From d58dae5d2f5338f849cce1f4f7268a3961466605 Mon Sep 17 00:00:00 2001
From: Thomas Krijnen <t.krijnen@gmail.com>
Date: Fri, 3 Oct 2025 18:05:39 +0200
Subject: [PATCH] nix build script add occt 7.9.1 patch

---
 nix/build-all.py                            |  6 ++++++
 nix/patches/occt/no_ExpToCasExe_7_9_1.patch | 13 +++++++++++++
 2 files changed, 19 insertions(+)
 create mode 100644 nix/patches/occt/no_ExpToCasExe_7_9_1.patch

diff --git a/nix/build-all.py b/nix/build-all.py
index 764705688f..d7b7a36e72 100644
--- a/nix/build-all.py
+++ b/nix/build-all.py
@@ -344,6 +344,12 @@ PIC = "-fPIC" if BUILD_STATIC else ""
 if any(f.startswith("py-") for f in flags):
     PYTHON_VERSIONS = [pyv for pyv in PYTHON_VERSIONS if f"py-{''.join(pyv.split('.')[:2])}" in flags]
 
+if any(f.startswith("occt-") for f in flags):
+    OCCT_VERSION = next(f.split('-', 1)[1] for f in flags if f.startswith("occt-"))
+
+print(OCCT_VERSION)
+exit()
+
 if explicit_targets:
     targets = {dep for target in explicit_targets for dep in gather_dependencies(target)}
 else:
diff --git a/nix/patches/occt/no_ExpToCasExe_7_9_1.patch b/nix/patches/occt/no_ExpToCasExe_7_9_1.patch
new file mode 100644
index 0000000000..abe2b20ef9
--- /dev/null
+++ b/nix/patches/occt/no_ExpToCasExe_7_9_1.patch
@@ -0,0 +1,13 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 34300d41ad..09b2e0d45f 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -721,6 +721,8 @@ else()
+   OCCT_CHECK_AND_UNSET ("3RDPARTY_DOT_EXECUTABLE")
+ endif()
+ 
++list (REMOVE_ITEM BUILD_TOOLKITS ExpToCasExe)
++
+ # bison
+ if (BUILD_YACCLEX)
+   list (APPEND OCCT_3RDPARTY_CMAKE_LIST "adm/cmake/bison")