From 70fa328574b926238c4fcd91786da6d850ce423a Mon Sep 17 00:00:00 2001
From: Daniel Barlow <dan@telent.net>
Date: Sun, 9 Oct 2022 09:55:30 +0100
Subject: [PATCH] support out-of-tree module builds in vmlinux derivation

run "make modules_prepare" to create scripts/modules.lds
---
 kernel/vmlinux.nix | 2 +-
 modules/base.nix   | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/kernel/vmlinux.nix b/kernel/vmlinux.nix
index 6851d4d..e0aa377 100644
--- a/kernel/vmlinux.nix
+++ b/kernel/vmlinux.nix
@@ -86,7 +86,7 @@ stdenv.mkDerivation rec {
 
   KBUILD_BUILD_HOST = "liminix.builder";
   buildPhase = ''
-    make -C ${tree} vmlinux
+    make -C ${tree} vmlinux modules_prepare
   '';
 
   installPhase = ''
diff --git a/modules/base.nix b/modules/base.nix
index a42e08d..b11a01a 100644
--- a/modules/base.nix
+++ b/modules/base.nix
@@ -53,6 +53,9 @@ in {
         IKCONFIG = "y";
         IKCONFIG_PROC = "y";
         PROC_FS = "y";
+
+        MODULES = "y";
+
         # s6-linux-init mounts this on /dev
         DEVTMPFS = "y";
         # some or all of these may be fix for "tmpfs: Unknown parameter 'mode'" error