Revert "python-wrapper: fix wrapped argv[0] w/o sed, maybe"

This reverts commit a6dd9bd0cb.

pkgs/build-support/setup-hooks/make-wrapper.sh

@@ -96,10 +96,7 @@ filterExisting() {
 # Syntax: wrapProgram <PROGRAM> <MAKE-WRAPPER FLAGS...>
 wrapProgram() {
     local prog="$1"
-    local progBasename=$(basename $prog)
-    local hiddenDir=$(dirname $prog)/.$progBasename-wrapped-bin
-    local hidden=$hiddenDir/$progBasename
-    mkdir $hiddenDir
+    local hidden="$(dirname "$prog")/.$(basename "$prog")"-wrapped
     mv $prog $hidden
     makeWrapper $hidden $prog "$@"
 }

pkgs/development/python-modules/generic/wrap.sh

@@ -26,6 +26,12 @@ wrapPythonProgramsIn() {
             # dont wrap EGG-INFO scripts since they are called from python
             if echo "$i" | grep -v EGG-INFO/scripts; then
                 echo "wrapping \`$i'..."
+                sed -i "$i" -re '1 {
+                    /^#!/!b; :r
+                    /\\$/{N;b r}
+                    /__future__|^ *(#.*)?$/{n;b r}
+                    /^ *[^# ]/i import sys; sys.argv[0] = '"'$(basename "$i")'"'
+                }'
                 wrapProgram "$i" \
                     --prefix PYTHONPATH ":" $program_PYTHONPATH \
                     --prefix PATH ":" $program_PATH