Add snippets support

after/ftplugin/haskell.vim

@@ -73,9 +73,9 @@ nnoremap <silent> <F8> :call LanguageClient#textDocument_rename()<CR>
 " deoplete
 call deoplete#custom#option('sources',{
 	\ '_': ['buffer'],
-	\ 'haskell': ['ultisnips', 'buffer', 'file', 'LanguageClient']
+	\ 'haskell': ['neosnippet', 'buffer', 'file', 'LanguageClient']
 	\ })
-inoremap <expr><tab> pumvisible() ? "\<c-n>" : "\<tab>"
+" inoremap <expr><tab> pumvisible() ? "\<c-n>" : "\<tab>"
 call deoplete#enable()
 
 

vimrc

@@ -71,6 +71,10 @@ else
   Plug 'roxma/vim-hug-neovim-rpc'
 endif
 
+" snippets
+Plug 'Shougo/neosnippet.vim'
+Plug 'honza/vim-snippets'
+
 " LSP
 " setting this per-language breaks "let g:LanguageClient_autoStart = 1",
 Plug 'autozimu/LanguageClient-neovim', {
@@ -170,6 +174,27 @@ endif
 set hidden
 
 
+" neosnippet
+" Plugin key-mappings.
+" Note: It must be "imap" and "smap".  It uses <Plug> mappings.
+imap <C-k>     <Plug>(neosnippet_expand_or_jump)
+smap <C-k>     <Plug>(neosnippet_expand_or_jump)
+xmap <C-k>     <Plug>(neosnippet_expand_target)
+
+" SuperTab like snippets behavior.
+" Note: It must be "imap" and "smap".  It uses <Plug> mappings.
+imap <expr><tab> neosnippet#expandable_or_jumpable() ? "\<Plug>(neosnippet_expand_or_jump)" : pumvisible() ? "\<c-n>" : "\<tab>"
+smap <expr><tab> neosnippet#expandable_or_jumpable() ? "\<Plug>(neosnippet_expand_or_jump)" : "\<tab>"
+
+" For conceal markers.
+if has('conceal')
+  set conceallevel=2 concealcursor=niv
+endif
+" Enable snipMate compatibility feature.
+let g:neosnippet#enable_snipmate_compatibility = 1
+let g:neosnippet#disable_runtime_snippets = 1
+
+
 " LSP
 let g:LanguageClient_autoStart = 0