gnu: Add nvi.

* gnu/packages/nvi.scm: New file.
* gnu/packages/patches/nvi-assume-preserve-path.patch: New file.
* gnu-system.am: Add them.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu-system.am

@@ -180,6 +180,7 @@ GNU_SYSTEM_MODULES =				\
   gnu/packages/nettle.scm			\
   gnu/packages/node.scm				\
   gnu/packages/noweb.scm			\
+  gnu/packages/nvi.scm                          \
   gnu/packages/ocaml.scm			\
   gnu/packages/ocrad.scm			\
   gnu/packages/onc-rpc.scm			\
@@ -351,6 +352,7 @@ dist_patch_DATA =						\
   gnu/packages/patches/mit-krb5-init-fix.patch			\
   gnu/packages/patches/mpc123-initialize-ao.patch		\
   gnu/packages/patches/module-init-tools-moduledir.patch	\
+  gnu/packages/patches/nvi-assume-preserve-path.patch           \
   gnu/packages/patches/orpheus-cast-errors-and-includes.patch	\
   gnu/packages/patches/patchelf-page-size.patch			\
   gnu/packages/patches/patchutils-xfail-gendiff-tests.patch	\

gnu/packages/nvi.scm

@@ -0,0 +1,68 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2014 Marek Benc <merkur32@gmail.com>
+;;;
+;;; 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 nvi)
+  #:use-module (gnu packages)
+  #:use-module (gnu packages bdb)
+  #:use-module (gnu packages ncurses)
+  #:use-module (guix packages)
+  #:use-module (guix download)
+  #:use-module (guix build-system gnu)
+  #:use-module (guix licenses))
+
+(define-public nvi
+  (package
+    (name "nvi")
+    (version "1.81.6")
+    (source
+      (origin
+        (method url-fetch)
+        (uri          ;; sites.google.coma/bostic.com/keithbostic/vi is stale.
+          (string-append "http://harrier.slackbuilds.org/misc/nvi-" version
+                         ".tar.bz2"))
+        (sha256
+          (base32 "0nbbs1inyrqds0ywn3ln5slv54v5zraq7lszkg8nsavv4kivhh9l"))
+        (patches (list (search-patch "nvi-assume-preserve-path.patch")))
+        (snippet
+          ;; Create a wrapper for the configure script, make it executable.
+          '(let ((conf-wrap (open-output-file "configure")))
+             (display "#!/bin/sh" conf-wrap)
+             (newline conf-wrap)
+             (display
+               "../nvi-1.81.6/dist/configure --srcdir=../nvi-1.81.6/dist $@"
+               conf-wrap)
+             (newline conf-wrap)
+             (close-output-port conf-wrap)
+             (chmod "configure" #o0755)))))
+
+    (build-system gnu-build-system)
+    (arguments
+      `(#:out-of-source? #t))
+    (inputs
+      `(("bdb" ,bdb)
+        ("ncurses" ,ncurses)))
+    (synopsis "The Berkeley Vi Editor")
+    (description
+      "Vi is the original screen based text editor for Unix systems.  It is
+considered the standard text editor, and is available on almost all Unix
+systems.  Nvi is intended as a \"bug-for-bug compatible\" clone of the original
+BSD vi editor.  As such, it doesn't have a lot of snazzy features as do some
+of the other vi clones such as elvis and vim.  However, if all you want is vi,
+this is the one to get.")
+    (home-page "https://sites.google.com/a/bostic.com/keithbostic/vi")
+    (license bsd-3)))

gnu/packages/patches/nvi-assume-preserve-path.patch

@@ -0,0 +1,30 @@
+Make configure assume nvi can store backups in /var/tmp.
+
+--- a/dist/configure	2014-09-01 14:46:01.075778095 +0200
++++ b/dist/configure	2014-09-01 14:52:08.411790122 +0200
+@@ -21319,23 +21319,8 @@
+ if test "${vi_cv_path_preserve+set}" = set; then
+   echo $ECHO_N "(cached) $ECHO_C" >&6
+ else
+-  	dirlist="/var/preserve /var/tmp /usr/tmp"
+-	vi_cv_path_preserve=no
+-	for i in $dirlist; do
+-		if test -d $i/vi.recover; then
+-			vi_cv_path_preserve=$i/vi.recover
+-			break;
+-		fi
+-	done
+-	if test "$vi_cv_path_preserve" = no; then
+-		for i in $dirlist; do
+-			if test -d $i -a -w $i; then
+-				vi_cv_path_preserve=$i/vi.recover
+-				break;
+-			fi
+-		done
+-
+-	fi
++#	Assume /var/tmp
++	vi_cv_path_preserve=/var/tmp/vi.recover
+ fi
+ 
+ if test "$vi_cv_path_preserve" = no; then