From f329dbeaba416ea006a71283195d3d7d18c79541 Mon Sep 17 00:00:00 2001
From: poacher <poacherGoneWild@proton.me>
Date: Tue, 22 Sep 2026 11:55:42 -0400
Subject: [PATCH] feat(scalafmt): init preset

---
 lib/presets.nix | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/lib/presets.nix b/lib/presets.nix
index 17000f4..3c8c9dc 100644
--- a/lib/presets.nix
+++ b/lib/presets.nix
@@ -227,4 +227,21 @@ in {
     files = "\\.zig$";
     serial = false;
   };
+
+  scalafmt = let
+    # scalafmt --check exits 0 on invalid scala so we need to wrap it to exit 1
+    check = pkgs.writeShellScriptBin "scalafmt-check" ''
+      out="$(${pkgs.scalafmt}/bin/scalafmt --check "$@" 2>&1)"
+      status=$?
+      if [ "$status" -ne 0 ] || printf '%s\n' "$out" | grep -q 'error:'; then
+        printf '%s\n' "$out"
+        exit 1
+      fi
+    '';
+  in
+    mkPreset {
+      entry = "${check}/bin/scalafmt-check";
+      files = "\\.scala$";
+      serial = false;
+    };
 }
-- 
2.51.2