Add luacheck to lang servers and pre-commit

.pre-commit-config.yaml

@@ -13,3 +13,14 @@ repos:
           (?x)^(
             vim/colors/.*\.vim
           )$
+  - repo: local
+    hooks:
+      - id: luacheck
+        name: Luacheck
+        entry: luacheck
+        args:
+          - --globals
+          - vim
+          - --
+        language: system
+        types: [file, lua]

install-language-servers.sh

@@ -74,6 +74,9 @@ function install_linters() {
     # Makefile
     maybe_run go get -u github.com/mrtazz/checkmake
 
+    # Lua
+    maybe_run luarocks install luacheck
+
     echo ""
 }