[Trisquel-devel] Moving to sbuild

[Santiago Rodríguez]

Hi

I'm not sure about how sbuild will fit our current workflow regarding
package-helpers repository. We use  `dpkg-buildpackage` for building our
own packages, so no .dsc files at first stages.

In the current setup, we have folder shared between the host system and the
chroot, configured in the .pbuilderrc:

https://devel.trisquel.info/trisquel/trisquel-builder/blob/master/pbuilderrc#L149

Can we achieve something like this with sbuild?

Also, it would be nice if you added your findings/workflows regarding how
to use sbuild to a merge request in the
https://devel.trisquel.info/trisquel/trisquel-builder repository , so
others can learn and build on top of that.


/santi




On Sat, May 12, 2018 at 10:22 PM, Rubén Rodríguez <ruben at trisquel.info>
wrote:

>
> As mentioned in the last development meeting, I have been exploring the
> idea of replacing pbuild with sbuild in our CI system, because:
>  * sbuild uses plain chroots that are stored uncompressed, so spinning
> up a sbuild instance is instant and makes very little IO.
>  * sbuild uses cow on shm if there is enough memory, which speeds up
> things significantly, and remove the need to use hacks like eatmydata.
>  * The setup and usage is simpler, I was able to build trisquel packages
> on it without any change from default configs and setup.
>  * chroots are kept updated automatically
>
> The way I have tested it is with the attached script, which creates the
> necessary chroots in /var/lib/schroot/chroots. Sbuild provides a command
> that does this in one go, but it would need some changes to support
> Trisquel, so I wrote that simple script in the meantime.
>
> After running it, these are the main commands:
>
>  # list chroots
>  schroot -l
>  # start a shell on a chroot
>  sbuild-shell flidas-amd64
>  # build a package
>  sbuild -d flidas /path/package_1.0.dsc --arch=i386
>
> The last command will build the package and copy the result files in the
> same path where the dsc and tarballs were. There are parameters to set
> gpg signing, number of parallel jobs, logging, and many others.
>
>
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>
>
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