From 470ee5bfaf5293c7215019b9ae1456eb03ffc7eb Mon Sep 17 00:00:00 2001
From: Sam <30577766+Samasaur1@users.noreply.github.com>
Date: Thu, 18 Sep 2025 11:40:55 -0700
Subject: [PATCH] swiftPackages.swift: enable remaining compiler features

There are remaining features that are not enabled, but they depend on a
host Swift with which to compile.
---
 pkgs/development/compilers/swift/compiler/default.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/development/compilers/swift/compiler/default.nix b/pkgs/development/compilers/swift/compiler/default.nix
index 305ff73cbb8a..ab08b36f0d51 100644
--- a/pkgs/development/compilers/swift/compiler/default.nix
+++ b/pkgs/development/compilers/swift/compiler/default.nix
@@ -540,8 +540,11 @@ stdenv.mkDerivation {
       -DBOOTSTRAPPING_MODE=BOOTSTRAPPING${lib.optionalString stdenv.hostPlatform.isDarwin "-WITH-HOSTLIBS"}
       -DSWIFT_ENABLE_EXPERIMENTAL_DIFFERENTIABLE_PROGRAMMING=ON
       -DSWIFT_ENABLE_EXPERIMENTAL_CONCURRENCY=ON
+      -DSWIFT_ENABLE_EXPERIMENTAL_CXX_INTEROP=ON
       -DSWIFT_ENABLE_EXPERIMENTAL_DISTRIBUTED=ON
       -DSWIFT_ENABLE_EXPERIMENTAL_STRING_PROCESSING=ON
+      -DSWIFT_ENABLE_BACKTRACING=ON
+      -DSWIFT_ENABLE_EXPERIMENTAL_OBSERVATION=ON
       -DLLVM_DIR=$SWIFT_BUILD_ROOT/llvm/lib/cmake/llvm
       -DClang_DIR=$SWIFT_BUILD_ROOT/llvm/lib/cmake/clang
       -DSWIFT_PATH_TO_CMARK_SOURCE=$SWIFT_SOURCE_ROOT/swift-cmark