CI: use staticcheck for linting

This commit switches the linter for Go code from golint to staticcheck.
Golint has been deprecated since last year and staticcheck is a
recommended replacement.

Signed-off-by: Lucas Servén Marín <lserven@gmail.com>

Makefile

@@ -38,14 +38,14 @@ DOCS_GEN_BINARY := bin/docs-gen
 DEEPCOPY_GEN_BINARY := bin/deepcopy-gen
 INFORMER_GEN_BINARY := bin/informer-gen
 LISTER_GEN_BINARY := bin/lister-gen
-GOLINT_BINARY := bin/golint
+STATICCHECK_BINARY := bin/staticcheck
 EMBEDMD_BINARY := bin/embedmd
 KIND_BINARY := $(shell pwd)/bin/kind
 KUBECTL_BINARY := $(shell pwd)/bin/kubectl
 BASH_UNIT := $(shell pwd)/bin/bash_unit
 BASH_UNIT_FLAGS :=
 
-BUILD_IMAGE ?= golang:1.18
+BUILD_IMAGE ?= golang:1.18.0
 BASE_IMAGE ?= alpine:3.15
 
 build: $(BINS)
@@ -165,7 +165,7 @@ fmt:
 	@echo $(GO_PKGS)
 	gofmt -w -s $(GO_FILES)
 
-lint: header $(GOLINT_BINARY)
+lint: header $(STATICCHECK_BINARY)
 	@echo 'go vet $(GO_PKGS)'
 	@vet_res=$$(GO111MODULE=on go vet -mod=vendor $(GO_PKGS) 2>&1); if [ -n "$$vet_res" ]; then \
 		echo ""; \
@@ -174,10 +174,10 @@ lint: header $(GOLINT_BINARY)
 		echo "$$vet_res"; \
 		exit 1; \
 	fi
-	@echo '$(GOLINT_BINARY) $(GO_PKGS)'
-	@lint_res=$$($(GOLINT_BINARY) $(GO_PKGS)); if [ -n "$$lint_res" ]; then \
+	@echo '$(STATICCHECK_BINARY) $(GO_PKGS)'
+	@lint_res=$$($(STATICCHECK_BINARY) $(GO_PKGS)); if [ -n "$$lint_res" ]; then \
 		echo ""; \
-		echo "Golint found style issues. Please check the reported issues"; \
+		echo "Staticcheck found style issues. Please check the reported issues"; \
 		echo "and fix them if necessary before submitting the code for review:"; \
 		echo "$$lint_res"; \
 		exit 1; \
@@ -358,8 +358,8 @@ $(LISTER_GEN_BINARY):
 $(DOCS_GEN_BINARY): cmd/docs-gen/main.go
 	go build -mod=vendor -o $@ ./cmd/docs-gen
 
-$(GOLINT_BINARY):
-	go build -mod=vendor -o $@ golang.org/x/lint/golint
+$(STATICCHECK_BINARY):
+	go build -mod=vendor -o $@ honnef.co/go/tools/cmd/staticcheck
 
 $(EMBEDMD_BINARY):
 	go build -mod=vendor -o $@ github.com/campoy/embedmd

go.mod

@@ -15,9 +15,9 @@ require (
 	github.com/prometheus/client_golang v1.11.0
 	github.com/spf13/cobra v1.2.1
 	github.com/vishvananda/netlink v1.1.1-0.20210330154013-f5de75959ad5
-	golang.org/x/lint v0.0.0-20210508222113-6edffad5e616
 	golang.org/x/sys v0.0.0-20211124211545-fe61309f8881
 	golang.zx2c4.com/wireguard/wgctrl v0.0.0-20211124212657-dd7407c86d22
+	honnef.co/go/tools v0.3.1
 	k8s.io/api v0.23.6
 	k8s.io/apiextensions-apiserver v0.23.6
 	k8s.io/apimachinery v0.23.6
@@ -27,6 +27,7 @@ require (
 )
 
 require (
+	github.com/BurntSushi/toml v0.4.1 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.1.1 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
@@ -62,13 +63,14 @@ require (
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/vishvananda/netns v0.0.0-20210104183010-2eb08e3e575f // indirect
 	golang.org/x/crypto v0.0.0-20211117183948-ae814b36b871 // indirect
-	golang.org/x/mod v0.4.2 // indirect
+	golang.org/x/exp/typeparams v0.0.0-20220218215828-6cf2b201936e // indirect
+	golang.org/x/mod v0.6.0-dev.0.20220106191415-9b9b3d81d5e3 // indirect
 	golang.org/x/net v0.0.0-20211209124913-491a49abca63 // indirect
 	golang.org/x/oauth2 v0.0.0-20210819190943-2bc19b11175f // indirect
 	golang.org/x/term v0.0.0-20210615171337-6886f2dfbf5b // indirect
 	golang.org/x/text v0.3.7 // indirect
 	golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac // indirect
-	golang.org/x/tools v0.1.6-0.20210820212750-d4cc65f0b2ff // indirect
+	golang.org/x/tools v0.1.11-0.20220316014157-77aa08bb151a // indirect
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 	golang.zx2c4.com/wireguard v0.0.0-20211123210315-387f7c461a16 // indirect
 	google.golang.org/appengine v1.6.7 // indirect

tools.go

@@ -19,7 +19,7 @@ package main
 
 import (
 	_ "github.com/campoy/embedmd"
-	_ "golang.org/x/lint/golint"
+	_ "honnef.co/go/tools/cmd/staticcheck"
 	_ "k8s.io/code-generator/cmd/client-gen"
 	_ "k8s.io/code-generator/cmd/deepcopy-gen"
 	_ "k8s.io/code-generator/cmd/informer-gen"