style: avoid final newlines in secrets/*

format using nixfmt-rfc-style

.editorconfig

@@ -20,6 +20,14 @@ indent_style = unset
 indent_size = unset
 
 [{.*,secrets}/**]
+end_of_line = false
+insert_final_newline = false
+trim_trailing_whitespace = unset
+charset = unset
+indent_style = unset
+indent_size = unset
+
+[*.rom]
 end_of_line = unset
 insert_final_newline = unset
 trim_trailing_whitespace = unset

flake.nix

@@ -102,6 +102,8 @@
       };
 
       flake = {
+        formatter."x86_64-linux" = inputs.unstable.legacyPackages."x86_64-linux".nixfmt-rfc-style;
+
         deploy.nodes = self.lib.deploy.mkDeployNodes self.nixosConfigurations {
         #example = {
         #  hostname = "example.com:22";

treefmt.toml

@@ -1,5 +1,6 @@
 [formatter.nix]
-command = "alejandra"
+command = "nix"
+options = ["fmt"]
 includes = ["*.nix"]
 excludes = ["pkgs/_sources/generated.nix"]