On Mon, 16 Apr 2018 15:01:33 +0200, Jaroslav Kysela wrote: > > Dne 10.4.2018 v 09:16 Takashi Iwai napsal(a): > > On Wed, 04 Apr 2018 10:12:50 +0200, > > Jaroslav Kysela wrote: > >> > >> Hi, > >> > >> I pushed two commits to the alsa-lib package which changes the > >> default location for the add-on config files to /etc/alsa/conf.d from > >> /usr/share/alsa/alsa.conf.d . The reason is to follow the scheme like in > >> other packages. Also, the users might want to change or disable contents > >> in those 'default' files. > >> > >> Example paths from other packages: > >> > >> # find /etc -type d -name conf.d > >> /etc/fonts/conf.d > >> /etc/NetworkManager/conf.d > >> /etc/libblockdev/conf.d > >> /etc/sssd/conf.d > >> /etc/httpd/conf.d > > > > How about evaluating both paths, with preference of /etc over > > /usr/share? The change to allow only /etc would break the existing > > alsa-plugins packaging, for example, which still may put the config to > > /usr/share/alsa/conf.d. > > > > In general, /usr/share is the place for global setups while /etc for > > local machines. So it's more natural to put the package default setup > > to /usr/share while allowing overriding it via /etc. You can imagine > > /usr/share is shared via NFS. If anything different is necessary, you > > put it in /etc. > > >From the packager perspective, it makes more sense to have only > /etc/alsa/conf.d in the global alsa.conf and make symlinks to /usr/share > like fontconfig does (/etc/fonts/conf.d). The users will modify only > /etc contents as they should for the non-standard configurations. This > variant also looks to me more straight for users. Opinions? Well, I'm not sure. First of all, is this kind of config style (symlinking from /usr/share to /etc) generic? I don't know of anything else than fontconfig. And, the case of fontconfig looks is somehow hackish: it prepares the available configs in /usr/share/fontconfig/conf.avail/*, and symlinking to a differently named directory, /etc/fonts/conf.d/*. I think other cases are classified to a few different types: - systemd-style: there are two directories, /usr/share/foo/xxx.d/ and /etc/foo/xxx.d/. Read from both directories, but /etc is preferred. i.e. if a same file name is present in both /etc and /usr/share, the former is taken and the latter is ignored. - both /usr/share and /etc directories are evaluated, often in the order of /etc preference, but no conflict check like systemd. - only either /etc or /usr/share Basically fontconfig belongs to the last type but with some symlink hacks. Honestly speaking, I never understand why they took such an approach... Actually, I'm not objecting to addition of /etc. But, as already mentioned, a slight concern is the case where another package (e.g. alsa-plugins-xyz) adds /usr/share/alsa/conf.d/*.conf. With the current proposal, we'll silently break. And the situation won't change if we follow the fontconfig pattern. thanks, Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
