ci: go mod tidy check (#8263)

Makefile

@@ -170,6 +170,7 @@ lintci:
 lint:
 	@cd erigon-lib && $(MAKE) lint
 	@./erigon-lib/tools/golangci_lint.sh
+	@./erigon-lib/tools/mod_tidy_check.sh
 
 ## clean:                             cleans the go cache, build dir, libmdbx db dir
 clean:

erigon-lib/Makefile

@@ -90,8 +90,11 @@ lint-licenses-deps:
 lint-licenses:
 	@./tools/licenses_check.sh
 
+lint-mod-tidy:
+	@./tools/mod_tidy_check.sh
+
 lint-deps: lintci-deps lint-licenses-deps
-lint: lintci lint-licenses
+lint: lintci lint-licenses lint-mod-tidy
 
 test:
 	$(GOTEST) --count 1 -p 2 ./...

erigon-lib/tools/golangci_lint.sh

@@ -15,7 +15,7 @@ then
 	echo "golangci-lint tool is not found, install it with:"
 	echo "    $scriptName --install-deps"
 	echo "or follow https://golangci-lint.run/usage/install/"
-	exit
+	exit 2
 fi
 
 golangci-lint run --config ./.golangci.yml

erigon-lib/tools/licenses_check.sh

@@ -15,7 +15,7 @@ if ! which go-licenses > /dev/null
 then
 	echo "go-licenses tool is not found, install it with:"
 	echo "    go install github.com/google/go-licenses@$goLicensesVersion"
-	exit
+	exit 2
 fi
 
 # enable build tags to cover maximum .go files

erigon-lib/tools/mod_tidy_check.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+go mod tidy
+
+if ! git diff --exit-code -- go.mod go.sum
+then
+	echo "ERROR: go.mod/sum is not tidy. Run 'go mod tidy' in $PWD and commit the changes."
+	exit 1
+fi