autoformat nix files

change formatter alejandra -> nixfmt
reformat whole project

home-manager/neovim/default.nix

@@ -1,4 +1,4 @@
-{pkgs, ...}: {
+{ pkgs, ... }: {
   config = {
     programs.neovim = {
       enable = true;
@@ -16,6 +16,7 @@
         terraform-ls
         luaformatter
         efm-langserver
+        nixfmt
       ];
 
       plugins = with pkgs.vimPlugins; [
@@ -44,7 +45,7 @@
         {
           plugin = gitsigns-nvim;
           type = "lua";
-          config = "require(\"gitsigns\").setup()";
+          config = ''require("gitsigns").setup()'';
         }
         {
           plugin = nvim-cmp;

home-manager/neovim/lspconfig.lua

@@ -46,10 +46,14 @@ require'lspconfig'.terraformls.setup {
     capabilities = capabilities
 }
 
-local luaformat = {formatCommand = "lua-format -i", formatStdin = true}
 require'lspconfig'.efm.setup {
     on_attach = require("lsp-format").on_attach,
     init_options = {documentFormatting = true},
-    settings = {languages = {lua = {luaformat}}},
-    filetypes = {"lua"}
+    settings = {
+        languages = {
+            lua = {{formatCommand = "lua-format -i", formatStdin = true}},
+            nix = {{formatCommand = "nixfmt", formatStdin = true}}
+        }
+    },
+    filetypes = {"lua", "nix"}
 }