From b58c681189d361fa3bca9f537d1e732aa2369467 Mon Sep 17 00:00:00 2001
From: Sergey Kuznetsov <skuznetsov@ripple.com>
Date: Fri, 27 Feb 2026 18:36:10 +0000
Subject: [PATCH] chore: Make nix hook optional (#6431)

This change makes the `nix` pre-commit hook optional in development environments, and enforced only inside Github Actions.
---
 .github/workflows/pre-commit.yml |  2 +-
 .pre-commit-config.yaml          | 10 +++++++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/pre-commit.yml b/.github/workflows/pre-commit.yml
index 7793d1e3ab..54a84a426a 100644
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
@@ -11,7 +11,7 @@ on:
 jobs:
   # Call the workflow in the XRPLF/actions repo that runs the pre-commit hooks.
   run-hooks:
-    uses: XRPLF/actions/.github/workflows/pre-commit.yml@320be44621ca2a080f05aeb15817c44b84518108
+    uses: XRPLF/actions/.github/workflows/pre-commit.yml@56de1bdf19639e009639a50b8d17c28ca954f267
     with:
       runs_on: ubuntu-latest
       container: '{ "image": "ghcr.io/xrplf/ci/tools-rippled-pre-commit:sha-41ec7c1" }'
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 6e04c752e9..c17eb92787 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -61,7 +61,15 @@ repos:
     hooks:
       - id: nix-fmt
         name: Format Nix files
-        entry: nix --extra-experimental-features 'nix-command flakes' fmt
+        entry: |
+          bash -c '
+            if command -v nix &> /dev/null || [ "$GITHUB_ACTIONS" = "true" ]; then
+              nix --extra-experimental-features "nix-command flakes" fmt "$@"
+            else
+              echo "Skipping nix-fmt: nix not installed and not in GitHub Actions"
+              exit 0
+            fi
+          ' --
         language: system
         types:
           - nix