clippy: init

Author: Eveeifyeve

README.md

@@ -222,7 +222,7 @@ functions.
 <!-- `> bash ./supported-programs.sh` -->
 
 <!-- BEGIN mdsh -->
-`treefmt-nix` currently supports 126 formatters:
+`treefmt-nix` currently supports 128 formatters:
 
 * [actionlint](programs/actionlint.nix)
 * [aiken](programs/aiken.nix)
@@ -238,6 +238,7 @@ functions.
 * [cabal-gild](programs/cabal-gild.nix)
 * [clang-format](programs/clang-format.nix)
 * [clang-tidy](programs/clang-tidy.nix)
+* [clippy](programs/clippy.nix)
 * [cljfmt](programs/cljfmt.nix)
 * [cmake-format](programs/cmake-format.nix)
 * [csharpier](programs/csharpier.nix)

examples/formatter-clippy.toml

@@ -0,0 +1,6 @@
+# Example generated by ../examples.sh
+[formatter.clippy]
+command = "clippy"
+excludes = []
+includes = ["*.rs"]
+options = ["--edition", "2024"]

programs/clippy.nix

@@ -0,0 +1,45 @@
+{
+  lib,
+  config,
+  mkFormatterModule,
+  ...
+}:
+let
+  cfg = config.programs.clippy;
+in
+{
+  meta.maintainers = [
+    "DigitalBrewStudios/Treefmt-nix"
+  ];
+
+  imports = [
+    (mkFormatterModule {
+      name = "clippy";
+      mainProgram = "clippy";
+      includes = [ "*.rs" ];
+    })
+  ];
+
+  options.programs.clippy = {
+    denyWarnings = lib.mkEnableOption "clippy to denyWarnings";
+    edition = lib.mkOption {
+      type = lib.types.str;
+      default = "2024";
+      description = ''
+        Rust edition to target when linting
+      '';
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    settings.formatter.clippy = {
+      options = [
+        "--edition"
+        cfg.edition
+      ]
+      ++ lib.optionals cfg.denyWarnings [
+        "--deny-warnings"
+      ];
+    };
+  };
+}