diff --git a/gnu/packages/engineering.scm b/gnu/packages/engineering.scm
index 782673dcac..1f3958f55c 100644
--- a/gnu/packages/engineering.scm
+++ b/gnu/packages/engineering.scm
@@ -975,16 +975,6 @@ Emacs).")
                 (string-append "NGSPICE_DLL_FILE=\""
                                (assoc-ref inputs "libngspice")
                                "/lib/libngspice.so\"")))))
-         (add-after 'unpack 'fix-python-detection
-           (lambda _
-             (substitute* "CMakeModules/FindPythonLibs.cmake"
-               (("_PYTHON3_VERSIONS 3\\.8 3\\.7")
-                "_PYTHON3_VERSIONS 3.9 3.8 3.7"))))
-         (add-after 'unpack 'add-missing-include
-           (lambda _
-             (substitute* "common/lib_tree_model.cpp"
-               (("#include <eda_pattern_match.h>" all)
-                (string-append "#include <algorithm>\n" all)))))
          (add-after 'install 'wrap-program
            ;; Ensure correct Python at runtime.
            (lambda* (#:key inputs outputs #:allow-other-keys)