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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
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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014, 2015 Eric Bavier <bavier@member.fsf.org>
;;; Copyright © 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2014 Ian Denhardt <ian@zenhack.net>
;;; Copyright © 2016 Andreas Enge <andreas@enge.fr>
;;;
;;; 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/>.

(define-module (gnu packages mpi)
  #:use-module (guix packages)
  #:use-module ((guix licenses)
                #:hide (expat))
  #:use-module (guix download)
  #:use-module (guix utils)
  #:use-module (guix build-system gnu)
  #:use-module (gnu packages)
  #:use-module (gnu packages gcc)
  #:use-module (gnu packages linux)
  #:use-module (gnu packages pciutils)
  #:use-module (gnu packages xorg)
  #:use-module (gnu packages gtk)
  #:use-module (gnu packages xml)
  #:use-module (gnu packages perl)
  #:use-module (gnu packages ncurses)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages valgrind))

(define-public hwloc
  (package
    (name "hwloc")
    (version "1.11.2")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://www.open-mpi.org/software/hwloc/v"
                                  (version-major+minor version)
                                  "/downloads/hwloc-" version ".tar.bz2"))
              (sha256
               (base32
                "1y7c3ysiin0rw0sj6dbxkvjg92j4by36rykvf0vmh91q2rmrn0lc"))))
    (build-system gnu-build-system)
    (inputs
     `(("libx11" ,libx11)
       ("cairo" ,cairo)
       ("ncurses" ,ncurses)
       ("expat" ,expat)
       ,@(if (not (string-prefix? "armhf"
                                  (or (%current-target-system)
                                      (%current-system))))
             `(("numactl" ,numactl))
             '())))
    (propagated-inputs
     ;; hwloc.pc lists it in 'Requires.private'.
     `(("libpciaccess" ,libpciaccess)))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (add-after
          'install 'refine-libnuma
          ;; Give -L arguments for libraries to avoid propagation
          (lambda* (#:key inputs outputs #:allow-other-keys)
            (let ((out  (assoc-ref outputs "out"))
                  (numa (assoc-ref inputs "numactl")))
              (substitute* (map (lambda (f) (string-append out "/" f))
                                '("lib/pkgconfig/hwloc.pc" "lib/libhwloc.la"))
                (("-lnuma" lib)
                 (string-append "-L" numa "/lib " lib)))))))))
    (home-page "https://www.open-mpi.org/projects/hwloc/")
    (synopsis "Abstraction of hardware architectures")
    (description
     "hwloc provides a portable abstraction (across OS,
versions, architectures, ...) of the hierarchical topology of modern
architectures, including NUMA memory nodes, sockets, shared caches, cores and
simultaneous multithreading.  It also gathers various attributes such as cache
and memory information.  It primarily aims at helping high-performance
computing applications with gathering information about the hardware so as to
exploit it accordingly and efficiently.

hwloc may display the topology in multiple convenient formats.  It also offers
a powerful programming interface to gather information about the hardware,
bind processes, and much more.")
    (license bsd-3)))

(define-public openmpi
  (package
    (name "openmpi")
    (version "1.10.3")
    (source
     (origin
      (method url-fetch)
      (uri (string-append "https://www.open-mpi.org/software/ompi/v"
                          (version-major+minor version)
                          "/downloads/openmpi-" version ".tar.bz2"))
      (sha256
       (base32
        "0k95ri9f8kzx5vhzrdbzn59rn2324fs4a96w5v8jy20j8dkbp13l"))))
    (build-system gnu-build-system)
    (inputs
     `(("hwloc" ,hwloc)
       ("gfortran" ,gfortran)
       ("valgrind" ,valgrind)))
    (native-inputs
     `(("pkg-config" ,pkg-config)
       ("perl" ,perl)))
    (arguments
     `(#:configure-flags `("--enable-static"

                           "--enable-mpi-thread-multiple"
                           "--enable-builtin-atomics"

                           "--enable-mpi-ext=all"
                           "--with-devel-headers"
                           "--enable-memchecker"
                           ,(string-append "--with-valgrind="
                                           (assoc-ref %build-inputs "valgrind"))
                           ,(string-append "--with-hwloc="
                                           (assoc-ref %build-inputs "hwloc")))
       #:phases (modify-phases %standard-phases
                  (add-before 'build 'scrub-timestamps ;reproducibility
                    (lambda _
                      (substitute* '("ompi/tools/ompi_info/param.c"
                                     "orte/tools/orte-info/param.c"
                                     "oshmem/tools/oshmem_info/param.c")
                        ((".*(Built|Configured) on.*") ""))
                      #t))
                  (add-after 'install 'remove-logs ;reproducibility
                    (lambda* (#:key outputs #:allow-other-keys)
                      (let ((out (assoc-ref outputs "out")))
                        (for-each delete-file (find-files out "config.log"))
                        #t))))))
    (home-page "http://www.open-mpi.org")
    (synopsis "MPI-2 implementation")
    (description
     "The Open MPI Project is an MPI-2 implementation that is developed and
maintained by a consortium of academic, research, and industry partners.  Open
MPI is therefore able to combine the expertise, technologies, and resources
from all across the High Performance Computing community in order to build the
best MPI library available.  Open MPI offers advantages for system and
software vendors, application developers and computer science researchers.")
    ;; See file://LICENSE
    (license bsd-2)))