guix-devel/distro/base.scm

;;; Guix --- Nix package management from Guile.         -*- coding: utf-8 -*-
;;; Copyright (C) 2012 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of Guix.
;;;
;;; 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.
;;;
;;; 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 Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (distro base)
  #:use-module (guix packages)
  #:use-module (guix http)
  #:use-module (guix build-system gnu)
  #:use-module (guix utils))

;;; Commentary:
;;;
;;; A Guix-based distribution.
;;;
;;; Code:

(define-public libsigsegv
  (package
   (name "libsigsegv")
   (version "2.10")
   (source (origin
            (method http-fetch)
            (uri (string-append
                  "http://ftp.gnu.org/gnu/libsigsegv/libsigsegv-"
                  version ".tar.gz"))
            (sha256
             (base32 "16hrs8k3nmc7a8jam5j1fpspd6sdpkamskvsdpcw6m29vnis8q44"))))
   (build-system gnu-build-system)
   (outputs '("out" "lib"))                   ; separate libdir from the rest
   (home-page "http://www.gnu.org/software/libsigsegv/")
   (description "GNU libsigsegv, a library to handle page faults in user mode")
   (long-description
"GNU libsigsegv is a library for handling page faults in user mode. A page
fault occurs when a program tries to access to a region of memory that is
currently not available. Catching and handling a page fault is a useful
technique for implementing pageable virtual memory, memory-mapped access to
persistent databases, generational garbage collectors, stack overflow
handlers, distributed shared memory, and more.")
   (license "GPLv2+")))

(define-public gawk
  (package
   (name "gawk")
   (version "4.0.0")
   (source (origin
            (method http-fetch)
            (uri (string-append "http://ftp.gnu.org/gnu/gawk/gawk-" version
                                ".tar.bz2"))
            (sha256
             (base32 "0sss7rhpvizi2a88h6giv0i7w5h07s2fxkw3s6n1hqvcnhrfgbb0"))))
   (build-system gnu-build-system)
   (arguments (case-lambda
                ((system)
                 (if (string=? system "i686-cygwin")
                     '(#:tests? #f)      ; work around test failure on Cygwin
                     '(#:parallel-tests? #f))) ; test suite fails in parallel
                ((system cross-system)
                 '(#:parallel-tests? #f))))
   (inputs `(("libsigsegv" ,libsigsegv)             ; headers
             ("libsigsegv/lib" ,libsigsegv "lib"))) ; library
   (home-page "http://www.gnu.org/software/gawk/")
   (description "GNU implementation of the Awk programming language")
   (long-description
    "Many computer users need to manipulate text files: extract and then
operate on data from parts of certain lines while discarding the rest, make
changes in various text files wherever certain patterns appear, and so on.
To write a program to do these things in a language such as C or Pascal is a
time-consuming inconvenience that may take many lines of code.  The job is
easy with awk, especially the GNU implementation: Gawk.

The awk utility interprets a special-purpose programming language that makes
it possible to handle many data-reformatting jobs with just a few lines of
code.")
   (license "GPLv3+")))

(define-public hello
  (package
   (name "hello")
   (version "2.8")
   (source (origin
            (method http-fetch)
            (uri (string-append "http://ftp.gnu.org/gnu/hello/hello-" version
                                ".tar.gz"))
            (sha256
             (base32 "0wqd8sjmxfskrflaxywc7gqw7sfawrfvdxd9skxawzfgyy0pzdz6"))))
   (build-system gnu-build-system)
   (arguments '(#:configure-flags
                `("--disable-dependency-tracking"
                  ,(string-append "--with-gawk="  ; for illustration purposes
                                 (assoc-ref %build-inputs "gawk")))))
   (inputs `(("gawk" ,gawk)))
   (description "GNU Hello")
   (long-description "Yeah...")
   (home-page "http://www.gnu.org/software/hello/")
   (license "GPLv3+")))

(define-public m4
  (package
   (name "m4")
   (version "1.4.16")
   (source (origin
            (method http-fetch)
            (uri (string-append "http://ftp.gnu.org/gnu/m4/m4-"
                                version ".tar.bz2"))
            (sha256
             (base32
              "035r7ma272j2cwni2961jp22k6bn3n9xwn3b3qbcn2yrvlghql22"))))
   (build-system gnu-build-system)
   (arguments (case-lambda
                ((system)
                 ;; XXX: Disable tests on those platforms with know issues.
                 `(#:tests? ,(not (member system
                                          '("x86_64-darwin"
                                            "i686-cygwin"
                                            "i686-sunos")))
                   #:patches (list (assoc-ref %build-inputs "patch/s_isdir")
                                   (assoc-ref %build-inputs
                                              "patch/readlink-EINVAL"))))
                ((system cross-system)
                 `(#:patches (list (assoc-ref %build-inputs "patch/s_isdir")
                                   (assoc-ref %build-inputs
                                              "patch/readlink-EINVAL"))))))
   (inputs `(("patch/s_isdir"
              ,(search-path %load-path "distro/m4-s_isdir.patch"))
             ("patch/readlink-EINVAL"
              ,(search-path %load-path "distro/m4-readlink-EINVAL.patch"))))
   (description "GNU M4, a macro processor")
   (long-description
    "GNU M4 is an implementation of the traditional Unix macro processor.  It
is mostly SVR4 compatible although it has some extensions (for example,
handling more than 9 positional parameters to macros).  GNU M4 also has
built-in functions for including files, running shell commands, doing
arithmetic, etc.

GNU M4 is a macro processor in the sense that it copies its input to the
output expanding macros as it goes.  Macros are either builtin or
user-defined and can take any number of arguments.  Besides just doing macro
expansion, m4 has builtin functions for including named files, running UNIX
commands, doing integer arithmetic, manipulating text in various ways,
recursion etc...  m4 can be used either as a front-end to a compiler or as a
macro processor in its own right.")
   (license "GPLv3+")
   (home-page "http://www.gnu.org/software/m4/")))

(define-public gmp
  (package
   (name "gmp")
   (version "5.0.5")
   (source (origin
            (method http-fetch)
            (uri (string-append "http://ftp.gnu.org/gnu/gmp-" version
                                ".tar.bz2"))
            (sha256
             (base32
              "1jfymbr90mpn0zw5sg001llqnvf2462y77vgjknrmfs1rjn8ln0z"))))
   (build-system gnu-build-system)
   (native-inputs `(("m4" ,m4)))
   (arguments `(#:configure-flags
                '(;; Build a "fat binary", with routines for several
                  ;; sub-architectures.
                  "--enable-fat"
                  "--enable-cxx")))
   (description "GMP, the GNU multiple precision arithmetic library")
   (long-description
    "GMP is a free library for arbitrary precision arithmetic, operating on
signed integers, rational numbers, and floating point numbers.  There is no
practical limit to the precision except the ones implied by the available
memory in the machine GMP runs on.  GMP has a rich set of functions, and the
functions have a regular interface.

The main target applications for GMP are cryptography applications and
research, Internet security applications, algebra systems, computational
algebra research, etc.

GMP is carefully designed to be as fast as possible, both for small operands
and for huge operands.  The speed is achieved by using fullwords as the basic
arithmetic type, by using fast algorithms, with highly optimised assembly
code for the most common inner loops for a lot of CPUs, and by a general
emphasis on speed.

GMP is faster than any other bignum library.  The advantage for GMP increases
with the operand sizes for many operations, since GMP uses asymptotically
faster algorithms.")
   (license "LGPLv3+")
   (home-page "http://gmplib.org/")))

(define-public ncurses
  (let ((post-install-phase
         '(lambda* (#:key outputs #:allow-other-keys)
            (let ((out (assoc-ref outputs "out")))
              ;; When building a wide-character (Unicode) build, create backward
              ;; compatibility links from the the "normal" libraries to the
              ;; wide-character libraries (e.g. libncurses.so to libncursesw.so).
              (with-directory-excursion (string-append out "/lib")
                (for-each (lambda (lib)
                            (define libw.a
                              (string-append "lib" lib "w.a"))
                            (define lib.a
                              (string-append "lib" lib ".a"))
                            (define libw.so.x
                              (string-append "lib" lib "w.so.5"))
                            (define lib.so.x
                              (string-append "lib" lib ".so.5"))
                            (define lib.so
                              (string-append "lib" lib ".so"))

                            (when (file-exists? libw.a)
                              (format #t "creating symlinks for `lib~a'~%" lib)
                              (symlink libw.a lib.a)
                              (symlink libw.so.x lib.so.x)
                              (false-if-exception (delete-file lib.so))
                              (call-with-output-file lib.so
                                (lambda (p)
                                  (format p "INPUT (-l~aw)~%" lib)))))
                          '("curses" "ncurses" "form" "panel" "menu")))))))
    (package
     (name "ncurses")
     (version "5.9")
     (source (origin
              (method http-fetch)
              (uri (string-append "http://ftp.gnu.org/gnu/ncurses/ncurses-"
                                  version ".tar.gz"))
              (sha256
               (base32
                "0fsn7xis81za62afan0vvm38bvgzg5wfmv1m86flqcj0nj7jjilh"))))
     (build-system gnu-build-system)
     (arguments
      (case-lambda
        ((system)
         `(#:configure-flags
           `("--with-shared" "--without-debug" "--enable-widec"

             ;; By default headers land in an `ncursesw' subdir, which is not
             ;; what users expect.
             ,(string-append "--includedir=" (assoc-ref %outputs "out")
                             "/include")

             ;; C++ bindings fail to build on
             ;; `i386-pc-solaris2.11' with GCC 3.4.3:
             ;; <http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=6395191>.
             ,,@(if (string=? system "i686-solaris")
                    '("--without-cxx-binding")
                    '()))
           #:tests? #f                            ; no "check" target
           #:phases (alist-cons-after 'install 'post-install
                                      ,post-install-phase
                                      %standard-phases)))
        ((system cross-system)
         (arguments cross-system))))
     (self-native-input? #t)
     (description
      "GNU Ncurses, a free software emulation of curses in SVR4 and more")
     (long-description
      "The Ncurses (new curses) library is a free software emulation of curses
in System V Release 4.0, and more.  It uses Terminfo format, supports pads
and color and multiple highlights and forms characters and function-key
mapping, and has all the other SYSV-curses enhancements over BSD Curses.

The ncurses code was developed under GNU/Linux.  It has been in use for some
time with OpenBSD as the system curses library, and on FreeBSD and NetBSD as
an external package.  It should port easily to any ANSI/POSIX-conforming
UNIX.  It has even been ported to OS/2 Warp!")
     (license "X11")
     (home-page "http://www.gnu.org/software/ncurses/"))))

(define-public readline
  (package
   (name "readline")
   (version "6.2")
   (source (origin
            (method http-fetch)
            (uri (string-append "http://ftp.gnu.org/gnu/readline/readline-"
                                version ".tar.gz"))
            (sha256
             (base32
              "10ckm2bd2rkxhvdmj7nmbsylmihw0abwcsnxf8y27305183rd9kr"))))
   (build-system gnu-build-system)
   (propagated-inputs `(("ncurses" ,ncurses)))
   (inputs `(("patch/link-ncurses"
              ,(search-path %load-path
                            "distro/readline-link-ncurses.patch"))))
   (arguments `(#:patches (list (assoc-ref %build-inputs
                                           "patch/link-ncurses"))
                #:patch-flags '("-p0")))
   (description "GNU Readline, a library for interactive line editing")
   (long-description
    "The GNU Readline library provides a set of functions for use by
applications that allow users to edit command lines as they are typed in.
Both Emacs and vi editing modes are available.  The Readline library includes
additional functions to maintain a list of previously-entered command lines,
to recall and perhaps reedit those lines, and perform csh-like history
expansion on previous commands.

The history facilites are also placed into a separate library, the History
library, as part of the build process.  The History library may be used
without Readline in applications which desire its capabilities.")
   (license "GPLv3+")
   (home-page "http://savannah.gnu.org/projects/readline/")))

(define-public libtool
  (package
   (name "libtool")
   (version "2.4.2")
   (source (origin
            (method http-fetch)
            (uri (string-append "http://ftp.gnu.org/gnu/libtool/libtool-"
                                version ".tar.gz"))
            (sha256
             (base32
              "0649qfpzkswgcj9vqkkr9rn4nlcx80faxpyqscy2k1x9c94f93dk"))))
   (build-system gnu-build-system)
   (native-inputs `(("m4" ,m4)
                    ("perl" ,(nixpkgs-derivation* "perl"))))
   (description "GNU Libtool, a generic library support script")
   (long-description
    "GNU libtool is a generic library support script.  Libtool hides the
complexity of using shared libraries behind a consistent, portable interface.

To use libtool, add the new generic library building commands to your
Makefile, Makefile.in, or Makefile.am.  See the documentation for
details.")
   (license "GPLv3+")
   (home-page "http://www.gnu.org/software/libtool/")))

(define-public libunistring
  (package
   (name "libunistring")
   (version "0.9.3")
   (source (origin
            (method http-fetch)
            (uri (string-append
                  "http://ftp.gnu.org/gnu/libunistring/libunistring-"
                  version ".tar.gz"))
            (sha256
             (base32
              "18q620269xzpw39dwvr9zpilnl2dkw5z5kz3mxaadnpv4k3kw3b1"))))
   (propagated-inputs '())                  ; FIXME: add libiconv when !glibc
   (build-system gnu-build-system)
   (description "GNU Libunistring, a Unicode string library")
   (long-description
    "This library provides functions for manipulating Unicode strings and for
manipulating C strings according to the Unicode standard.

GNU libunistring is for you if your application involves non-trivial text
processing, such as upper/lower case conversions, line breaking, operations
on words, or more advanced analysis of text.  Text provided by the user can,
in general, contain characters of all kinds of scripts.  The text processing
functions provided by this library handle all scripts and all languages.

libunistring is for you if your application already uses the ISO C / POSIX
<ctype.h>, <wctype.h> functions and the text it operates on is provided by
the user and can be in any language.

libunistring is also for you if your application uses Unicode strings as
internal in-memory representation.")
   (home-page "http://www.gnu.org/software/libunistring/")
   (license "LGPLv3+")))

(define-public recutils
  (package
   (name "recutils")
   (version "1.5")
   (source (origin
            (method http-fetch)
            (uri (string-append "http://ftp.gnu.org/gnu/recutils/recutils-"
                                version ".tar.gz"))
            (sha256
             (base32
              "1v2xzwwwhc5j5kmvg4sv6baxjpsfqh8ln7ilv4mgb1408rs7xmky"))))
   (build-system gnu-build-system)
   (inputs `(("curl" ,(nixpkgs-derivation* "curl"))
             ("emacs" ,(nixpkgs-derivation* "emacs"))
             ("check" ,(nixpkgs-derivation* "check"))
             ("bc" ,(nixpkgs-derivation* "bc"))))
   (description "GNU recutils, tools and libraries to access human-editable,
text-based databases")
   (long-description
    "GNU recutils is a set of tools and libraries to access human-editable,
text-based databases called recfiles.  The data is stored as a sequence of
records, each record containing an arbitrary number of named fields.")
   (license "GPLv3+")
   (home-page "http://www.gnu.org/software/recutils/")))

(define-public guile-1.8
  (package
   (name "guile")
   (version "1.8.8")
   (source (origin
            (method http-fetch)
            (uri (string-append "http://ftp.gnu.org/gnu/guile/guile-" version
                                ".tar.gz"))
            (sha256
             (base32
              "0l200a0v7h8bh0cwz6v7hc13ds39cgqsmfrks55b1rbj5vniyiy3"))))
   (build-system gnu-build-system)
   (arguments '(#:configure-flags '("--disable-error-on-warning")
                #:patches (list (assoc-ref %build-inputs "patch/snarf"))

                ;; Insert a phase before `configure' to patch things up.
                #:phases (alist-cons-before
                           'configure
                           'patch-loader-search-path
                           (lambda* (#:key outputs #:allow-other-keys)
                             ;; Add a call to `lt_dladdsearchdir' so that
                             ;; `libguile-readline.so' & co. are in the
                             ;; loader's search path.
                             (substitute* "libguile/dynl.c"
                                          (("lt_dlinit.*$" match)
                                           (format #f
                                                   "  ~a~%  lt_dladdsearchdir(\"~a/lib\");~%"
                                                   match
                                                   (assoc-ref outputs "out")))))
                           %standard-phases)))
   (inputs `(("patch/snarf"
              ,(search-path %load-path "distro/guile-1.8-cpp-4.5.patch"))
             ("gawk" ,gawk)
             ("readline" ,readline)))

   ;; Since `guile-1.8.pc' has "Libs: ... -lgmp -lltdl", these must be
   ;; propagated.
   (propagated-inputs `(("gmp" ,gmp)
                        ("libtool" ,libtool)))

   ;; When cross-compiling, a native version of Guile itself is needed.
   (self-native-input? #t)

   (description "GNU Guile 1.8, an embeddable Scheme interpreter")
   (long-description
"GNU Guile 1.8 is an interpreter for the Scheme programming language,
packaged as a library that can be embedded into programs to make them
extensible.  It supports many SRFIs.")
   (home-page "http://www.gnu.org/software/guile/")
   (license "LGPLv2+")))

(define-public libffi
  (let ((post-install-phase
         ;; Install headers in the right place.
         '(lambda* (#:key outputs #:allow-other-keys)
            (define out (assoc-ref outputs "out"))
            (mkdir (string-append out "/include"))
            (with-directory-excursion
                (string-append out "/lib/libffi-3.0.9/include")
              (for-each (lambda (h)
                          (format #t "moving `~a' to includedir~%" h)
                          (rename-file h (string-append out "/include/" h)))
                        (scandir "."
                                 (lambda (x)
                                   (not (member x '("." ".."))))))))))
   (package
    (name "libffi")
    (version "3.0.9")
    (source (origin
             (method http-fetch)
             (uri ;; FIXME: should be ftp://
              (string-append "http://sourceware.org/pub/libffi/"
                             name "-" version ".tar.gz"))
             (sha256
              (base32
               "0ln4jbpb6clcsdpb9niqk0frgx4k0xki96wiv067ig0q4cajb7aq"))))
    (build-system gnu-build-system)
    (arguments `(#:modules ((guix build utils) (guix build gnu-build-system)
                            (ice-9 ftw) (srfi srfi-26))
                 #:phases (alist-cons-after 'install 'post-install
                                            ,post-install-phase
                                            %standard-phases)))
    (description "libffi, a foreign function call interface library")
    (long-description
     "The libffi library provides a portable, high level programming interface
to various calling conventions.  This allows a programmer to call any
function specified by a call interface description at run-time.

FFI stands for Foreign Function Interface.  A foreign function interface is
the popular name for the interface that allows code written in one language
to call code written in another language.  The libffi library really only
provides the lowest, machine dependent layer of a fully featured foreign
function interface.  A layer must exist above libffi that handles type
conversions for values passed between the two languages.")
    (home-page "http://sources.redhat.com/libffi/")

    ;; See <http://github.com/atgreen/libffi/blob/master/LICENSE>.
    (license "free, non-copyleft"))))

(define-public guile-2.0
  (package
   (name "guile")
   (version "2.0.6")
   (source (origin
            (method http-fetch)
            (uri (string-append "http://ftp.gnu.org/gnu/guile/guile-" version
                                ".tar.xz"))
            (sha256
             (base32
              "000ng5qsq3cl1k35jvzvhwxj92wx4q87745n2fppkd4irh58vv5l"))))
   (build-system gnu-build-system)
   (native-inputs `(("xz" ,(nixpkgs-derivation* "xz"))
                    ("pkgconfig" ,(nixpkgs-derivation* "pkgconfig"))))
   (inputs `(("libffi" ,libffi)
             ("readline" ,readline)))

   (propagated-inputs
    `( ;; These ones aren't normally needed here, but since `libguile-2.0.la'
       ;; reads `-lltdl -lunistring', adding them here will add the needed
       ;; `-L' flags.  As for why the `.la' file lacks the `-L' flags, see
       ;; <http://thread.gmane.org/gmane.comp.lib.gnulib.bugs/18903>.
      ("libunistring" ,libunistring)
      ("libtool" ,libtool)

      ;; The headers and/or `guile-2.0.pc' refer to these packages, so they
      ;; must be propagated.
      ("bdw-gc" ,(nixpkgs-derivation* "boehmgc"))
      ("gmp" ,gmp)))

   (self-native-input? #t)

   (description "GNU Guile 2.0, an embeddable Scheme implementation")
   (long-description
"GNU Guile is an implementation of the Scheme programming language, with
support for many SRFIs, packaged for use in a wide variety of environments.
In addition to implementing the R5RS Scheme standard and a large subset of
R6RS, Guile includes a module system, full access to POSIX system calls,
networking support, multiple threads, dynamic linking, a foreign function
call interface, and powerful string processing.")
   (home-page "http://www.gnu.org/software/guile/")
   (license "LGPLv3+")))

(define (guile-reader guile)
  "Build Guile-Reader against GUILE, a package of some version of Guile 1.8
or 2.0."
  (package
   (name (string-append "guile-reader-for-guile-" (package-version guile)))
   (version "0.6")
   (source  (origin
             (method http-fetch)
             (uri (string-append
                   "http://download-mirror.savannah.gnu.org/releases/guile-reader/guile-reader-"
                   version ".tar.gz"))
             (sha256
              (base32
               "1svlyk5pm4fsdp2g7n6qffdl6fdggxnlicj0jn9s4lxd63gzxy1n"))))
   (build-system gnu-build-system)
   (native-inputs `(("pkgconfig" ,(nixpkgs-derivation* "pkgconfig"))
                    ("gperf" ,(nixpkgs-derivation* "gperf"))))
   (inputs `(("guile" ,guile)))
   (description "Guile-Reader, a simple framework for building readers for
GNU Guile")
   (long-description
"Guile-Reader is a simple framework for building readers for GNU Guile.

The idea is to make it easy to build procedures that extend Guile’s read
procedure. Readers supporting various syntax variants can easily be written,
possibly by re-using existing “token readers” of a standard Scheme
readers. For example, it is used to implement Skribilo’s R5RS-derived
document syntax.

Guile-Reader’s approach is similar to Common Lisp’s “read table”, but
hopefully more powerful and flexible (for instance, one may instantiate as
many readers as needed).")
   (home-page "http://www.nongnu.org/guile-reader/")
   (license "GPLv3+")))

(define-public guile-reader/guile-1.8
  ;; Guile-Reader built against Guile 1.8.
  (guile-reader guile-1.8))

(define-public guile-reader/guile-2.0
  ;; Guile-Reader built against Guile 2.0.
  (guile-reader guile-2.0))

(define-public lout
  ;; This one is a bit tricky, because it doesn't follow the GNU Build System
  ;; rules.  Instead, it has a makefile that has to be patched to set the
  ;; prefix, etc., and it has no makefile rules to build its doc.
  (let ((configure-phase
         '(lambda* (#:key outputs #:allow-other-keys)
            (let ((out (assoc-ref outputs "out"))
                  (doc (assoc-ref outputs "doc")))
              (substitute* "makefile"
                (("^PREFIX[[:blank:]]*=.*$")
                 (string-append "PREFIX = " out "\n"))
                (("^LOUTLIBDIR[[:blank:]]*=.*$")
                 (string-append "LOUTLIBDIR = " out "/lib/lout\n"))
                (("^LOUTDOCDIR[[:blank:]]*=.*$")
                 (string-append "LOUTDOCDIR = " doc "/doc/lout\n"))
                (("^MANDIR[[:blank:]]*=.*$")
                 (string-append "MANDIR = " out "/man\n")))
              (mkdir out)
              (mkdir (string-append out "/bin"))  ; TODO: use `mkdir-p'
              (mkdir (string-append out "/lib"))
              (mkdir (string-append out "/man"))
              (mkdir doc)
              (mkdir (string-append doc "/doc"))
              (mkdir (string-append doc "/doc/lout")))))
        (install-man-phase
         '(lambda* (#:key outputs #:allow-other-keys)
            (zero? (system* "make" "installman"))))
        (doc-phase
         '(lambda* (#:key outputs #:allow-other-keys)
            (define out
              (assoc-ref outputs "doc"))

            (setenv "PATH"
                    (string-append (assoc-ref outputs "out")
                                   "/bin:" (getenv "PATH")))
            (chdir "doc")
            (every (lambda (doc)
                     (format #t "doc: building `~a'...~%" doc)
                     (with-directory-excursion doc
                       (let ((file (string-append out "/doc/lout/"
                                                  doc ".ps")))
                         (and (or (file-exists? "outfile.ps")
                                  (zero? (system* "lout" "-r4" "-o"
                                                  "outfile.ps" "all")))
                              (begin
                                (copy-file "outfile.ps" file)
                                #t)
                              (zero? (system* "ps2pdf"
                                              "-dPDFSETTINGS=/prepress"
                                              "-sPAPERSIZE=a4"
                                              file
                                              (string-append out "/doc/lout/"
                                                             doc ".pdf")))))))
                   '("design" "expert" "slides" "user")))))
   (package
    (name "lout")
    (version "3.39")
    (source (origin
             (method http-fetch)
             ;; FIXME: `http-get' doesn't follow redirects, hence the URL.
             (uri (string-append
                   "http://download-mirror.savannah.gnu.org/releases/lout/lout-"
                   version ".tar.gz"))
             (sha256
              (base32
               "12gkyqrn0kaa8xq7sc7v3wm407pz2fxg9ngc75aybhi5z825b9vq"))))
    (build-system gnu-build-system)               ; actually, just a makefile
    (outputs '("out" "doc"))
    (inputs `(("ghostscript" ,(nixpkgs-derivation* "ghostscript"))))
    (arguments `(#:modules ((guix build utils)
                            (guix build gnu-build-system)
                            (srfi srfi-1))        ; we need SRFI-1
                 #:tests? #f                      ; no "check" target

                 ;; Customize the build phases.
                 #:phases (alist-replace
                           'configure ,configure-phase

                           (alist-cons-after
                            'install 'install-man-pages
                            ,install-man-phase

                            (alist-cons-after
                             'install 'install-doc
                             ,doc-phase
                             %standard-phases)))))
    (description "Lout, a document layout system similar in style to LaTeX")
    (long-description
"The Lout document formatting system is now reads a high-level description of
a document similar in style to LaTeX and produces a PostScript or plain text
output file.

Lout offers an unprecedented range of advanced features, including optimal
paragraph and page breaking, automatic hyphenation, PostScript EPS file
inclusion and generation, equation formatting, tables, diagrams, rotation and
scaling, sorted indexes, bibliographic databases, running headers and
odd-even pages, automatic cross referencing, multilingual documents including
hyphenation (most European languages are supported), formatting of computer
programs, and much more, all ready to use.  Furthermore, Lout is easily
extended with definitions which are very much easier to write than troff of
TeX macros because Lout is a high-level, purely functional language, the
outcome of an eight-year research project that went back to the
beginning.")
    (license "GPLv3+")
    (home-page "http://savannah.nongnu.org/projects/lout/"))))

;;; Local Variables:
;;; eval: (put 'lambda* 'scheme-indent-function 1)
;;; eval: (put 'substitute* 'scheme-indent-function 1)
;;; eval: (put 'with-directory-excursion 'scheme-indent-function 1)
;;; End: