From 1f267934d9bf65e274a3d5ed0390f0a4bf845a3c Mon Sep 17 00:00:00 2001
From: Weijia Wang <9713184+wegank@users.noreply.github.com>
Date: Tue, 15 Jul 2025 08:01:26 +0200
Subject: [PATCH] clisp: fix broken symlinks

---
 pkgs/development/interpreters/clisp/default.nix | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/pkgs/development/interpreters/clisp/default.nix b/pkgs/development/interpreters/clisp/default.nix
index e32bbbdf24d2..601aa9db8868 100644
--- a/pkgs/development/interpreters/clisp/default.nix
+++ b/pkgs/development/interpreters/clisp/default.nix
@@ -130,10 +130,16 @@ stdenv.mkDerivation {
 
   doCheck = true;
 
-  postInstall = lib.optionalString (withModules != [ ]) (
-    ''bash ./clisp-link add "$out"/lib/clisp*/base "$(dirname "$out"/lib/clisp*/base)"/full''
-    + lib.concatMapStrings (x: " " + x) withModules
-  );
+  postInstall = lib.optionalString (withModules != [ ]) ''
+    bash ./clisp-link add "$out"/lib/clisp*/base "$(dirname "$out"/lib/clisp*/base)"/full \
+      ${lib.concatMapStrings (x: " " + x) withModules}
+
+    find "$out"/lib/clisp*/full -type l -name "*.o" | while read -r symlink; do
+      if [[ "$(readlink "$symlink")" =~ (.*\/builddir\/)(.*) ]]; then
+        ln -sf "../''${BASH_REMATCH[2]}" "$symlink"
+      fi
+    done
+  '';
 
   env.NIX_CFLAGS_COMPILE = "-O0 -falign-functions=${
     if stdenv.hostPlatform.is64bit then "8" else "4"