home: vim: don't use 'nixpkgs-fmt' with 'nil'

home/vim/plugin/settings/null-ls.lua

@@ -6,6 +6,18 @@ null_ls.setup({
     on_attach = lsp.on_attach,
 })
 
+-- Bazel
+null_ls.register({
+    null_ls.builtins.diagnostics.buildifier.with({
+        -- Only used if available
+        condition = utils.is_executable_condition("buildifier"),
+    }),
+    null_ls.builtins.formatting.buildifier.with({
+        -- Only used if available
+        condition = utils.is_executable_condition("buildifier"),
+    }),
+})
+
 -- C, C++
 null_ls.register({
     null_ls.builtins.formatting.clang_format.with({
@@ -29,7 +41,9 @@ null_ls.register({
     null_ls.builtins.formatting.nixpkgs_fmt.with({
         -- Only used if available, but prefer rnix if available
         condition = function()
-            return utils.is_executable("nixpkgs-fmt") and not utils.is_executable("rnix-lsp")
+            return utils.is_executable("nixpkgs-fmt")
+                and not utils.is_executable("rnix-lsp")
+                and not utils.is_executable("nil")
         end,
     }),
 })
@@ -116,6 +130,8 @@ null_ls.register({
         -- Indent with 4 spaces, simplify the code, indent switch cases,
         -- add space after redirection, use POSIX
         extra_args = { "-i", "4", "-s", "-ci", "-sr", "-ln", "posix" },
+        -- Restrict to POSIX sh
+        filetypes = { "sh" },
         -- Only used if available
         condition = utils.is_executable_condition("shfmt"),
     }),