From 8855e5cbdddee60c26da516b85298f5b43ef13d4 Mon Sep 17 00:00:00 2001
From: Weijia Wang <9713184+wegank@users.noreply.github.com>
Date: Sat, 26 Apr 2025 19:52:34 +0200
Subject: [PATCH 1/2] ocaml: use bytecode compiler on loongarch64-linux

---
 pkgs/development/compilers/ocaml/generic.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/compilers/ocaml/generic.nix b/pkgs/development/compilers/ocaml/generic.nix
index b0398fdc39cb..7a85f303fd06 100644
--- a/pkgs/development/compilers/ocaml/generic.nix
+++ b/pkgs/development/compilers/ocaml/generic.nix
@@ -49,7 +49,7 @@ let
 in
 
 let
-  useNativeCompilers = !stdenv.hostPlatform.isMips;
+  useNativeCompilers = !stdenv.hostPlatform.isMips && !stdenv.hostPlatform.isLoongArch64;
   inherit (lib)
     optional
     optionals

From 11fcf324796b9b78f5e2636f7e3ef3e007e35a38 Mon Sep 17 00:00:00 2001
From: Weijia Wang <9713184+wegank@users.noreply.github.com>
Date: Sat, 26 Apr 2025 19:59:34 +0200
Subject: [PATCH 2/2] ocamlPackages.findlib: fix build with bytecode mode

---
 pkgs/development/tools/ocaml/findlib/default.nix | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/pkgs/development/tools/ocaml/findlib/default.nix b/pkgs/development/tools/ocaml/findlib/default.nix
index b0d8326fc98d..4d8f48f6f1c7 100644
--- a/pkgs/development/tools/ocaml/findlib/default.nix
+++ b/pkgs/development/tools/ocaml/findlib/default.nix
@@ -39,10 +39,13 @@ stdenv.mkDerivation rec {
     "${placeholder "out"}/etc/findlib.conf"
   ];
 
-  buildFlags = [
-    "all"
-    "opt"
-  ];
+  buildFlags =
+    [
+      "all"
+    ]
+    ++ lib.optionals ocaml.nativeCompilers [
+      "opt"
+    ];
 
   setupHook = writeText "setupHook.sh" ''
     addOCamlPath () {