[Buildroot] [PATCH] package/python-txtorcon.mk: drop _py3 file for python 2.x to fix pycompile issue

[Baruch Siach <baruch@tkos.co.il>]

Hi Peter,

On Wed, Sep 30 2020, Peter Korsgaard wrote:
> Fixes:
> http://autobuild.buildroot.net/results/76b580000e6311e88584874f942517badd6fadf6/
>
> python-txtorcon DOES support python 2.x, but it contains some optional
> python 3 / async code in controller_py3.py which is conditionally used from
> controller.py:
>
> try:
>     from .controller_py3 import _AsyncOnionAuthContext
>     HAVE_ASYNC = True
> except Exception:
>     HAVE_ASYNC = False
>
> pycompile unfortunately errors out on the async code:
>
> ../scripts/pycompile.py ..
> error:   File "/usr/lib/python2.7/site-packages/txtorcon/controller_py3.py", line 13
>     async def __aenter__(self):
>             ^
> SyntaxError: invalid syntax
>
> As a workaround, simply drop the unusable _py3 file from TARGET_DIR if
> building for python 2.x.
>
> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
> ---
>  package/python-txtorcon/python-txtorcon.mk | 9 +++++++++
>  1 file changed, 9 insertions(+)
>
> diff --git a/package/python-txtorcon/python-txtorcon.mk b/package/python-txtorcon/python-txtorcon.mk
> index a01c0b2511..e25ce8ba38 100644
> --- a/package/python-txtorcon/python-txtorcon.mk
> +++ b/package/python-txtorcon/python-txtorcon.mk
> @@ -11,4 +11,13 @@ PYTHON_TXTORCON_SETUP_TYPE = setuptools
>  PYTHON_TXTORCON_LICENSE = MIT
>  PYTHON_TXTORCON_LICENSE_FILES = LICENSE
>  
> +ifeq ($(BR2_PACKAGE_PYTHON),y)
> +# only needed/valid for python 3.x
> +define PYTHON_TXTORCON_RM_PY3_FILE
> +	rm -f $(TARGET_DIR)//usr/lib/python*/site-packages/txtorcon/controller_py3.py

Redundant '/' before 'usr/'.

baruch

> +endef
> +
> +PYTHON_TXTORCON_POST_INSTALL_TARGET_HOOKS += PYTHON_TXTORCON_RM_PY3_FILE
> +endif
> +
>  $(eval $(python-package))

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