feat(lang#nix): Add additional LSP command bindings

autoload/SpaceVim/layers/lang/nix.vim

@@ -10,8 +10,8 @@
 " @section lang#nix, layers-lang-nix
 " @parentsection layers
 " @subsection Intro
-" The lang#nix layer provides syntax highlighting for the Nix
+" The lang#nix layer provides syntax highlighting and basic LSP support for
-" expression language.
+" the Nix expression language.
 
 function! SpaceVim#layers#lang#nix#plugins() abort
   let plugins = []
@@ -20,11 +20,27 @@ function! SpaceVim#layers#lang#nix#plugins() abort
 endfunction
 
 function! SpaceVim#layers#lang#nix#config() abort
+  call SpaceVim#mapping#space#regesit_lang_mappings('nix', function('s:language_specified_mappings'))
 endfunction
 
+function! s:language_specified_mappings() abort
+  if SpaceVim#layers#lsp#check_filetype('nix')
+    call SpaceVim#mapping#space#langSPC('nnoremap', ['l', 'r'],
+          \ 'call SpaceVim#lsp#rename()', 'rename', 1)
+    call SpaceVim#mapping#space#langSPC('nnoremap', ['l', 's'],
+          \ 'call SpaceVim#lsp#show_line_diagnostics()', 'show-line-diagnostics', 1)
+    call SpaceVim#mapping#space#langSPC('nnoremap', ['l', 'd'],
+          \ 'call SpaceVim#lsp#go_to_def()', 'go-to-definition', 1)
+    call SpaceVim#mapping#space#langSPC('nnoremap', ['l', 'n'],
+         \ 'call SpaceVim#lsp#diagnostic_goto_next()', 'next-diagnostic', 1)
+    call SpaceVim#mapping#space#langSPC('nnoremap', ['l', 'p'],
+         \ 'call SpaceVim#lsp#diagnostic_goto_prev()', 'previous-diagnostic', 1)
+ endif
+endfunction
 
 function! SpaceVim#layers#lang#nix#health() abort
   call SpaceVim#layers#lang#nix#plugins()
   call SpaceVim#layers#lang#nix#config()
   return 1
 endfunction
+

docs/layers/lang/nix.md

@@ -10,7 +10,6 @@ description: "This layer adds Nix language support to SpaceVim."
 - [Description](#description)
 - [Features](#features)
 - [Install](#install)
-- [Key bindings](#key-bindings)
 
 <!-- vim-markdown-toc -->
 
@@ -21,6 +20,9 @@ This layer adds [Nix](https://nixos.org/nix/manual/) language support to SpaceVi
 ## Features
 
 - syntax highlighting
+- symbol renaming (LSP)
+- go to definition (LSP)
+- syntax checking (LSP)
 
 ## Install