Add editorconfig file

.editorconfig

@@ -0,0 +1,13 @@
+# https://editorconfig.org
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.lock]
+insert_final_newline = false

flake.nix

@@ -12,6 +12,11 @@
         path = ./go1.18;
         description = "Go 1.18 development environment";
       };
+
+      rails = {
+        path = ./ruby-on-rails;
+        description = "Ruby on Rails development environment";
+      };
     };
   };
 }