From c9ae0c58083bc5b26cea8510afd856b70457d5f4 Mon Sep 17 00:00:00 2001
From: William FH <13333726+hinthornw@users.noreply.github.com>
Date: Wed, 5 Apr 2023 09:34:24 -0700
Subject: [PATCH] Add lint_diff command (#2449)

It's helpful for developers to run the linter locally on just the
changed files.

This PR adds support for a `lint_diff` command.

Ruff is still run over the entire directory since it's very fast.
---
 Makefile | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index 24a18181..5fc6fff6 100644
--- a/Makefile
+++ b/Makefile
@@ -23,9 +23,13 @@ format:
 	poetry run black .
 	poetry run ruff --select I --fix .
 
-lint:
-	poetry run mypy .
-	poetry run black . --check
+PYTHON_FILES=.
+lint: PYTHON_FILES=.
+lint_diff: PYTHON_FILES=$(shell git diff --name-only --diff-filter=d master | grep -E '\.py$$')
+
+lint lint_diff:
+	poetry run mypy $(PYTHON_FILES)
+	poetry run black $(PYTHON_FILES) --check
 	poetry run ruff .
 
 test: