Add rls

lsp.vim

@@ -0,0 +1,10 @@
+set hidden
+
+let g:LanguageClient_serverCommands = {
+    \ 'rust': ['rustup', 'run', 'nightly', 'rls'],
+    \ }
+
+nnoremap <silent> K :call LanguageClient_textDocument_hover()<CR>
+nnoremap <silent> gd :call LanguageClient_textDocument_definition()<CR>
+nnoremap <silent> <F2> :call LanguageClient_textDocument_rename()<CR>
+nnoremap <silent> S :call LanguageClient_textDocument_documentSymbol()<CR>

plug.vim

@@ -43,6 +43,8 @@ Plug 'valloric/youcompleteme'
 " groovy syntax and indent
 Plug 'vim-scripts/groovy.vim'
 Plug 'vim-scripts/groovyindent-unix'
+" LSP
+Plug 'autozimu/LanguageClient-neovim', {'tag': 'binary-*-x86_64-unknown-linux-musl'}
 
 " All of your Plugins must be added before the following line
 call plug#end()            " required

vimrc

@@ -15,6 +15,7 @@ source fzf.vim
 source mapping.vim
 source jsonnet.vim
 source racer.vim
+source lsp.vim
 exec "cd " . oldwd
 
 " turn on file type plugins