config: add shell option to hide the shell session

The shell session is unconditionally added to the session list with no way
to hide it. This is inconsistent with xinitrc, which is omitted when set
to null. Adds a shell boolean config option (default true) that hides the
shell session when set to false.

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

@@ -80,6 +80,7 @@ path: ?[]const u8 = "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bi
 restart_cmd: []const u8 = "/sbin/shutdown -r now",
 restart_key: []const u8 = "F2",
 save: bool = true,
+shell: 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",

src/main.zig

@@ -725,18 +725,20 @@ 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);
 
-    addOtherEnvironment(&state.session, state.lang, .shell, null) catch |err| {
-        try state.info_line.addMessage(
-            state.lang.err_alloc,
-            state.config.error_bg,
-            state.config.error_fg,
-        );
-        try state.log_file.err(
-            "sys",
-            "failed to add shell environment: {s}",
-            .{@errorName(err)},
-        );
-    };
+    if (state.config.shell) {
+        addOtherEnvironment(&state.session, state.lang, .shell, null) catch |err| {
+            try state.info_line.addMessage(
+                state.lang.err_alloc,
+                state.config.error_bg,
+                state.config.error_fg,
+            );
+            try state.log_file.err(
+                "sys",
+                "failed to add shell environment: {s}",
+                .{@errorName(err)},
+            );
+        };
+    }
 
     if (build_options.enable_x11_support) {
         if (state.config.xinitrc) |xinitrc_cmd| {