On Sun, 15 May 2016 11:30:00 +0200
Michał Górny <mgorny@gentoo.org> wrote:

> Do not apply PATCHES and user patches (either via the EAPI 6 default or
> pre-EAPI 5 code) when DISTUTILS_OPTIONAL is being used. In this case,
> distutils functions are usually called conditionally, in a subdirectory,
> while both PATCHES and user patches are usually intended to be applied
> top-level.
> 
> There is no ebuild relying on distutils-r1_src_prepare applying patches
> with DISTUTILS_OPTIONAL. In fact, there are ebuilds which work around
> this behavior.
> ---
>  eclass/distutils-r1.eclass | 12 +++++++-----
>  1 file changed, 7 insertions(+), 5 deletions(-)
> 
> diff --git a/eclass/distutils-r1.eclass b/eclass/distutils-r1.eclass
> index e8de5ad..afd29ed 100644
> --- a/eclass/distutils-r1.eclass
> +++ b/eclass/distutils-r1.eclass
> @@ -315,11 +315,13 @@ _distutils-r1_disable_ez_setup() {
>  distutils-r1_python_prepare_all() {
>  	debug-print-function ${FUNCNAME} "${@}"
>  
> -	if [[ ${EAPI} != [45] ]]; then
> -		default
> -	else
> -		[[ ${PATCHES} ]] && epatch "${PATCHES[@]}"
> -		epatch_user
> +	if [[ ! ${DISTUTILS_OPTIONAL} ]]; then
> +		if [[ ${EAPI} != [45] ]]; then
> +			default
> +		else
> +			[[ ${PATCHES} ]] && epatch "${PATCHES[@]}"
> +			epatch_user
> +		fi
>  	fi
>  
>  	# by default, use in-source build if python_prepare() is used

Merged.

-- 
Best regards,
Michał Górny
<http://dev.gentoo.org/~mgorny/>