gnu: Use ghostscript over ghostscript-gs.

* gnu/packages/engineering.scm (fastcap)[native-inputs],
gnu/packages/lout.scm (lout)[native-inputs],
gnu/packages/ocaml.scm (unison)[native-inputs],
gnu/packages/plotutils.scm (asymptote)[native-inputs],
gnu/packages/skribilo.scm (skribilo)[native-inputs]: Remove
ghostscript-gs.
* gnu/packages/gv.scm (gv)[propagated-inputs],
gnu/packages/music.scm (lilypond)[inputs],
gnu/packages/scheme.scm (chez-scheme)[native-inputs]: Use
ghostscript over ghostscript-gs.

gnu/packages/engineering.scm

@@ -233,8 +233,7 @@ optimizer; and it can produce photorealistic and design review images.")
     (build-system gnu-build-system)
     (native-inputs
      `(("texlive" ,texlive)
-       ("ghostscript" ,ghostscript)
-       ("ghostscript" ,ghostscript-gs)))
+       ("ghostscript" ,ghostscript)))
     (arguments
      `(#:make-flags '("CC=gcc" "RM=rm" "SHELL=sh" "all")
        #:parallel-build? #f

gnu/packages/gv.scm

@@ -1,6 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2013 Andreas Enge <andreas@enge.fr>
 ;;; Copyright © 2013, 2016 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2016 Efraim Flashner <efraim@flashner.co.il>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -39,7 +40,7 @@
             (sha256 (base32
                      "0q8s43z14vxm41pfa8s5h9kyyzk1fkwjhkiwbf2x70alm6rv6qi1"))))
    (build-system gnu-build-system)
-   (propagated-inputs `(("ghostscript" ,ghostscript-gs/x)))
+   (propagated-inputs `(("ghostscript" ,ghostscript/x)))
    (inputs `(("libx11" ,libx11)
              ("libxaw3d" ,libxaw3d)
              ("libxinerama" ,libxinerama)

gnu/packages/lout.scm

@@ -88,8 +88,7 @@
     (build-system gnu-build-system)               ; actually, just a makefile
     (outputs '("out" "doc"))
     (native-inputs
-     `(("ghostscript" ,ghostscript)
-       ("ghostscript-gs" ,ghostscript-gs)))
+     `(("ghostscript" ,ghostscript)))
     (arguments `(#:modules ((guix build utils)
                             (guix build gnu-build-system)
                             (srfi srfi-1))        ; we need SRFI-1

gnu/packages/music.scm

@@ -406,7 +406,7 @@ interface.  It is implemented as a frontend to @code{klick}.")
        ("font-tex-gyre" ,font-tex-gyre)
        ("fontconfig" ,fontconfig)
        ("freetype" ,freetype)
-       ("ghostscript" ,ghostscript-gs)
+       ("ghostscript" ,ghostscript)
        ("pango" ,pango)
        ("python" ,python-2)))
     (native-inputs

gnu/packages/ocaml.scm

@@ -5,6 +5,7 @@
 ;;; Copyright © 2015 David Hashe <david.hashe@dhashe.com>
 ;;; Copyright © 2016 Eric Bavier <bavier@member.fsf.org>
 ;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
+;;; Copyright © 2016 Efraim Flashner <efraim@flashner.co.il>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -573,7 +574,6 @@ libpanel, librsvg and quartz.")
     (native-inputs
      `(("ocaml" ,ocaml)
        ;; For documentation
-       ("ghostscript-gs" ,ghostscript-gs)
        ("ghostscript" ,ghostscript)
        ("texlive" ,texlive)
        ("hevea" ,hevea)

gnu/packages/plotutils.scm

@@ -186,8 +186,7 @@ colors, styles, options and details.")
     ;; "help" command in interactive mode, so adding a "doc" output is not
     ;; currently useful.
     (native-inputs
-     `(("gs" ,ghostscript-gs)           ;For tests
-       ("gs-2" ,ghostscript)             ;For dvipdfm
+     `(("gs" ,ghostscript)              ;For tests
        ("texinfo" ,texinfo)             ;For generating documentation
        ("texlive" ,texlive)             ;For tests and documentation
        ("emacs" ,emacs-minimal)

gnu/packages/scheme.scm

@@ -635,7 +635,7 @@ threads.")
        ("stex" ,stex)))
     (native-inputs
      `(("texlive" ,texlive)
-       ("ghostscript" ,ghostscript-gs)
+       ("ghostscript" ,ghostscript)
        ("netpbm" ,netpbm)))
     (outputs '("out" "doc"))
     (arguments

gnu/packages/skribilo.scm

@@ -63,8 +63,7 @@
 
        #:parallel-build? #f))
 
-    (native-inputs `(("pkg-config" ,pkg-config)
-                     ("ghostscript-gs" , ghostscript-gs)))
+    (native-inputs `(("pkg-config" ,pkg-config)))
 
     (inputs `(("guile" ,guile-2.0)
               ("imagemagick" ,imagemagick)