Created attachment 278633 [details, diff] pypy-1.5-distutils_scripts_location.patch distutils of PyPy should install scripts in /usr/bin. Then python_merge_intermediate_installation_images() will rename them by adding "-2.7-pypy-1.5" suffix and they will be easily usable by users without changing of PATH. I'm attaching pypy-1.5-distutils_scripts_location.patch, which probably works.
Fixed in pypy-1.7.