Sometimes, a package needs to add configuration lines for devfsd. For example when adding modem support. Currently, on Gentoo, this must be done by editing /etc/devfsd.d, which is inconvenient and brittle (and makes unmerging especially difficult). If instead /etc/devfsd.conf contained a line: INCLUDE /etc/devfs.d then packages could simply add configuration files to directory /etc/devfs.d in just the same way that this is done, say, for /etc/modules.d PS: this problem came up when I was preparing the ltmodem ebuild
Its already done on CVS ...