From 1f638176847bc7a572aafa3705b8881915da5ab2 Mon Sep 17 00:00:00 2001
From: derped <derped@ophanim.de>
Date: Wed, 20 Nov 2024 20:30:51 +0100
Subject: [PATCH] Add pre-commit hook script to run nixfmt check.

---
 hooks/pre-commit | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100755 hooks/pre-commit

diff --git a/hooks/pre-commit b/hooks/pre-commit
new file mode 100755
index 0000000..7c1296a
--- /dev/null
+++ b/hooks/pre-commit
@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+
+printf "%s\n" "Running nixfmt pre-commit hook.";
+if ! which grep >/dev/null; then
+  printf '%s\n' "ERR: grep not found.";
+  exit 1;
+fi;
+
+if ! which nixfmt >/dev/null; then
+  printf '%s\n' "ERR: nixfmt not found.";
+  exit 1;
+fi;
+
+RESULT=0;
+for file in $(git diff --name-only --cached); do
+  if grep -q "\.nix$" <<< "${file}"; then
+    nixfmt -c <<< "$(git cat-file blob :"${file}")" 2> >(sed "s|<stdin>|${file}|");
+    RESULT=$(( RESULT || $? ));
+  fi;
+done;
+
+exit ${RESULT};