From 7d9c3fd5ccff13a2799e5679df50e87939318cb9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Natalie=20Klestrup=20R=C3=B6ijezon?= <nat@nullable.se>
Date: Wed, 21 Aug 2024 12:32:06 +0200
Subject: [PATCH] vector: fix compatibility with Rust 1.80

---
 pkgs/tools/misc/vector/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/tools/misc/vector/default.nix b/pkgs/tools/misc/vector/default.nix
index 129afebe3448..b5aefdec591f 100644
--- a/pkgs/tools/misc/vector/default.nix
+++ b/pkgs/tools/misc/vector/default.nix
@@ -67,6 +67,11 @@ rustPlatform.buildRustPackage {
     ++ lib.optionals stdenv.isLinux [ rust-jemalloc-sys-unprefixed ]
     ++ lib.optionals stdenv.isDarwin [ rust-jemalloc-sys Security libiconv coreutils CoreServices SystemConfiguration ];
 
+  # Rust 1.80.0 introduced the unexepcted_cfgs lint, which requires crates to allowlist custom cfg options that they inspect.
+  # Upstream is working on fixing this in https://github.com/vectordotdev/vector/pull/20949, but silencing the lint lets us build again until then.
+  # TODO remove when upgrading Vector
+  RUSTFLAGS = "--allow unexpected_cfgs";
+
   # needed for internal protobuf c wrapper library
   PROTOC = "${protobuf}/bin/protoc";
   PROTOC_INCLUDE = "${protobuf}/include";