http://devmanual.gentoo.org/ebuild-writing/eapi/index.html The pkg_postinst warning should only be shown if REPLACING_VERSIONS contains the version that the warning is meant for. I can write the patch if you approve.
Mmh, somehow I missed this addition. It would be nice if you could write the patch. And commit it. Please simply add the diff here. Thanks
Created attachment 304843 [details, diff] tcl eapi 4 patch