On 04/28/2017 07:06 AM, Michał Górny wrote:
> Add a @SUPPORTED_EAPIS tag that can be used to explicitly provide a list
> of EAPIs that are supported by the eclass. The main goal is to make it
> possible to extract this list with relative ease, for scripting
> purposes. It is not included explicitly in the manpages at the moment.
> 
> The first use case is to make it possible to explicitly distinguish
> eclasses that do not support a specific EAPI from eclasses that are not
> used by any ebuilds using a specific EAPI. Therefore, it will make it
> possible to easily detect when we can deprecate old EAPIs from eclasses.
> ---
>  app-portage/eclass-manpages/files/eclass-to-manpage.awk | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/app-portage/eclass-manpages/files/eclass-to-manpage.awk b/app-portage/eclass-manpages/files/eclass-to-manpage.awk
> index 0b65162c04ec..fe7e9c12d8f5 100644
> --- a/app-portage/eclass-manpages/files/eclass-to-manpage.awk
> +++ b/app-portage/eclass-manpages/files/eclass-to-manpage.awk
> @@ -18,6 +18,7 @@
>  # <optional; description of how to report bugs;
>  #  default: tell people to use bugs.gentoo.org>
>  # @VCSURL: <optional; url to vcs for this eclass; default: https://gitweb.gentoo.org/repo/gentoo.git/log/eclass/@ECLASS@>
> +# @SUPPORTED_EAPIS: <optional; space-separated list of EAPIs>
>  # @BLURB: <required; short description>
>  # @DESCRIPTION:
>  # <optional; long description>
> @@ -147,6 +148,7 @@ function handle_eclass() {
>  	eclass = $3
>  	eclass_maintainer = ""
>  	eclass_author = ""
> +	supported_eapis = ""
>  	blurb = ""
>  	desc = ""
>  	example = ""
> @@ -176,6 +178,8 @@ function handle_eclass() {
>  		reporting_bugs = eat_paragraph()
>  	if ($2 == "@VCSURL:")
>  		vcs_url = eat_line()
> +	if ($2 == "@SUPPORTED_EAPIS:")
> +		supported_eapis = eat_line()
>  	if ($2 == "@BLURB:")
>  		blurb = eat_line()
>  	if ($2 == "@DESCRIPTION:")
> 

Looks like something eclass developers could really use. I say go for
it! I'm not sure what you're talking about regarding _ vs. -; do you
mean the variable name? I think _ makes a bit more sense there since we
use INSTALL_MASK, PYTHON_SINGLE_TARGET, or other variable names with
underscores. Using a hyphen would make it stick out from other similarly
structured variable names.

-- 
Daniel Campbell - Gentoo Developer
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