749,6 +750,7 @@ pub fn main() !void {
                 .{@errorName(err)},
             );
         };
+    }
 
     if (build_options.enable_x11_support) {
         if (state.config.xinitrc) |xinitrc_cmd| {