The rest of the replacements are in src_prepare() to keep the patch
small.

diff --git a/cmake/sources-python.cmake b/cmake/sources-python.cmake
index ac1c94c..e5039bf 100644
--- a/cmake/sources-python.cmake
+++ b/cmake/sources-python.cmake
@@ -1,6 +1,5 @@
 set(include_dirs_python
     $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/extern>
-    $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/extern/pdqsort>
     $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/extern/zstr>
     $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/highs>
     $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/highs/interfaces>
@@ -292,7 +291,6 @@ set(highs_sources_python
     highs/util/stringutil.cpp)
 
 set(highs_headers_python
-    extern/pdqsort/pdqsort.h
     highs/interfaces/highs_c_api.h
     highs/io/Filereader.h
     highs/io/FilereaderLp.h
diff --git a/cmake/sources.cmake b/cmake/sources.cmake
index 1e605de..983833a 100644
--- a/cmake/sources.cmake
+++ b/cmake/sources.cmake
@@ -1,6 +1,5 @@
 set(include_dirs
   $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/extern>
-  $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/extern/pdqsort>
   $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/extern/zstr>
   $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/highs>
   $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/highs/interfaces>
@@ -447,7 +446,6 @@ set(highs_sources
 
 # add catch header?
 set(highs_headers
-    ../extern/pdqsort/pdqsort.h
     ../extern/zstr/strict_fstream.hpp
     ../extern/zstr/zstr.hpp
     interfaces/highs_c_api.h
--