From 8277b50b6f6d8bbac7bbe4ba3a1009fe49a45990 Mon Sep 17 00:00:00 2001
From: Sergei Zimmerman <145775305+xokdvium@users.noreply.github.com>
Date: Sat, 19 Oct 2024 00:40:14 +0300
Subject: [PATCH] fix(nix/eval.cc): move call to `fs::create_directory` out of
 `assert`

If the call is inside the assertion, then in non-assert builds
the call would be stripped out. This is highly unexpected.
---
 src/nix/eval.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/nix/eval.cc b/src/nix/eval.cc
index 04b18ff4134..babf2ca3287 100644
--- a/src/nix/eval.cc
+++ b/src/nix/eval.cc
@@ -89,8 +89,9 @@ struct CmdEval : MixJSON, InstallableValueCommand, MixReadOnlyOption
                     // FIXME: disallow strings with contexts?
                     writeFile(path.string(), v.string_view());
                 else if (v.type() == nAttrs) {
+                    [[maybe_unused]] bool directoryCreated = fs::create_directory(path);
                     // Directory should not already exist
-                    assert(fs::create_directory(path.string()));
+                    assert(directoryCreated);
                     for (auto & attr : *v.attrs()) {
                         std::string_view name = state->symbols[attr.name];
                         try {