Raphael Hertzog schrieb: > On Wed, 18 Mar 2009, Loïc Minier wrote: >> If you implement conditional behavior in your rules, typically based on >> lsb_release -is output: >> if vendor is Ubuntu: >> foo >> elif vendor is Debian: >> bar >> you face a problem when you meet: >> else: >> >> What behavior should one use here? > > Debian should always be the "else" because it's the default case. It > ensures that the lack of DEB_VENDOR results in correct package and > also that any unknown derivatives get the Debian behaviour. > > Of course an Ubuntu derivative could be surprised if they get > a Debian-variant of a package instead of an Ubuntu-variant… this explains > your other remark: > >> Instead, I think it would be nice if we could express some inheritance >> concept so that you can have conditional behavior in rules based on >> either "this distribution and its derivatives" or "only for this exact >> distribution" and logical combinations such as "derivatives of Foo >> except derivatives of Bar". > > I see how we can solve it (add new fields in /etc/dpkg/origins/* to > describe parent relationship, and create a new tool to query those > meta-information) but I wonder what impact you expect it would have > on the decision of exporting DEB_VENDOR in the build environment. > > Would you like a DEB_VENDORS="Gobuntu Ubuntu Debian" or similar > so that no external tool is required ? > > ifneq (,$(filter Ubuntu,$(DEB_VENDORS))) > # Ubuntu or derivative > endif
what about a command is_derivative <DEB_VENDOR> which could be used instead? This wouldn't hard-code any specific vendor names. -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
