config: support loading from "Application Support" directory on macOS

src/apprt/glfw.zig

@@ -724,7 +724,7 @@ pub const Surface = struct {
     /// Set the shape of the cursor.
     fn setMouseShape(self: *Surface, shape: terminal.MouseShape) !void {
         if ((comptime builtin.target.isDarwin()) and
-            !internal_os.macosVersionAtLeast(13, 0, 0))
+            !internal_os.macos.isAtLeastVersion(13, 0, 0))
         {
             // We only set our cursor if we're NOT on Mac, or if we are then the
             // macOS version is >= 13 (Ventura). On prior versions, glfw crashes

src/config/Config.zig

@@ -1809,10 +1809,15 @@ pub fn deinit(self: *Config) void {
 /// Load the configuration according to the default rules:
 ///
 ///   1. Defaults
-///   2. XDG Config File
+///   2. Configuration Files
 ///   3. CLI flags
 ///   4. Recursively defined configuration files
 ///
+/// Configuration files are loaded in the follow order:
+///
+///   1. XDG Config File
+///   2. "Application Support" Config File on macOS
+///
 pub fn load(alloc_gpa: Allocator) !Config {
     var result = try default(alloc_gpa);
     errdefer result.deinit();
@@ -2394,25 +2399,37 @@ pub fn loadFile(self: *Config, alloc: Allocator, path: []const u8) !void {
     try self.expandPaths(std.fs.path.dirname(path).?);
 }
 
-/// Load the configuration from the default configuration file. The default
+/// Load optional configuration file from `path`. All errors are ignored.
-/// configuration file is at `$XDG_CONFIG_HOME/ghostty/config`.
+pub fn loadOptionalFile(self: *Config, alloc: Allocator, path: []const u8) void {
-pub fn loadDefaultFiles(self: *Config, alloc: Allocator) !void {
+    self.loadFile(alloc, path) catch |err| switch (err) {
-    const config_path = try internal_os.xdg.config(alloc, .{ .subdir = "ghostty/config" });
-    defer alloc.free(config_path);
-
-    self.loadFile(alloc, config_path) catch |err| switch (err) {
         error.FileNotFound => std.log.info(
-            "homedir config not found, not loading path={s}",
+            "optional config file not found, not loading path={s}",
-            .{config_path},
+            .{path},
         ),
-
         else => std.log.warn(
-            "error reading config file, not loading err={} path={s}",
+            "error reading optional config file, not loading err={} path={s}",
-            .{ err, config_path },
+            .{ err, path },
         ),
     };
 }
 
+/// Load configurations from the default configuration files. The default
+/// configuration file is at `$XDG_CONFIG_HOME/ghostty/config`.
+///
+/// On macOS, `$HOME/Library/Application Support/$CFBundleIdentifier/config`
+/// is also loaded.
+pub fn loadDefaultFiles(self: *Config, alloc: Allocator) !void {
+    const xdg_path = try internal_os.xdg.config(alloc, .{ .subdir = "ghostty/config" });
+    defer alloc.free(xdg_path);
+    self.loadOptionalFile(alloc, xdg_path);
+
+    if (builtin.os.tag == .macos) {
+        const app_support_path = try internal_os.macos.getAppSupportDir(alloc, "config");
+        defer alloc.free(app_support_path);
+        self.loadOptionalFile(alloc, app_support_path);
+    }
+}
+
 /// Load and parse the CLI args.
 pub fn loadCliArgs(self: *Config, alloc_gpa: Allocator) !void {
     switch (builtin.os.tag) {

src/os/macos.zig

@@ -0,0 +1,54 @@
+const std = @import("std");
+const builtin = @import("builtin");
+const assert = std.debug.assert;
+const objc = @import("objc");
+const Allocator = std.mem.Allocator;
+
+pub const NSOperatingSystemVersion = extern struct {
+    major: i64,
+    minor: i64,
+    patch: i64,
+};
+
+/// Verifies that the running macOS system version is at least the given version.
+pub fn isAtLeastVersion(major: i64, minor: i64, patch: i64) bool {
+    assert(builtin.target.isDarwin());
+
+    const NSProcessInfo = objc.getClass("NSProcessInfo").?;
+    const info = NSProcessInfo.msgSend(objc.Object, objc.sel("processInfo"), .{});
+    return info.msgSend(bool, objc.sel("isOperatingSystemAtLeastVersion:"), .{
+        NSOperatingSystemVersion{ .major = major, .minor = minor, .patch = patch },
+    });
+}
+
+pub const NSSearchPathDirectory = enum(c_ulong) {
+    NSApplicationSupportDirectory = 14,
+};
+
+pub const NSSearchPathDomainMask = enum(c_ulong) {
+    NSUserDomainMask = 1,
+};
+
+pub fn getAppSupportDir(alloc: Allocator, sub_path: []const u8) ![]u8 {
+    assert(builtin.target.isDarwin());
+
+    const err: ?*anyopaque = undefined;
+    const NSFileManager = objc.getClass("NSFileManager").?;
+    const manager = NSFileManager.msgSend(objc.Object, objc.sel("defaultManager"), .{});
+    const url = manager.msgSend(
+        objc.Object,
+        objc.sel("URLForDirectory:inDomain:appropriateForURL:create:error:"),
+        .{
+            NSSearchPathDirectory.NSApplicationSupportDirectory,
+            NSSearchPathDomainMask.NSUserDomainMask,
+            @as(?*anyopaque, null),
+            true,
+            &err,
+        },
+    );
+    const path = url.getProperty(objc.Object, "path");
+    const c_str = path.getProperty([*:0]const u8, "UTF8String");
+    const app_support_dir = std.mem.sliceTo(c_str, 0);
+
+    return try std.fs.path.join(alloc, &.{ app_support_dir, "com.mitchellh.ghostty", sub_path });
+}

src/os/macos_version.zig

@@ -1,21 +0,0 @@
-const std = @import("std");
-const builtin = @import("builtin");
-const assert = std.debug.assert;
-const objc = @import("objc");
-
-/// Verifies that the running macOS system version is at least the given version.
-pub fn macosVersionAtLeast(major: i64, minor: i64, patch: i64) bool {
-    assert(builtin.target.isDarwin());
-
-    const NSProcessInfo = objc.getClass("NSProcessInfo").?;
-    const info = NSProcessInfo.msgSend(objc.Object, objc.sel("processInfo"), .{});
-    return info.msgSend(bool, objc.sel("isOperatingSystemAtLeastVersion:"), .{
-        NSOperatingSystemVersion{ .major = major, .minor = minor, .patch = patch },
-    });
-}
-
-pub const NSOperatingSystemVersion = extern struct {
-    major: i64,
-    minor: i64,
-    patch: i64,
-};

src/os/main.zig

@@ -8,7 +8,6 @@ const file = @import("file.zig");
 const flatpak = @import("flatpak.zig");
 const homedir = @import("homedir.zig");
 const locale = @import("locale.zig");
-const macos_version = @import("macos_version.zig");
 const mouse = @import("mouse.zig");
 const openpkg = @import("open.zig");
 const pipepkg = @import("pipe.zig");
@@ -21,6 +20,7 @@ pub const hostname = @import("hostname.zig");
 pub const passwd = @import("passwd.zig");
 pub const xdg = @import("xdg.zig");
 pub const windows = @import("windows.zig");
+pub const macos = @import("macos.zig");
 
 // Functions and types
 pub const CFReleaseThread = @import("cf_release_thread.zig");
@@ -37,7 +37,6 @@ pub const freeTmpDir = file.freeTmpDir;
 pub const isFlatpak = flatpak.isFlatpak;
 pub const home = homedir.home;
 pub const ensureLocale = locale.ensureLocale;
-pub const macosVersionAtLeast = macos_version.macosVersionAtLeast;
 pub const clickInterval = mouse.clickInterval;
 pub const open = openpkg.open;
 pub const pipe = pipepkg.pipe;