;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013 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 noweb)
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix build-system gnu)
  #:use-module (guix licenses))

(define-public noweb
  (package
    (name "noweb")
    (version "2.11b")
    (source (origin
             (method url-fetch)
             (uri (string-append "ftp://www.eecs.harvard.edu/pub/nr/noweb-"
                                 version ".tgz"))
             (sha256
              (base32
               "10hdd6mrk26kyh4bnng4ah5h1pnanhsrhqa7qwqy6dyv3rng44y9"))))
    (build-system gnu-build-system)
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         (add-before 'install 'pre-install
           (lambda* (#:key outputs #:allow-other-keys)
             (let ((out (assoc-ref outputs "out")))
               (mkdir-p (string-append out "/share/texmf/tex/latex"))
               #t)))
         (add-after 'install 'post-install
           (lambda* (#:key outputs inputs #:allow-other-keys)
             (let ((out (assoc-ref outputs "out"))
                   (cu  (assoc-ref inputs "coreutils"))
                   (du  (assoc-ref inputs "diffutils")))
               (with-directory-excursion out
                 (for-each (lambda (prog)
                             (substitute* prog
                               (("nawk") (which "awk"))))
                           (append (map (lambda (x)
                                          (string-append "bin/" x))
                                        '("noweb" "nountangle"
                                          "noroots" "noroff"
                                          "noindex"))
                                   (map (lambda (x)
                                          (string-append "lib/" x))
                                        '("btdefn" "emptydefn" "noidx"
                                          "pipedocs" "toascii" "tohtml"
                                          "toroff" "totex" "unmarkup"))))
                 (substitute* "bin/cpif"
                   (("^PATH=.*$")
                    (string-append "PATH=" cu "/bin:" du "/bin\n"))))
               #t)))
         (replace 'configure
           (lambda _
             ;; Jump in the source.
             (chdir "src")

             ;; The makefile reads "source: FAQ", but FAQ isn't
             ;; available.
             (substitute* "Makefile"
               (("FAQ") ""))
             #t)))
       #:make-flags (let ((out (assoc-ref %outputs "out")))
                      (list (string-append "BIN=" out "/bin")
                            (string-append "LIB=" out "/lib")
                            (string-append "MAN=" out "/share/man")
                            (string-append "TEXINPUTS=" out
                                           "/share/texmf/tex/latex")))
       #:tests? #f))                              ; no tests
    (home-page "http://www.cs.tufts.edu/~nr/noweb/")
    (synopsis "Literate programming tool")
    (description
     "Noweb is designed to meet the needs of literate programmers while
remaining as simple as possible.  Its primary advantages are simplicity,
extensibility, and language-independence—especially noticeable when compared
with other literate-programming tools.  noweb uses 5 control sequences to
WEB's 27.  The noweb manual is only 4 pages; an additional page explains how
to customize its LaTeX output.  noweb works “out of the box” with any
programming language, and supports TeX, LaTeX, HTML, and troff back ends.")
    (license (fsf-free "http://www.cs.tufts.edu/~nr/noweb/#copyright"))))
