update makefile

Makefile

@@ -1,30 +1,30 @@
-PYTHON := $(shell command -v python3 || command -v python || echo "none")
-PIP3 := $(shell command -v pip3 || command -v pip || echo "none")
-PG_VERSION := 16
+PYTHON ?= $(shell which python3 || which python)
+PIP ?= $(shell which pip3 || which pip)
+PG_VERSION ?= 16
 
 .PHONY: run
 run:
-	cargo pgrx run
+	@cargo pgrx run
 
 .PHONY: clean
 clean:
-	cargo clean
+	@cargo clean
 
 .PHONY: init
 init:
-	cargo install --locked cargo-pgrx
-	cargo pgrx init --pg$(PG_VERSION) download
+	@cargo install --locked cargo-pgrx
+	@cargo pgrx init --pg$(PG_VERSION) download
 
 .PHONY: lint
 lint:
-	cargo fmt --check
-	cargo clippy
+	@cargo fmt --check
+	@cargo clippy
 
 .PHONY: test
 test:
-	@if [ "$(PYTHON)" = "none" ]; then echo >&2 "Error: python3 is required."; exit 1; fi
-	@if [ "$(PIP)" = "none" ]; then echo >&2 "Error: pip3 is required."; exit 1; fi
-	$(PIP3) install aiosmtpd
-	trap 'kill `cat /tmp/smtpd.pid`' EXIT; \
+	@if [ -z "$(PYTHON)" ]; then echo "python3 or python not found"; exit 1; fi
+	@if [ -z "$(PIP)" ]; then echo "pip3 or pip not found"; exit 1; fi
+	@$(PIP) install aiosmtpd
+	@trap 'kill `cat /tmp/smtpd.pid`' EXIT; \
 	$(PYTHON) -m aiosmtpd -n & echo $$! > /tmp/smtpd.pid; \
 	cargo pgrx test pg$(PG_VERSION)