From bd85e13c654c827001eda672b136a5026c08653c Mon Sep 17 00:00:00 2001
From: Luc Grosheintz <luc.grosheintz@gmail.com>
Date: Thu, 31 Oct 2024 08:36:14 +0100
Subject: [PATCH] For CoreNEURON, DERIVATIVE doesn't need sympy.

---
 src/main.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main.cpp b/src/main.cpp
index b63b7b0c7..d38c6bef4 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -517,7 +517,7 @@ int run_nmodl(int argc, const char* argv[]) {
 
             enable_sympy(solver_exists(*ast, "derivimplicit"), "'SOLVE ... METHOD derivimplicit'");
             enable_sympy(node_exists(*ast, ast::AstNodeType::LINEAR_BLOCK), "'LINEAR' block");
-            enable_sympy(node_exists(*ast, ast::AstNodeType::DERIVATIVE_BLOCK),
+            enable_sympy(neuron_code && node_exists(*ast, ast::AstNodeType::DERIVATIVE_BLOCK),
                          "'DERIVATIVE' block");
             enable_sympy(node_exists(*ast, ast::AstNodeType::NON_LINEAR_BLOCK),
                          "'NONLINEAR' block");