gnu: Add noweb.

* gnu/packages/noweb.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.

gnu-system.am

@@ -118,6 +118,7 @@ GNU_SYSTEM_MODULES =				\
   gnu/packages/ncurses.scm			\
   gnu/packages/netpbm.scm			\
   gnu/packages/nettle.scm			\
+  gnu/packages/noweb.scm			\
   gnu/packages/ocaml.scm			\
   gnu/packages/oggvorbis.scm			\
   gnu/packages/openldap.scm			\

gnu/packages/noweb.scm

@@ -0,0 +1,96 @@
+;;; 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 (alist-cons-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))
+                 (alist-cons-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))
+                  (alist-replace
+                   'configure
+                   (lambda _
+                     ;; Jump in the source.
+                     (chdir "src")
+
+                     ;; The makefile reads "source: FAQ", but FAQ isn't
+                     ;; available.
+                     (substitute* "Makefile"
+                       (("FAQ") "")))
+                   %standard-phases)))
+       #: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"))))