Either mask USE="nsplugin" for this package in your profiles, or keyword net-misc/npapi-sdk (notice that it's just headers, so keywording is likely an viable option) This is a prerequisite for masking net-libs/xulrunner as per: DEPEND.bad 12 dev-java/icedtea-web/icedtea-web-1.2.ebuild: ~ia64(default/linux/ia64/10.0/server) ['>=net-misc/npapi-sdk-0.27'] dev-java/icedtea-web/icedtea-web-1.2.ebuild: ~ia64(default/linux/ia64/10.0/developer) ['>=net-misc/npapi-sdk-0.27'] dev-java/icedtea-web/icedtea-web-1.2.ebuild: ~ia64(default/linux/ia64/10.0/desktop/kde) ['>=net-misc/npapi-sdk-0.27'] dev-java/icedtea-web/icedtea-web-1.2.ebuild: ~ia64(default/linux/ia64/10.0/desktop/gnome) ['>=net-misc/npapi-sdk-0.27'] dev-java/icedtea-web/icedtea-web-1.2.ebuild: ~ia64(default/linux/ia64/10.0/desktop) ['>=net-misc/npapi-sdk-0.27'] dev-java/icedtea-web/icedtea-web-1.2.ebuild: ~ia64(default/linux/ia64/10.0) ['>=net-misc/npapi-sdk-0.27'] dev-java/icedtea-web/icedtea-web-1.2-r7.ebuild: ~ia64(default/linux/ia64/10.0/server) ['>=net-misc/npapi-sdk-0.27'] dev-java/icedtea-web/icedtea-web-1.2-r7.ebuild: ~ia64(default/linux/ia64/10.0/developer) ['>=net-misc/npapi-sdk-0.27'] dev-java/icedtea-web/icedtea-web-1.2-r7.ebuild: ~ia64(default/linux/ia64/10.0/desktop/kde) ['>=net-misc/npapi-sdk-0.27'] dev-java/icedtea-web/icedtea-web-1.2-r7.ebuild: ~ia64(default/linux/ia64/10.0/desktop/gnome) ['>=net-misc/npapi-sdk-0.27'] dev-java/icedtea-web/icedtea-web-1.2-r7.ebuild: ~ia64(default/linux/ia64/10.0/desktop) ['>=net-misc/npapi-sdk-0.27'] dev-java/icedtea-web/icedtea-web-1.2-r7.ebuild: ~ia64(default/linux/ia64/10.0) ['>=net-misc/npapi-sdk-0.27'] upstream.workaround 5
Easy enough -- done. Please confirm that there are no issues with the headers on ia64 arches. Also FYI, due to an upstream API change it will probably be necessary to require the deps to be =net-misc/npapi-sdk-0.27
...actually never mind about the npapi-sdk version; apparently the code base has a configure check which can detect which version is being included.