From cb7a4a9ddfbb11de1caf3f964e791017d4cac6be Mon Sep 17 00:00:00 2001
From: Marek Kubica <marek@tarides.com>
Date: Fri, 3 Jul 2026 15:08:36 +0200
Subject: [PATCH] Use same compiler settings for `.#dune` and `.#dune-static`

The nix-overlay enables `flambda` automatically and in the flake we
disable it for `dune`, instead enabling frame pointers. However, this is
not the case for `dune-static`, where we use the regular `ocaml` package
(from the overlay) which uses `flambda` but no frame pointers.

This applies the same compiler configuration to `dune-static` as to
`dune`.

Signed-off-by: Marek Kubica <marek@tarides.com>
---
 nix/dune-package.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/nix/dune-package.nix b/nix/dune-package.nix
index 9bb0a2eacc8..eb2a3a0b11c 100644
--- a/nix/dune-package.nix
+++ b/nix/dune-package.nix
@@ -41,6 +41,10 @@ let
   dune-static-overlay = self: super: {
     ocamlPackages = super.ocaml-ng.ocamlPackages_5_4.overrideScope (
       oself: osuper: {
+        ocaml = osuper.ocaml.override {
+          flambdaSupport = false;
+          framePointerSupport = true;
+        };
         dune_3 = osuper.dune_3.overrideAttrs (a: {
           src = dune-source;
           preBuild = "ocaml boot/bootstrap.ml --static";