diff --git a/pkgs/build-support/setup-hooks/make-wrapper.sh b/pkgs/build-support/setup-hooks/make-wrapper.sh
index 7d0f88abb855..d3db0b64bd53 100644
--- a/pkgs/build-support/setup-hooks/make-wrapper.sh
+++ b/pkgs/build-support/setup-hooks/make-wrapper.sh
@@ -16,7 +16,7 @@ makeWrapper() {
             varName=${params[$((n + 1))]}
             value=${params[$((n + 2))]}
             n=$((n + 2))
-            echo "export $varName=$value" >> $wrapper
+            echo "export $varName='$value'" >> $wrapper
         fi
 
         if test "$p" = "--unset"; then
diff --git a/pkgs/development/python-modules/generic/wrap.sh b/pkgs/development/python-modules/generic/wrap.sh
index a67ea51f5a9b..efbb1e737876 100644
--- a/pkgs/development/python-modules/generic/wrap.sh
+++ b/pkgs/development/python-modules/generic/wrap.sh
@@ -46,16 +46,15 @@ wrapPythonProgramsIn() {
                 # wrapProgram creates the executable shell script described
                 # above. The script will set PYTHONPATH and PATH variables.!
                 # (see pkgs/build-support/setup-hooks/make-wrapper.sh)
-                local wrap_args="$f \
-                                 --prefix PYTHONPATH ':' $program_PYTHONPATH \
-                                 --prefix PATH ':' $program_PATH:$dir/bin"
+                local -a wrap_args=("$f"
+                                 --prefix PYTHONPATH ':' "$program_PYTHONPATH"
+                                 --prefix PATH ':' "$program_PATH:$dir/bin")
 
                 # Add any additional arguments provided by makeWrapperArgs
                 # argument to buildPythonPackage.
-                for arg in $makeWrapperArgs; do
-                    wrap_args="$wrap_args $arg"
-                done
-                wrapProgram $wrap_args
+                local -a user_args="($makeWrapperArgs)"
+                local -a wrapProgramArgs=("${wrap_args[@]}" "${user_args[@]}")
+                wrapProgram "${wrapProgramArgs[@]}"
             fi
         fi
     done