Re: [GSoC] Rewrite Hydra to be more integrated with Guix.

[Alex Kost]

Mathieu Lirzin (2016-03-18 00:38 +0300) wrote:

> Hello fellow Guix Hackers,
>
> Being currently a student which is due to make an internship, I intend
> to turn this boring administrative injunction into an opportunity to
> contribute to Guix by applying to Google Summer of Code which is
> considered as an internship by University of Bordeaux standards.
>
> Hydra is a Nix-based continuous build system which is used by Guix to
> compile packages on different platforms and to distribute packages
> substitutes.  With time, nix-daemon and guix-daemon are evolving
> differently.  Hydra being heavily dependent on nix-daemon, Guix is not
> able to use its newest versions.  Moreover there are some software
> related performance issues (among others) in the current Guix
> infrastructure that are unlikely to be solved considering the
> foreignness of Hydra Perl implementation to Guix hackers.
>
> In that context, I am willing to work on implementing a continous build
> system similar to Hydra in Guile.

Aaaah!  It would be really great!  Thank you so much for beginning this
project!

> This GSoC will not likely succeed in implementing every features Hydra
> is currently providing.  The objective is rather to create the basis
> which will then allow further developpements to overcomes the present
> difficulties.  To achieve this the following milestones (suggested by
> Ludo) will be followed:
>
> - Implementing a simple loop pulling Guix Git repository and building
>   every packages.
>
> - Adding a “job” abstraction to be able to build different Git branches.
>
> - Adding support for a database to keep track of the build results with
>   their associated commit, derivation and output.
>
> - Adding a API over HTTP to get the build results remotely (ideally
>   through an Emacs interface).

I dream of a more feature-full API, as the current "M-x guix-hydra-…"
stuff is not very useful.

-- 
Alex