Wookey writes ("Re: Bug#557730: /etc/{protocols,network,services} not schroot's
to scribble over"):
> On 2023-02-14 16:02 +0000, Ian Jackson wrote:
> > The fake netbase.deb could be contained within schroot.deb, in
> > /usr/share, so schroot wouldn't need to gain runtime build-deps on
> > dpkg tooling.
>
> Except that it has to build this package live in order to contain the
> /etc/protocols and /etc/services files from the host
> environment. Having these default files with standard contents in a
> pre-built .deb is pointless, isn't it?
No, I thinko it's fine. They mostly contain standardised constants.
schroot could build-depend on netbase and copy the files from there,
or just have fixed copies which would be updated manually once a
release or something.
These files, especially services, do change, but it is rare for
low-level basic things (or build systems) to actually depend on the
new entries.
> > > Whilst having the passwd database reflected in the chroot is
> > > incredibly useful it's not clear how often the services and protocols
> > > are needed, but I assume people do find that functionality useful.
> >
> > I had a package that failed its build-time tests due to lack of
> > /etc/protocols. The missing build-dep was detected in the buildds,
> > because my own local sid build chroot has netbase installed, precisely
> > because of this bug.
>
> Right, which gets back to having a proper minimal environment used by
> sbuild to do a clean build. I have that (and it doesn't mount home,
> using the 'sbuild' profile). I use it once things are working
> reasonably well to get at least one clean build before uploading. This
> bug is a problem in the 'less clean, but more useful' 'default' chroot
> environment which is best for diagnostic work and builds of various
> sorts where some file persistence (of user files) is needed.
IME having a somewhat-dirty build environment is both convenient and
not a problem.
For example, my own sid chroot which *does* mount /home and import my
passwd and so on, reproducibily-builds the same .debs as the buildds
even for src:xen, whose build system is hardly straightforward.
Ian.
--
Ian Jackson <ijack...@chiark.greenend.org.uk> These opinions are my own.
Pronouns: they/he. If I emailed you from @fyvzl.net or @evade.org.uk,
that is a private address which bypasses my fierce spamfilter.
