--- old/build/pkgs/singular/spkg-install	2015-07-26 15:34:43.000000000 +0200
+++ new/build/pkgs/singular/spkg-install	2015-09-15 20:42:51.716505855 +0200
@@ -115,6 +115,11 @@
     done
 }
 
+nix_nuke_bin_rm()
+{
+    find . -exec sed -e 's@/bin/rm@rm@g' -i '{}' ';'
+}
+
 remove_old_version()
 {
     rm -f "$SAGE_LOCAL"/bin/Singular*
@@ -306,11 +311,11 @@
 
 
 # Actually run all the functions defined above
-for i in choose_patches apply_patches remove_old_version config \
+for i in choose_patches apply_patches nix_nuke_bin_rm remove_old_version config \
   build_singular build_libsingular build_factory build_libfac \
   create_singular_script install_docs ; do
     echo "### Singular spkg-install: $i ###"
-    cd "$SRC" && $i
+    cd "$SRC" && pwd && $i
     if [ $? -ne 0 ]; then
         echo >&2 "Error building Singular (error in $i)."
         exit 1