On Fri, 29 Jul 2016 22:36:01 +0300
Andrew Savchenko <bircoph@gentoo.org> wrote:

> diff --git a/eclass/subversion.eclass b/eclass/subversion.eclass
> index c45c725..489e448 100644
> --- a/eclass/subversion.eclass
> +++ b/eclass/subversion.eclass
> @@ -21,10 +21,17 @@ case "${EAPI:-0}" in
>  		EXPORT_FUNCTIONS src_unpack pkg_preinst
>  		DEPEND="dev-vcs/subversion"
>  		;;
> -	*)
> +	2|3|4|5)
>  		EXPORT_FUNCTIONS src_unpack src_prepare pkg_preinst
>  		DEPEND="|| ( dev-vcs/subversion[http] dev-vcs/subversion[webdav-neon] dev-vcs/subversion[webdav-serf] )"
>  		;;
> +	6)
> +		EXPORT_FUNCTIONS src_unpack pkg_preinst
> +		DEPEND="|| ( dev-vcs/subversion[http] dev-vcs/subversion[webdav-neon] dev-vcs/subversion[webdav-serf] )"
> +		;;
> +	*)
> +		die "EAPI ${EAPI} is not supported in subversion.eclass"
> +		;;
>  esac
>  
>  DEPEND+=" net-misc/rsync"
> @@ -116,7 +123,8 @@ ESVN_PROJECT="${ESVN_PROJECT:-${PN/-svn}}"
>  
>  # @ECLASS-VARIABLE: ESVN_BOOTSTRAP
>  # @DESCRIPTION:
> -# bootstrap script or command like autogen.sh or etc..
> +# Bootstrap script or command like autogen.sh or etc..
> +# Removed in EAPI 6 and later.
>  ESVN_BOOTSTRAP="${ESVN_BOOTSTRAP:-}"
>  
>  # @ECLASS-VARIABLE: ESVN_PATCHES
> @@ -127,6 +135,8 @@ ESVN_BOOTSTRAP="${ESVN_BOOTSTRAP:-}"
>  #
>  # Patches are searched both in ${PWD} and ${FILESDIR}, if not found in either
>  # location, the installation dies.
> +#
> +# Removed in EAPI 6 and later, use PATCHES instead.
>  ESVN_PATCHES="${ESVN_PATCHES:-}"

It would be a good idea to check if the variables are set and die if
they are, so people don't accidentally use them.

>  
>  # @ECLASS-VARIABLE: ESVN_RESTRICT
> @@ -355,7 +365,10 @@ subversion_fetch() {
>  # @FUNCTION: subversion_bootstrap
>  # @DESCRIPTION:
>  # Apply patches in ${ESVN_PATCHES} and run ${ESVN_BOOTSTRAP} if specified.
> +# Removed in EAPI 6 and later.
>  subversion_bootstrap() {
> +	has "${EAPI:-0}" 6 && die "${FUNCNAME[1]} is removed from subversion.eclass in EAPI 6 and later"
> +

Reverse the logic. This will require updating in every EAPI while it is
rather unlikely the next EAPIs will return to previous behavior.

>  	if has "export" ${ESVN_RESTRICT}; then
>  		return
>  	fi
> @@ -432,7 +445,9 @@ subversion_src_unpack() {
>  # @FUNCTION: subversion_src_prepare
>  # @DESCRIPTION:
>  # Default src_prepare. Bootstrap.
> +# Removed in EAPI 6 and later.
>  subversion_src_prepare() {
> +	has "${EAPI:-0}" 6 && die "${FUNCNAME[1]} is removed from subversion.eclass in EAPI 6 and later"
>  	subversion_bootstrap || die "${ESVN}: unknown problem occurred in subversion_bootstrap."
>  }
>  



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