[gentoo-dev] sci-geosciences/routino: DISTUTILS_USE_SETUPTOOLS=no -> DISTUTILS_USE_PEP517=?

[Andrey Grozin]

Hello *,

sci-geosciences/routino has the USE flag python.
I've just changed
PYTHON_COMPAT=( python3_{9..10} )
to
PYTHON_COMPAT=( python3_{9..11} )
in sci-geosciences/routino, routino[python] builds fine. The ebuild 
contains the lines

DISTUTILS_USE_SETUPTOOLS=no
PYTHON_COMPAT=( python3_{9..11} )
inherit toolchain-funcs distutils-r1

and pkgcheck scan complains that it is not PEP517. I've tried to change
DISTUTILS_USE_SETUPTOOLS=no
to
DISTUTILS_USE_PEP517=setuptools
But then emerging routino[python] leads to lots of strange things:

  * python3_9: running distutils-r1_run_phase python_install
python3.9 setup.py install
/usr/lib/python3.9/site-packages/setuptools/command/install.py:34: 
SetuptoolsDeprecationWarning: setup.py install is deprecated. Use build 
and pip and other standards-based tools.
   warnings.warn(
/usr/lib/python3.9/site-packages/setuptools/command/easy_install.py:144: 
EasyInstallDeprecationWarning: easy_install command is deprecated. Use 
build and pip and other standards-based tools.
   warnings.warn(
  * ACCESS DENIED:  open_wr: 
/usr/lib/python3.9/site-packages/test-easy-install-190.write-test
error: can't create or remove files in install directory

The following error occurred while trying to add or remove files in the
installation directory:

     [Errno 13] Permission denied: 
'/usr/lib/python3.9/site-packages/test-easy-install-190.write-test'

The installation directory you specified (via --install-dir, --prefix, or
the distutils default setting) was:

     /usr/lib/python3.9/site-packages/

Perhaps your account does not have write access to this directory?  If the
installation directory is a system-owned directory, you may need to sign 
in
as the administrator or "root" account.  If you do not have administrative
access to this machine, you may wish to choose a different installation
directory, preferably one that is listed in your PYTHONPATH environment
variable.

For information on other options, you may wish to consult the
documentation at:

   https://setuptools.pypa.io/en/latest/deprecated/easy_install.html

Please make the appropriate changes for your system and try again.

  * ERROR: sci-geosciences/routino-3.3.3-r4::grozin failed (install phase):
  *   (no error message)
  *
  * Call stack:
  *     ebuild.sh, line  136:  Called src_install
  *   environment, line 3349:  Called distutils-r1_src_install
  *   environment, line 1553:  Called _distutils-r1_run_foreach_impl 
'python_install'
  *   environment, line  690:  Called python_foreach_impl 
'distutils-r1_run_phase' 'python_install'
  *   environment, line 3027:  Called multibuild_foreach_variant 
'_python_multibuild_wrapper' 'distutils-r1_run_phase' 'python_install'
  *   environment, line 2586:  Called _multibuild_run 
'_python_multibuild_wrapper' 'distutils-r1_run_phase' 'python_install'
  *   environment, line 2584:  Called _python_multibuild_wrapper 
'distutils-r1_run_phase' 'python_install'
  *   environment, line 1022:  Called distutils-r1_run_phase 
'python_install'
  *   environment, line 1511:  Called python_install
  *   environment, line 3161:  Called esetup.py 'install'
  *   environment, line 2118:  Called die
  * The specific snippet of code:
  *       "${@}" || die -n;

So,
setup.py install is deprecated
easy_install command is deprecated
and it tries to install test-easy-install-190.write-test to some strange 
place. Any idea what I should use in DISTUTILS_USE_PEP517?

Andrey