Yes, I am well aware of bug #167899 and it seems nothing has changed, whereas a simple change or two would probably fix the issue and make USE=savedconfig a lot more intuitive to use. Currently you either need to know a package internally to extract the config file and store it beforehand, edit it and then call `USE=savedconfig emerge <pkg>', or you emerge it once with USE=-savedconfig, then once more to get the edited config in. A simple change makes sure that 1) the build doesn't needlessly die, and that 2) the USE flag needs can be set once, and for all. If I first choose to use USE=savedconfig, then I expect the package to merge even if a stored config isn't found, for the simple reason that the config you provide should replace a config in the package's build system. As far as I can tell, all savedconfig.eclass users work that way and only die() in savedconfig prevents this from working more intuitively. Index: profiles/use.desc =================================================================== RCS file: /var/cvsroot/gentoo-x86/profiles/use.desc,v retrieving revision 1.427 diff -u -B -r1.427 use.desc --- profiles/use.desc 17 Oct 2009 07:42:08 -0000 1.427 +++ profiles/use.desc 10 Nov 2009 22:16:26 -0000 @@ -306,7 +306,7 @@ samba - Adds support for SAMBA (Windows File and Printer sharing) sapdb - Adds support for SAP DB sasl - Adds support for the Simple Authentication and Security Layer -savedconfig - Use this to restore your config from /etc/portage/savedconfig ${CATEGORY}/${PN}. Make sure your USE flags allow for appropriate dependencies +savedconfig - Save and/or restore your config from /etc/portage/savedconfig/${CATEGORY}/${PN}. Make sure your USE flags allow for appropriate dependencies scanner - Adds support for scanner hardware (e.g. build the sane frontend in kdegraphics) sdl - Adds support for Simple Direct Layer (media library) seamonkey - Adds support for the Seamonkey web-browser Index: eclass/savedconfig.eclass =================================================================== RCS file: /var/cvsroot/gentoo-x86/eclass/savedconfig.eclass,v retrieving revision 1.12 diff -u -B -r1.12 savedconfig.eclass --- eclass/savedconfig.eclass 30 Oct 2009 16:46:41 -0000 1.12 +++ eclass/savedconfig.eclass 10 Nov 2009 22:16:26 -0000 @@ -119,8 +119,9 @@ eerror "Unable to read ${base} -- perms are screwed ?" die "fix your system" fi - eerror "No saved config to restore - please remove USE=savedconfig or" - eerror "provide a configuration file in ${PORTAGE_CONFIGROOT}/etc/portage/savedconfig/${CATEGORY}/${PN}" - die "config file needed when USE=savedconfig is specified" + elog "No saved config to restore was found. The file will be saved at" + elog "the end of this build and restored during the next run." + elog "After this build, you can prepare this file for the next build:" + elog "${PORTAGE_CONFIGROOT}/etc/portage/savedconfig/${CATEGORY}/${PN}" fi }
i think we would gate it on a has_version check -- if the package isn't installed yet, we won't die, but otherwise we will. always not dying isn't acceptable (per bug 167899 you referenced).
