Add option for ultisnips

autoload/SpaceVim.vim

@@ -109,6 +109,13 @@ let g:spacevim_enable_ycm              = 0
 " Set the width of the SpaceVim sidebar. Default is 30.
 " This value will be used by tagbar and vimfiler.
 let g:spacevim_sidebar_width           = 30
+""
+" Set the snippet engine of SpaceVim, default is neosnippet. to enable
+" ultisnips:
+" >
+"   let g:spacevim_snippet_engine = 'ultisnips'
+" <
+let g:spacevim_snippet_engine = 'neosnippet'
 let g:spacevim_enable_neocomplcache    = 0
 ""
 " Enable/Disable cursorline. Default is 0.

autoload/SpaceVim/layers/autocomplete.vim

@@ -31,8 +31,17 @@ function! SpaceVim#layers#autocomplete#plugins() abort
         \ ['Shougo/neopairs.vim',         { 'on_i' : 1}],
         \ ['Raimondi/delimitMate',        { 'merged' : 0}],
         \ ]
+  " snippet
+  if g:spacevim_snippet_engine ==# 'neosnippet'
+    call add(plugins,  ['Shougo/neosnippet.vim', { 'on_i'  : 1 ,
+          \ 'on_ft' : 'neosnippet',
+          \ 'loadconf' : 1,
+          \ 'on_cmd' : 'NeoSnippetEdit'}])
+  elseif g:spacevim_snippet_engine ==# 'ultisnips'
+    call add(plugins, ['SirVer/ultisnips',{ 'loadconf_before' : 1,
+          \ 'merged' : 0}])
+  endif
   if g:spacevim_autocomplete_method ==# 'ycm'
-    call add(plugins, ['SirVer/ultisnips',                  { 'loadconf_before' : 1, 'merged' : 0}])
     call add(plugins, ['ervandew/supertab',                 { 'loadconf_before' : 1, 'merged' : 0}])
     call add(plugins, ['Valloric/YouCompleteMe',            { 'loadconf_before' : 1, 'merged' : 0}])
   elseif g:spacevim_autocomplete_method ==# 'neocomplete'

autoload/SpaceVim/layers/lang.vim

@@ -1,6 +1,5 @@
 function! SpaceVim#layers#lang#plugins() abort
     let plugins = [
-                \ ['Shougo/neosnippet.vim',                  { 'on_i'  : 1 , 'on_ft' : 'neosnippet', 'loadconf' : 1, 'on_cmd' : 'NeoSnippetEdit'}],
                 \ ['groenewege/vim-less',                    { 'on_ft' : ['less']}],
                 \ ['cakebaker/scss-syntax.vim',              { 'on_ft' : ['scss','sass']}],
                 \ ['hail2u/vim-css3-syntax',                 { 'on_ft' : ['css','scss','sass']}],

doc/SpaceVim.txt

@@ -138,6 +138,13 @@ Enable/Disable YouCompleteMe. Default is 0.
 Set the width of the SpaceVim sidebar. Default is 30. This value will be used
 by tagbar and vimfiler.
 
+                                                   *g:spacevim_snippet_engine*
+Set the snippet engine of SpaceVim, default is neosnippet. to enable
+ultisnips:
+>
+  let g:spacevim_snippet_engine = 'ultisnips'
+<
+
                                                 *g:spacevim_enable_cursorline*
 Enable/Disable cursorline. Default is 0.
 >