From 9dae9f6cab6f545fc3d155c745ac80798b560702 Mon Sep 17 00:00:00 2001
From: Sergei Zimmerman <sergei@zimmerman.foo>
Date: Sun, 20 Jul 2025 21:45:39 +0300
Subject: [PATCH] nix-cli: Speed up builds by using precompiled headers

---
 src/nix/meson.build                | 1 +
 src/nix/pch/precompiled-headers.hh | 3 +++
 2 files changed, 4 insertions(+)
 create mode 100644 src/nix/pch/precompiled-headers.hh

diff --git a/src/nix/meson.build b/src/nix/meson.build
index 0ba8bdd46..586ee15c3 100644
--- a/src/nix/meson.build
+++ b/src/nix/meson.build
@@ -186,6 +186,7 @@ this_exe = executable(
   include_directories : include_dirs,
   link_args: linker_export_flags,
   install : true,
+  cpp_pch : ['pch/precompiled-headers.hh']
 )
 
 meson.override_find_program('nix', this_exe)
diff --git a/src/nix/pch/precompiled-headers.hh b/src/nix/pch/precompiled-headers.hh
new file mode 100644
index 000000000..5b320c861
--- /dev/null
+++ b/src/nix/pch/precompiled-headers.hh
@@ -0,0 +1,3 @@
+#include "nix/cmd/command.hh"
+#include "nix/expr/eval.hh"
+#include "nix/main/shared.hh"