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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 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/>.
+
+(define-module (gnu packages lout)
+ #:use-module (guix licenses)
+ #:use-module (guix packages)
+ #:use-module (guix download)
+ #:use-module (guix utils)
+ #:use-module (guix build-system gnu))
+
+(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"))
+ (mkdir (string-append out "/lib"))
+ (mkdir (string-append out "/man"))
+ (mkdir-p (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 url-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
+ `(;; FIXME: Add dependency on Ghostscript.
+ ;; ("ghostscript" ,(lambda _
+ ;; (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)))))
+ (synopsis "Lout, a document layout system similar in style to LaTeX")
+ (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 gpl3+)
+ (home-page "http://savannah.nongnu.org/projects/lout/"))))