[Rpm-ecosystem] Feaders rewritten in Rust using Libhif

[Pavel Odvody]

On Thu, 2016-04-21 at 10:04 -0400, Colin Walters wrote:
> On Wed, Apr 20, 2016, at 06:02 AM, Pavel Odvody wrote:
> > 
> > 
> > That is on my radar, but from experience, people tend to #include
> > *much* more than they put into CMakeList.txt or configure.ac --
> > even
> > libhif itself doesn't list librepo, 
> FIND_LIBRARY(REPO_LIBRARY repo REQUIRED)
> 
> > 
> > GObject, 
> PKG_CHECK_MODULES(GLIB gio-unix-2.0>=2.44.0 REQUIRED)
> 
> (gobject and glib are transitive dependencies from gio-unix-2.0)
> 
> > 
> > GObjectIntrospection
> That's true, but we're not using it as a C library, but rather via
> /usr/bin/g-ir-scanner.
> 

My bad, the missing piece is that current libhif master requires GLIB
>= 2.44.6 because of `g_autoptr(GString)` (so you need at least F23).

> > 
> > others in CMakeList.txt (or there's no version checks) and you just
> > need to jump back and forth to figure out what is actually needed
> > when
> > you're working with some minimal build environment like Docker base
> > image.
> If I was spending time on this, I would patch build systems like
> autotools
> and cmake to, when failing to find a pkg-config file, detect the
> distribution
> and automatically spit out a compatible package name.
> 
> The other thing of course is to look at .spec files and such
> upstream,
> and in this case since libhif is already packaged, `yum-builddep
> libhif`.

Yeah, but then there's still tons of C code being compiled on the go
every day as part of pip install, gem install etc. and these usually
don't even have a Makefile.

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-- 
Pavel Odvody <podvody at redhat.com>
Sr. Software Engineer - EMEA ENG Developer Experience
5EC1 95C1 8E08 5BD9 9BBF 9241 3AFA 3A66 024F F68D
Red Hat Czech s.r.o., Purkyňova 99/71, 612 45, Brno

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