1 files changed, 42 insertions, 0 deletions
diff --git a/flake/checks.nix b/flake/checks.nix
new file mode 100644
index 0000000..87d4a7f
--- /dev/null
+++ b/flake/checks.nix
@@ -0,0 +1,42 @@
+{ inputs, ... }:
+{
+  perSystem =
+    { system, pkgs, ... }:
+    let
+      treefmtEval = inputs.treefmt-nix.lib.evalModule pkgs {
+        projectRootFile = "flake.nix";
+        programs = {
+          nixfmt.enable = true;
+          deadnix.enable = true;
+        };
+      };
+
+      mkPreCommitHooks =
+        src:
+        inputs.pre-commit-hooks.lib.${system}.run {
+          inherit src;
+          hooks = {
+            check-merge-conflicts.enable = true;
+            deadnix.enable = true;
+            detect-private-keys.enable = true;
+            end-of-file-fixer.enable = true;
+            mixed-line-endings.enable = true;
+            shellcheck = {
+              enable = true;
+              excludes = [ "\\.envrc$" ];
+            };
+            flake-checker.enable = true;
+            treefmt = {
+              enable = true;
+              entry = "${treefmtEval.config.build.wrapper}/bin/treefmt --ci";
+            };
+            trim-trailing-whitespace.enable = true;
+          };
+        };
+    in
+    {
+      checks = {
+        pre-commit-check = mkPreCommitHooks ./.;
+      };
+    };
+}