diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
index d713ebc..4c315a4 100644
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -12,6 +12,8 @@ jobs:
       - uses: actions/setup-go@v2
         with:
           go-version: '1.18'
+      - name: Checkout peers
+        run: make ci_checkout_peers CLONE_DEPTH=2
       - name: Run coverage
         run: make calculate_coverage
 
diff --git a/Makefile b/Makefile
index 7a8ab8b..e1f188d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,31 +1,11 @@
 
-GOHOME ?= ${HOME}
-GOPATH ?= ${GOHOME}
-GOBIN ?= ${GOPATH}/bin
-
-ZZZGO = $(wildcard ../xop*-go/*.zzzgo ../xop*-go/*/*.zzzgo ../xop*-go/*/*/*.zzzgo)
-ZZZGENERATED = $(patsubst %.zzzgo, %.go, $(ZZZGO))
-PB = xopproto/ingest.pb.go xopproto/ingest_grpc.pb.go
-TOOLS = ${GOBIN}/gofumpt ${GOBIN}/goimports ${GOBIN}/enumer
-TEST_ONLY ?= 
-
+ME = xop-go
 RELATED = xopresty-go xopotel-go
 
-all:	$(ZZZGENERATED) $(PB) .gitattributes
-	go generate ./...
-	go build ./...
-	for i in $(RELATED); do (echo $$i ...; cd ../$$i && go generate ./... && go build ./...); done
-
+include Makefile.common
 
 ci_checkout_peers:;
-	branch="$${GITHUB_REF##*/}"; for i in $(RELATED); do (cd ..; git clone https://github.com/xoplog/$$i --depth 1 -b $$branch || git clone https://github.com/xoplog/$$i --depth 1); done
-
-.gitattributes: $(ZZZGENERATED)
-	echo '*.zzzgo linguist-language=Go' > $@
-	echo 'doc.go linguist-documentation' >> $@
-	echo '*.md linguist-documentation' >> $@
-	echo '*.pb.go linguist-generated' >> $@
-	for i in $(ZZZGENERATED); do echo "$$i linguist-generated" >> $@; done
+	branch="$${GITHUB_REF##*/}"; for i in $(RELATED); do (cd ..; git clone https://github.com/xoplog/$$i --depth $(CLONE_DEPTH) -b $$branch || git clone https://github.com/xoplog/$$i --depth $(CLONE_DEPTH)); done
 
 test:	$(ZZZGENERATED) testadjuster
 	go generate ./...
@@ -49,23 +29,6 @@ citest:
 	XOPLEVEL_xoptestutil=warn XOPLEVEL_foo=debug go test -tags xoptesting ./xoptest/xoptestutil -run TestAdjuster -count 1
 	XOPLEVEL_xoptestutil=debug XOPLEVEL_foo=warn go test -tags xoptesting ./xoptest/xoptestutil -run TestAdjuster -count 1
 
-${GOBIN}/gofumpt:;
-	go install mvdan.cc/gofumpt@latest
-
-${GOBIN}/goimports:;
-	go install golang.org/x/tools/cmd/goimports@latest
-
-${GOBIN}/enumer:;
-	go install github.com/dmarkham/enumer@latest
-
-%.go : %.zzzgo tools/xopzzz/xopzzz.go $(TOOLS) Makefile
-	go run tools/xopzzz/xopzzz.go < $< > $@.tmp
-	-chmod +w $@
-	gofumpt -w $@.tmp 
-	goimports -w $@.tmp
-	-mv $@.tmp $@
-	-chmod -w $@
-
 calculate_coverage:
 	echo "mode: atomic" > coverage.txt
 	for d in $$(go list ./...); do \
@@ -84,21 +47,6 @@ calculate_coverage:
 		egrep -v 'xoptestutil/|xopoteltest/' > coverage.txt.tmp
 	mv coverage.txt.tmp coverage.txt
 
-coverage: calculate_coverage
-	go tool cover -html=coverage.txt
-
-golanglint:
-	# binary will be $(go env GOPATH)/bin/golangci-lint
-	curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $$(go env GOPATH)/bin v1.52.2
-	golangci-lint --version
-
-lint:;
-	golangci-lint run
-	
-misspell:;
-	go install github.com/client9/misspell/cmd/misspell@latest
-	misspell -w `find . -name \*.md`
-
 OTEL_TAG="v1.12.0"
 
 ../opentelemetry-specification:
diff --git a/Makefile.common b/Makefile.common
new file mode 100644
index 0000000..7250059
--- /dev/null
+++ b/Makefile.common
@@ -0,0 +1,55 @@
+
+GOHOME ?= ${HOME}
+GOPATH ?= ${GOHOME}
+GOBIN ?= ${GOPATH}/bin
+
+ZZZGO = $(wildcard ../xop*-go/*.zzzgo ../xop*-go/*/*.zzzgo ../xop*-go/*/*/*.zzzgo)
+ZZZGENERATED = $(patsubst %.zzzgo, %.go, $(ZZZGO))
+PB = xopproto/ingest.pb.go xopproto/ingest_grpc.pb.go
+TOOLS = ${GOBIN}/gofumpt ${GOBIN}/goimports ${GOBIN}/enumer
+TEST_ONLY ?= 
+CLONE_DEPTH ?= 1
+
+all:	$(ZZZGENERATED) $(PB) .gitattributes
+	go generate ./...
+	go build ./...
+	for i in $(RELATED); do (echo $$i ...; cd ../$$i && go generate ./... && go build ./...); done
+
+.gitattributes: $(ZZZGENERATED)
+	echo '*.zzzgo linguist-language=Go' > $@
+	echo 'doc.go linguist-documentation' >> $@
+	echo '*.md linguist-documentation' >> $@
+	echo '*.pb.go linguist-generated' >> $@
+	for i in $(ZZZGENERATED); do echo "$$i linguist-generated" >> $@; done
+
+${GOBIN}/gofumpt:;
+	go install mvdan.cc/gofumpt@latest
+
+${GOBIN}/goimports:;
+	go install golang.org/x/tools/cmd/goimports@latest
+
+${GOBIN}/enumer:;
+	go install github.com/dmarkham/enumer@latest
+
+%.go : %.zzzgo tools/xopzzz/xopzzz.go $(TOOLS) Makefile
+	go run tools/xopzzz/xopzzz.go < $< > $@.tmp
+	-chmod +w $@
+	gofumpt -w $@.tmp 
+	goimports -w $@.tmp
+	-mv $@.tmp $@
+	-chmod -w $@
+
+coverage: calculate_coverage
+	go tool cover -html=coverage.txt
+
+golanglint:
+	# binary will be $(go env GOPATH)/bin/golangci-lint
+	curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $$(go env GOPATH)/bin v1.52.2
+	golangci-lint --version
+
+lint:;
+	golangci-lint run
+	
+misspell:;
+	go install github.com/client9/misspell/cmd/misspell@latest
+	misspell -w `find . -name \*.md`
diff --git a/Makefile.peer b/Makefile.peer
new file mode 100644
index 0000000..3eaf8c6
--- /dev/null
+++ b/Makefile.peer
@@ -0,0 +1,25 @@
+
+include Makefile.common
+
+test:	$(ZZZGENERATED) testadjuster
+	go generate ./...
+	go test -tags xoptesting ./... -failfast $(TEST_ONLY)
+	go test -tags xoptesting -race ./... -failfast $(TEST_ONLY)
+
+citest:
+	go test ./... -failfast 
+	go test -race ./... -failfast 
+
+calculate_coverage:
+	echo "mode: atomic" > coverage.txt
+	for d in $$(go list ./...); do \
+	  go test -race -covermode=atomic -coverprofile=profile.out -coverpkg=github.com/xoplog/$(ME)/... $$d; \
+	  if [ -f profile.out ]; then \
+	    grep -v ^mode profile.out >> coverage.txt; \
+	    rm profile.out; \
+	  fi; \
+	done
+	grep -v '\.pb.go:' coverage.txt | \
+		egrep -v 'xoptestutil/|xopoteltest/' > coverage.txt.tmp
+	mv coverage.txt.tmp coverage.txt
+