gnu: Add neovim.

* gnu/packages/vim.scm (neovim): New variable.

gnu/packages/vim.scm

@@ -2,6 +2,7 @@
 ;;; Copyright © 2013 Cyril Roelandt <tipecaml@gmail.com>
 ;;; Copyright © 2016 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2016 ng0 <ng0@we.make.ritual.n0.is>
+;;; Copyright © 2017 Ricardo Wurmus <rekado@elephly.net>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -22,18 +23,23 @@
   #:use-module ((guix licenses) #:prefix license:)
   #:use-module (guix packages)
   #:use-module (guix download)
+  #:use-module (guix build-system cmake)
   #:use-module (guix build-system gnu)
   #:use-module (gnu packages)
   #:use-module (gnu packages acl)
   #:use-module (gnu packages admin) ; For GNU hostname
   #:use-module (gnu packages attr)
+  #:use-module (gnu packages base)
   #:use-module (gnu packages fontutils)
   #:use-module (gnu packages gawk)
   #:use-module (gnu packages gettext)
   #:use-module (gnu packages glib)
+  #:use-module (gnu packages gperf)
   #:use-module (gnu packages groff)
   #:use-module (gnu packages gtk)
   #:use-module (gnu packages image)
+  #:use-module (gnu packages jemalloc)
+  #:use-module (gnu packages libevent)
   #:use-module (gnu packages linux)
   #:use-module (gnu packages lua)
   #:use-module (gnu packages ncurses)
@@ -41,8 +47,10 @@
   #:use-module (gnu packages pkg-config)
   #:use-module (gnu packages python)
   #:use-module (gnu packages ruby)
+  #:use-module (gnu packages serialization)
   #:use-module (gnu packages shells)
   #:use-module (gnu packages tcl)
+  #:use-module (gnu packages terminals)
   #:use-module (gnu packages xdisorg)
   #:use-module (gnu packages xorg))
 
@@ -149,6 +157,78 @@ configuration files.")
        ("tcl" ,tcl)
        ,@(package-inputs vim)))))
 
+(define-public neovim
+  (package
+    (name "neovim")
+    (version "0.1.7")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://github.com/neovim/neovim/"
+                           "archive/v" version ".tar.gz"))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32
+         "0zjbpc4rhv5bcr353xqnbrc36zjvn7qvh8xf6s7n1bdi3788by6q"))))
+    (build-system cmake-build-system)
+    (arguments
+     `(#:modules ((srfi srfi-26)
+                  (guix build cmake-build-system)
+                  (guix build utils))
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'set-lua-paths
+           (lambda* (#:key inputs #:allow-other-keys)
+             (let* ((lua-version "5.2")
+                    (lua-cpath-spec
+                     (lambda (prefix)
+                       (let ((path (string-append prefix "/lib/lua/" lua-version)))
+                         (string-append path "/?.so;" path "/?/?.so"))))
+                    (lua-path-spec
+                     (lambda (prefix)
+                       (let ((path (string-append prefix "/share/lua/" lua-version)))
+                         (string-append path "/?.lua;" path "/?/?.lua"))))
+                    (lua-inputs (map (cute assoc-ref %build-inputs <>)
+                                     '("lua"
+                                       "lua-lpeg"
+                                       "lua-bitop"
+                                       "lua-libmpack"))))
+               (setenv "LUA_PATH"
+                       (string-join (map lua-path-spec lua-inputs) ";"))
+               (setenv "LUA_CPATH"
+                       (string-join (map lua-cpath-spec lua-inputs) ";"))
+               #t))))))
+    (inputs
+     `(("libuv" ,libuv)
+       ("msgpack" ,msgpack)
+       ("libtermkey" ,libtermkey)
+       ("libvterm" ,libvterm)
+       ("unibilium" ,unibilium)
+       ("jemalloc" ,jemalloc)
+       ("libiconv" ,libiconv)
+       ("lua" ,lua-5.2)
+       ("lua-lpeg" ,lua5.2-lpeg)
+       ("lua-bitop" ,lua5.2-bitop)
+       ("lua-libmpack" ,lua5.2-libmpack)))
+    (native-inputs
+     `(("pkg-config" ,pkg-config)
+       ("gettext" ,gettext-minimal)
+       ("gperf" ,gperf)))
+    (home-page "http://neovim.io")
+    (synopsis "Fork of vim focused on extensibility and agility")
+    (description "Neovim is a project that seeks to aggressively
+refactor Vim in order to:
+
+@itemize
+@item Simplify maintenance and encourage contributions
+@item Split the work between multiple developers
+@item Enable advanced external UIs without modifications to the core
+@item Improve extensibility with a new plugin architecture
+@end itemize\n")
+    ;; Neovim is licensed under the terms of the Apache 2.0 license,
+    ;; except for parts that were contributed under the Vim license.
+    (license (list license:asl2.0 license:vim))))
+
 (define-public vifm
   (package
     (name "vifm")