diff --git a/.mdl_style.rb b/.mdl_style.rb
deleted file mode 100644
index 6a1bb85..0000000
--- a/.mdl_style.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/usr/bin/env ruby
-
-all
-rule 'MD007', :indent => 2
-rule 'MD013', :tables => false
diff --git a/checks.nix b/checks.nix
index 77653e5..6d55445 100644
--- a/checks.nix
+++ b/checks.nix
@@ -4,65 +4,73 @@
   formatter,
   ...
 }:
-forEachSystem (system: {
-  pre-commit-check = inputs.pre-commit-hooks.lib.${system}.run {
-    src = ./.;
-    hooks = {
-      # nix checks
-      # Example custom hook for nix formatting
-      fmt-check = {
-        enable = true;
+forEachSystem (
+  system:
+  let
+    pkgs = inputs.nixpkgs.legacyPackages.${system};
+  in
+  {
+    pre-commit-check = inputs.pre-commit-hooks.lib.${system}.run {
+      src = ./.;
+      hooks = {
+        # nix checks
+        # Example custom hook for nix formatting
+        fmt-check = {
+          enable = true;
 
-        # The command to execute (mandatory):
-        entry = "${formatter.${system}}/bin/nixfmt --check";
+          # The command to execute (mandatory):
+          entry = "${formatter.${system}}/bin/nixfmt --check";
 
-        # The pattern of files to run on (default: "" (all))
-        # see also https://pre-commit.com/#hooks-files
-        files = "\\.nix$";
-      };
-      ## static analysis checks for nix
-      nil.enable = true;
-      statix.enable = true;
-      deadnix = {
-        enable = true;
-        settings = {
-          noUnderscore = true; # ignore variables starting with underscore
-          # ignore lambda patterns (useful for passing args from ({}@args)
-          # to other functions)
-          noLambdaPatternNames = true;
+          # The pattern of files to run on (default: "" (all))
+          # see also https://pre-commit.com/#hooks-files
+          files = "\\.nix$";
         };
+        ## static analysis checks for nix
+        nil.enable = true;
+        statix.enable = true;
+        deadnix = {
+          enable = true;
+          settings = {
+            noUnderscore = true; # ignore variables starting with underscore
+            # ignore lambda patterns (useful for passing args from ({}@args)
+            # to other functions)
+            noLambdaPatternNames = true;
+          };
+        };
+
+        # json hooks
+        check-json = {
+          enable = true;
+          # exclude vscode json files as they allow comments and check-json doesn't
+          excludes = [ "settings.json$" ];
+        };
+
+        # toml hooks
+        check-toml.enable = true;
+
+        # markdown hooks
+        mdl = {
+          enable = true;
+          settings.style =
+            (pkgs.writeText ".mdl_style.rb" ''
+              #!/usr/bin/env ruby
+
+              all
+              rule 'MD013', :tables => false
+            '').outPath;
+        };
+
+        # git hooks
+        check-merge-conflicts.enable = true;
+        ## prevents committing to main
+        no-commit-to-branch.enable = true;
+
+        # misc hooks
+        check-added-large-files.enable = true;
+        ## prevents two similarly named files for case sensitive systems
+        check-case-conflicts.enable = true;
+        detect-private-keys.enable = true;
       };
-
-      # json hooks
-      check-json = {
-        enable = true;
-        # exclude vscode json files as they allow comments and check-json doesn't
-        excludes = [ "settings.json$" ];
-      };
-
-      # toml hooks
-      check-toml.enable = true;
-
-      # markdown hooks
-      mdl = {
-        enable = true;
-        settings.rules = [
-          "all"
-          "rule 'MD007', :indent => 2"
-          "rule 'MD013', :tables => false"
-        ];
-      };
-
-      # git hooks
-      check-merge-conflicts.enable = true;
-      ## prevents committing to main
-      no-commit-to-branch.enable = true;
-
-      # misc hooks
-      check-added-large-files.enable = true;
-      ## prevents two similarly named files for case sensitive systems
-      check-case-conflicts.enable = true;
-      detect-private-keys.enable = true;
     };
-  };
-})
+  }
+)