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-*- mode: org; coding: utf-8; -*-

#+TITLE: Tentative GNU Guix Road Map

Copyright © 2012, 2013, 2014, 2015 Ludovic Courtès <ludo@gnu.org>

  Copying and distribution of this file, with or without modification,
  are permitted in any medium without royalty provided the copyright
  notice and this notice are preserved.

The goals of the GNU Guix project are two-fold:

  - to build a purely functional package manager, based on Nix and
    Guile;

  - to use it to build a practical 100% free software distribution of
    GNU/Linux and possibly other GNU variants, with a focus on the
    promotion and tight integration of GNU components–the GNU system.

Since its inception, the project has gone a long way towards that goal.  Below
is a list of items we want for version "1.0" of the Guix System Distribution.
There will be a few 0.x releases by then to give the new features more
exposure and testing.

You're welcome to discuss this road map on guix-devel@gnu.org or #guix on
the Libera Chat IRC network!

* Features scheduled for 1.0

  - larger & more robust build farm
    + we need a powerful, dedicated front-end
    + armhf-linux build machine
    + leave Hydra in favor of 'guix publish' + custom code?
  - more OS features
    + LVM support
    + encrypted root
    + configurable name service switch
    + whole-system unit tests, using VMs
  - more service definitions
    + mcron, postfix(?), wicd(?), etc.
  - better 'guix system'
    + 'reconfigure' should be able to restart non-essential services
    + support for '--list-generations' and '--delete-generations'
  - better 'guix pull'
    + using Git to fetch the source instead of re-downloading everything
    + build more quickly
    + install new .mo files and new manual
    + authentication of the Guix source: use signed commits?
  - simplified, purely declarative service list in 'operating-system'
    + it should be possible to inspect the service instance declarations and
      settings
  - GUIs
    + integrate guix-web?
    + guile-ncurses installer?
  - 'guix publish'?

* Features for later

  - complete GNU/Hurd port
  - use content-based addressing when downloading substitutes to reduce
    bandwidth requirements
    + design nar v2 format where file contents are replaced by their hashes
    + leverage /gnu/store/.links
  - binary origin tracking
    + keep signatures in sqlite.db
    + preserve signatures upon import/export
  - peer-to-peer distribution of updates (GNUnet?)
  - more deterministic builds
    + identify & fix sources of non-determinism in builds
    + strengthen guix-daemon containers to further increase reproducibility
    + trusting-trust: bootstrap with different tool chains
    + fixed-point: re-bootstrap until fixed point is reached
    + distributed validation: compare contents of store items with others
      * resist a hydra.gnu.org compromise
  - reproducible containers: mix of 'guix environment' and 'guix system vm'
  - execute code with least privilege
    + build containers like guix-daemon does
    + provide a Plash-like interface in Bash
  - daemon rewritten in Guile
  - more shepherd integration
    + monitor network interfaces and start/stop events based on that
    + include a DHCP client written in Scheme

generated by cgit

/* GNU Guix --- Functional package management for GNU
   Copyright (C) 2012  Ludovic Courtès <ludo@gnu.org>

   This file is part of GNU Guix.

   GNU Guix is free software; you can redistribute it and/or modify it
   under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or (at
   your option) any later version.

   GNU Guix is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.  */

/* Release file to build Guix with Nix.  Useful to bootstrap Guix on
   Guix-enabled Hydra instances.  */

let
  nixpkgs = <nixpkgs>;

  buildOutOfSourceTree = true;
  succeedOnFailure = true;
  keepBuildDirectory = true;

  # The Guile used to bootstrap the whole thing.  It's normally
  # downloaded by the build system, but here we download it via a
  # fixed-output derivation and stuff it into the build tree.
  bootstrap_guile =
    let pkgs = import nixpkgs {}; in {
      i686 = pkgs.fetchurl {
        url = http://www.fdn.fr/~lcourtes/software/guix/packages/i686-linux/20121219/guile-2.0.7.tar.xz;
        sha256 = "45d1f9bfb9e4531a8f1c5a105f7ab094cd481b8a179ccc63cbabb73ce6b8437f";
      };

      x86_64 = pkgs.fetchurl {
        url = http://www.fdn.fr/~lcourtes/software/guix/packages/x86_64-linux/20121219/guile-2.0.7.tar.xz;
        sha256 = "953fbcc8db6e310626be79b67319cf4141dc23b296447952a99d95425b3a4dc1";
      };
    };

  jobs = {
    tarball =
      let pkgs = import nixpkgs {}; in
      pkgs.releaseTools.sourceTarball {
        name = "guix-tarball";
        src = <guix>;
        buildInputs = with pkgs; [ guile sqlite bzip2 git libgcrypt ];
        buildNativeInputs = with pkgs; [ texinfo gettext cvs pkgconfig ];
        preAutoconf = ''git config submodule.nix.url "${<nix>}"'';
        configureFlags =
          [ "--with-libgcrypt-prefix=${pkgs.libgcrypt}"
            "--localstatedir=/nix/var"
          ];
      };

    build =
      { system ? builtins.currentSystem }:

      let pkgs = import nixpkgs { inherit system; }; in
      pkgs.releaseTools.nixBuild {
        name = "guix";
        buildInputs = with pkgs; [ guile sqlite bzip2 libgcrypt ];
        buildNativeInputs = [ pkgs.pkgconfig ];
        src = jobs.tarball;
        configureFlags =
          [ "--with-libgcrypt-prefix=${pkgs.libgcrypt}"
            "--localstatedir=/nix/var"
          ];

        preBuild =
          # Use our pre-downloaded bootstrap tarballs instead of letting
          # the build system download it over and over again.
          '' mkdir -p distro/packages/bootstrap/{i686,x86_64}-linux
             cp -v "${bootstrap_guile.i686}" \
               distro/packages/bootstrap/i686-linux/guile-2.0.7.tar.xz
             cp -v "${bootstrap_guile.x86_64}" \
               distro/packages/bootstrap/x86_64-linux/guile-2.0.7.tar.xz
          '';

        inherit succeedOnFailure keepBuildDirectory
          buildOutOfSourceTree;
      };


    build_disable_daemon =
      { system ? builtins.currentSystem }:

      let
        pkgs = import nixpkgs { inherit system; };
        build = jobs.build { inherit system; };
      in
        pkgs.lib.overrideDerivation build ({ configureFlags, ... }: {
          configureFlags = configureFlags ++ [ "--disable-daemon" ];
          buildInputs = with pkgs; [ guile nixUnstable pkgconfig ];

          # Since we need to talk to a running daemon, we need to escape
          # the chroot.
          preConfigure = "export NIX_REMOTE=daemon";
          __noChroot = true;
        });

    # Jobs to test the distro.
    distro = {
      hello =
        { system ? builtins.currentSystem }:

        let
          pkgs = import nixpkgs { inherit system; };
          guix = jobs.build { inherit system; };
        in
          # XXX: We have no way to tell the Nix code to swallow the .drv
          # produced by `guix-build', so we have a pointless indirection
          # here.  This could be worked around by generating Nix code
          # from the .drv, and importing that.
          pkgs.releaseTools.nixBuild {
            src = null;
            name = "guix-hello";
            phases = "buildPhase";
            buildPhase = "${guix}/bin/guix-build --no-substitutes hello | tee $out";
            __noChroot = true;
          };
    };
  };
in
  jobs