[chore] use multimod diff

The logic from check-changes was moved to multimod diff.

Signed-off-by: Alex Boten <aboten@lightstep.com>

Makefile

@@ -432,44 +432,8 @@ push-tags: $(MULTIMOD)
 	done;
 
 .PHONY: check-changes
-check-changes: $(YQ)
-ifndef MODSET
-	@echo "MODSET not defined"
-	@echo "usage: make check-changes PREVIOUS_VERSION=<version eg 0.52.0> MODSET=beta"
-	exit 1
-endif
-ifndef PREVIOUS_VERSION
-	@echo "PREVIOUS_VERSION not defined"
-	@echo "usage: make check-changes PREVIOUS_VERSION=<version eg 0.52.0> MODSET=beta"
-	exit 1
-else
-ifeq (, $(findstring v,$(PREVIOUS_VERSION)))
-NORMALIZED_PREVIOUS_VERSION="v$(PREVIOUS_VERSION)"
-else
-NORMALIZED_PREVIOUS_VERSION="$(PREVIOUS_VERSION)"
-endif
-endif
-	@all_submods=$$($(YQ) e '.module-sets.*.modules[] | select(. != "go.opentelemetry.io/collector")' versions.yaml | sed 's/^go\.opentelemetry\.io\/collector\///'); \
-	mods=$$($(YQ) e '.module-sets.$(MODSET).modules[]' versions.yaml | sed 's/^go\.opentelemetry\.io\/collector\///'); \
-	changed_files=""; \
-	for mod in $${mods}; do \
-		if [ "$${mod}" == "go.opentelemetry.io/collector" ]; then \
-			changed_files+=$$(git diff --name-only $(NORMALIZED_PREVIOUS_VERSION) -- $$(printf '%s\n' $${all_submods[@]} | sed 's/^/:!/' | paste -sd' ' -) | grep -E '.+\.go$$'); \
-		elif ! git rev-parse --quiet --verify $${mod}/$(NORMALIZED_PREVIOUS_VERSION) >/dev/null; then \
-			echo "Module $${mod} does not have a $(NORMALIZED_PREVIOUS_VERSION) tag"; \
-			echo "$(MODSET) release is required."; \
-			exit 0; \
-		else \
-			changed_files+=$$(git diff --name-only $${mod}/$(NORMALIZED_PREVIOUS_VERSION) -- $${mod} | grep -E '.+\.go$$'); \
-		fi; \
-	done; \
-	if [ -n "$${changed_files}" ]; then \
-		echo "The following files changed in $(MODSET) modules since $(NORMALIZED_PREVIOUS_VERSION): $${changed_files}"; \
-	else \
-		echo "No $(MODSET) modules have changed since $(NORMALIZED_PREVIOUS_VERSION)"; \
-		echo "No need to release $(MODSET)."; \
-		exit 1; \
-	fi
+check-changes: $(MULTIMOD)
+	$(MULTIMOD) diff -p $(PREVIOUS_VERSION) -m $(MODSET)
 
 .PHONY: prepare-release
 prepare-release:

internal/tools/go.mod

@@ -14,7 +14,7 @@ require (
 	go.opentelemetry.io/build-tools/checkdoc v0.8.0
 	go.opentelemetry.io/build-tools/chloggen v0.8.0
 	go.opentelemetry.io/build-tools/crosslink v0.8.0
-	go.opentelemetry.io/build-tools/multimod v0.8.0
+	go.opentelemetry.io/build-tools/multimod v0.8.1-0.20230706213918-d079ff92449b
 	go.opentelemetry.io/build-tools/semconvgen v0.8.0
 	golang.org/x/exp v0.0.0-20230522175609-2e198f4a06a1
 	golang.org/x/tools v0.10.0

internal/tools/go.sum

@@ -656,8 +656,8 @@ go.opentelemetry.io/build-tools/chloggen v0.8.0 h1:vIKxmrbOzUDwCB8xmeej6Wc7u9dgY
 go.opentelemetry.io/build-tools/chloggen v0.8.0/go.mod h1:zuYbAo3TkrHo3C7lCrM5dHWSS50BDr0UfRYtyBFv2dQ=
 go.opentelemetry.io/build-tools/crosslink v0.8.0 h1:rYpcYwNX4//WbSvwHCiCPCczh9u+lYHLezrl9865nFA=
 go.opentelemetry.io/build-tools/crosslink v0.8.0/go.mod h1:rWAN3EQ4rJn5ewknqw/0CkfkU4t7toCAtkl5q7VZP/M=
-go.opentelemetry.io/build-tools/multimod v0.8.0 h1:6MARVCyZa5Tdn8KvRbSZzS7ypxB1gTrvLdeimCiBZSo=
-go.opentelemetry.io/build-tools/multimod v0.8.0/go.mod h1:aPgW8qbcE6IoLge1LUKO5yo4XmnxsPIA+cdFjn93QrI=
+go.opentelemetry.io/build-tools/multimod v0.8.1-0.20230706213918-d079ff92449b h1:Rk0wtQyi/7K3RRxUpOozW/KWcxNRCXf3rXxjS49cO9c=
+go.opentelemetry.io/build-tools/multimod v0.8.1-0.20230706213918-d079ff92449b/go.mod h1:Vs8mTh7dDxNjkICTUA6BnMuZXV8tySt42BeveqgHiqM=
 go.opentelemetry.io/build-tools/semconvgen v0.8.0 h1:vRAmN8CxZk9gQuzftkfmud1qLdWoCfeX0JG7zAc/LzI=
 go.opentelemetry.io/build-tools/semconvgen v0.8.0/go.mod h1:h0FPWeTZw4sfjNhfFdN3mMdbJfzI0XCaD+wTWe1r0xc=
 go.tmz.dev/musttag v0.7.0 h1:QfytzjTWGXZmChoX0L++7uQN+yRCPfyFm+whsM+lfGc=