;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016 Tobias Geerinckx-Rice <me@tobias.gr>
;;;
;;; 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 shells)
  #:use-module (gnu packages libedit)
  #:use-module (guix build-system gnu)
  #:use-module (guix download)
  #:use-module (guix licenses)
  #:use-module (guix packages))

(define-public dash
  (package
    (name "dash")
    (version "0.5.9")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "http://gondor.apana.org.au/~herbert/dash/files/"
                           name "-" version ".tar.gz"))
       (sha256
        (base32
         "17328wd9n5krr5wd37smrk0y7fdf8aa3hmhm02br5mqpq0a3nycj"))
       (modules '((guix build utils)))
       (snippet
        '(begin
           ;; The man page hails from BSD, where (d)ash is the default shell.
           ;; This isn't the case on Guix or indeed most other GNU systems.
           (substitute* "src/dash.1"
             (("the standard command interpreter for the system")
              "a command interpreter based on the original Bourne shell"))
           #t))))
    (build-system gnu-build-system)
    (inputs
     `(("libedit" ,libedit)))
    (arguments
     `(#:configure-flags '("--with-libedit")))
    (home-page "http://gondor.apana.org.au/~herbert/dash")
    (synopsis "POSIX-compliant shell optimised for size")
    (description
     "dash is a POSIX-compliant @command{/bin/sh} implementation that aims to be
as small as possible, often without sacrificing speed.  It is faster than the
GNU Bourne-Again Shell (@command{bash}) at most scripted tasks.  dash is a
direct descendant of NetBSD's Almquist Shell (@command{ash}).")
    (license (list bsd-3
                   gpl2+))))    ; mksignames.c