From ea0e3057caa154d81dd32f587d5e7a3aa2dae07a Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <m@mitchellh.com>
Date: Sun, 18 Aug 2024 19:31:36 -0700
Subject: [PATCH] config: fix build on iOS for error set

---
 src/config/theme.zig | 24 +++++++++++++++++-------
 1 file changed, 17 insertions(+), 7 deletions(-)

diff --git a/src/config/theme.zig b/src/config/theme.zig
index aabf306ee..0054ae089 100644
--- a/src/config/theme.zig
+++ b/src/config/theme.zig
@@ -34,14 +34,24 @@ pub const Location = enum {
                 break :user internal_os.xdg.config(
                     arena_alloc,
                     .{ .subdir = subdir },
-                ) catch |err| switch (err) {
-                    error.OutOfMemory => return error.OutOfMemory,
-                    error.BufferTooSmall => return error.OutOfMemory,
+                ) catch |err| {
+                    // We need to do some comptime trick sot get the right
+                    // error set since some platforms don't support some
+                    // error types.
+                    const Error = @TypeOf(err) || switch (builtin.os.tag) {
+                        .ios => error{BufferTooSmall},
+                        else => error{},
+                    };
 
-                    // Any other error we treat as the XDG directory not
-                    // existing. Windows in particularly can return a LOT
-                    // of errors here.
-                    else => return null,
+                    switch (@as(Error, err)) {
+                        error.OutOfMemory => return error.OutOfMemory,
+                        error.BufferTooSmall => return error.OutOfMemory,
+
+                        // Any other error we treat as the XDG directory not
+                        // existing. Windows in particularly can return a LOT
+                        // of errors here.
+                        else => return null,
+                    }
                 };
             },