From f9a670d46de3c62be16202f186eacfee6ec096d4 Mon Sep 17 00:00:00 2001
From: mlugg <mlugg@mlugg.co.uk>
Date: Wed, 11 Jun 2025 22:00:41 +0100
Subject: [PATCH] Compilation: prevent zig1 depending on fd_readdir

This isn't really coherent to model as a `Feature`; this makes sense
because of zig1's specific environment. As such, I opted to check
`dev.env` directly.
---
 src/Compilation.zig | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/Compilation.zig b/src/Compilation.zig
index 49b2a6b8b6..9f851cf135 100644
--- a/src/Compilation.zig
+++ b/src/Compilation.zig
@@ -2589,6 +2589,11 @@ fn cleanupAfterUpdate(comp: *Compilation, tmp_dir_rand_int: u64) void {
             if (none.tmp_artifact_directory) |*tmp_dir| {
                 tmp_dir.handle.close();
                 none.tmp_artifact_directory = null;
+                if (dev.env == .bootstrap) {
+                    // zig1 uses `CacheMode.none`, but it doesn't need to know how to delete
+                    // temporary directories; it doesn't have a real cache directory anyway.
+                    return;
+                }
                 const tmp_dir_sub_path = "tmp" ++ std.fs.path.sep_str ++ std.fmt.hex(tmp_dir_rand_int);
                 comp.dirs.local_cache.handle.deleteTree(tmp_dir_sub_path) catch |err| {
                     log.warn("failed to delete temporary directory '{s}{c}{s}': {s}", .{