feat: add enable options for formatters and checks

cad/default.nix

@@ -96,6 +96,12 @@
               example = "3dfiles";
             };
           };
+
+          formatter = {
+            enable = lib.mkEnableOption "treefmt for formatting multiple types of files" // {default = true;};
+
+            nix = lib.mkEnableOption "formatting for nix files" // {default = true;};
+          };
         };
 
         config = lib.mkIf cfg.enable {
@@ -116,11 +122,6 @@
               // cfg.devShell.extraAttrs;
           };
 
-          # Formatter for nix files, available through 'nix fmt'
-          treefmt = {
-            programs.alejandra.enable = lib.mkDefault true;
-          };
-
           # Your custom packages
           # Accessible through 'nix build', 'nix shell', 'nix run', etc
           packages = lib.mkIf cfg.package.enable {
@@ -152,6 +153,11 @@
                 }
               '';
           };
+
+          # Formatter for nix files, available through 'nix fmt'
+          treefmt = lib.mkIf cfg.formatter.enable {
+            programs.alejandra.enable = lib.mkIf cfg.formatter.nix true;
+          };
         };
       });
     };

rust/default.nix

@@ -123,6 +123,19 @@
             };
           };
 
+          formatter = {
+            enable = lib.mkEnableOption "treefmt for formatting multiple types of files" // {default = true;};
+
+            nix = lib.mkEnableOption "formatting for nix files" // {default = true;};
+            rust = lib.mkEnableOption "formatting for rust files" // {default = true;};
+          };
+
+          checks = {
+            enable = lib.mkEnableOption "checks for rust" // {default = true;};
+
+            linter = lib.mkEnableOption "lints for rust" // {default = true;};
+          };
+
           craneLib = lib.mkOption {
             description = "The crane lib instance this module is using. Useful for overriding options";
             default = craneLib;
@@ -148,15 +161,6 @@
               // cfg.devShell.extraAttrs;
           };
 
-          # Formatter for nix files, available through 'nix fmt'
-          treefmt = {
-            programs.alejandra.enable = lib.mkDefault true;
-            programs.rustfmt = {
-              enable = true;
-              edition = manifest.edition;
-            };
-          };
-
           # Your custom packages
           # Accessible through 'nix build', 'nix shell', 'nix run', etc
           packages = lib.mkIf cfg.package.enable {
@@ -167,11 +171,20 @@
               // cfg.package.extraAttrs;
           };
 
-          checks = {
-            clippy = craneLib.cargoClippy {
+          # Formatter for nix files, available through 'nix fmt'
+          treefmt = lib.mkIf cfg.formatter.enable {
+            programs.alejandra.enable = lib.mkIf cfg.formatter.nix true;
+            programs.rustfmt = lib.mkIf cfg.formatter.rust {
+              enable = true;
+              edition = manifest.edition;
+            };
+          };
+
+          checks = lib.mkIf cfg.checks.enable {
+            clippy = lib.mkIf cfg.checks.linter (craneLib.cargoClippy {
               inherit src buildInputs nativeBuildInputs cargoArtifacts;
               cargoClippyExtraArgs = "-- --deny warnings";
-            };
+            });
           };
         };
       });