Use separate go.mod/go.sum to manage tool deps. (#736)

Fixes downstream `go get` issues due to broken/invalid
transitive goreleaser dependencies.

Fixes #730

.gitignore

@@ -5,5 +5,7 @@
 /.idea/
 /test/path
 /golangci-lint
-/tools/
+/tools/Dracula.itermcolors
+/tools/node_modules
+/tools/svg-term
 /.vscode/

Makefile

@@ -16,8 +16,11 @@ build_race: FORCE
 	go build -race -o golangci-lint ./cmd/golangci-lint
 build: golangci-lint
 clean:
-	rm -f golangci-lint test/path
-	rm -rf tools
+	rm -f golangci-lint
+	rm -f test/path
+	rm -f tools/svg-term
+	rm -f tools/Dracula.itermcolors
+	rm -rf tools/node_modules
 .PHONY: fast_build build build_race clean
 
 # Test
@@ -60,30 +63,29 @@ fast_check_generated:
 	git diff --exit-code # check no changes
 .PHONY: fast_check_generated
 
-release:
-	go run ./vendor/github.com/goreleaser/goreleaser
+release: export GOFLAGS = -mod=readonly
+release: .goreleaser.yml
+	cd tools && go run github.com/goreleaser/goreleaser --config ../.goreleaser.yml
 .PHONY: release
 
 # Non-PHONY targets (real files)
 
 golangci-lint: FORCE
 	go build -o $@ ./cmd/golangci-lint
 
-tools:
-	@mkdir -p tools
-
-tools/svg-term: tools
+tools/svg-term: tools/package.json tools/package-lock.json
 	cd tools && npm ci
 	ln -sf node_modules/.bin/svg-term $@
 
-tools/Dracula.itermcolors: tools
+tools/Dracula.itermcolors:
 	curl -fL -o $@ https://raw.githubusercontent.com/dracula/iterm/master/Dracula.itermcolors
 
 docs/demo.svg: tools/svg-term tools/Dracula.itermcolors
 	./tools/svg-term --cast=183662 --out docs/demo.svg --window --width 110 --height 30 --from 2000 --to 20000 --profile ./tools/Dracula.itermcolors --term iterm2
 
+install.sh: export GOFLAGS = -mod=readonly
 install.sh: .goreleaser.yml
-	go run ./vendor/github.com/goreleaser/godownloader .goreleaser.yml | sed '/DO NOT EDIT/s/ on [0-9TZ:-]*//' > $@
+	cd tools && go run github.com/goreleaser/godownloader ../.goreleaser.yml | sed '/DO NOT EDIT/s/ on [0-9TZ:-]*//' > ../$@
 
 README.md: FORCE golangci-lint
 	go run ./scripts/gen_readme/main.go

go.mod

@@ -21,8 +21,6 @@ require (
 	github.com/golangci/prealloc v0.0.0-20180630174525-215b22d4de21
 	github.com/golangci/revgrep v0.0.0-20180526074752-d9c87f5ffaf0
 	github.com/golangci/unconvert v0.0.0-20180507085042-28b1c447d1f4
-	github.com/goreleaser/godownloader v0.0.0-20190907185828-93b2b793cd90
-	github.com/goreleaser/goreleaser v0.118.0
 	github.com/matoous/godox v0.0.0-20190910121045-032ad8106c86
 	github.com/mattn/go-colorable v0.1.2
 	github.com/mitchellh/go-homedir v1.1.0
@@ -49,13 +47,6 @@ require (
 )
 
 replace (
-	// Fix godownloader/goreleaser deps (ambiguous imports/invalid pseudo-version)
-	// https://github.com/goreleaser/godownloader/issues/133
-	// https://github.com/goreleaser/goreleaser/issues/1145
-	github.com/Azure/go-autorest => github.com/Azure/go-autorest v13.0.1+incompatible
-	github.com/census-instrumentation/opencensus-proto => github.com/census-instrumentation/opencensus-proto v0.2.1
-	github.com/go-macaron/cors => github.com/go-macaron/cors v0.0.0-20190418220122-6fd6a9bfe14e
-
 	// https://github.com/timakin/bodyclose/pull/20
 	github.com/timakin/bodyclose => github.com/golangci/bodyclose v0.0.0-20190924091105-43b3ff1b0de0
 

tools/go.mod

@@ -0,0 +1,12 @@
+module github.com/golangci/golangci-lint/tools
+
+go 1.12
+
+require (
+	github.com/goreleaser/godownloader v0.0.0-20190924012648-96e3b3dd514b
+	github.com/goreleaser/goreleaser v0.118.1
+)
+
+// Fix godownloader/goreleaser deps (ambiguous imports/invalid pseudo-version)
+// https://github.com/goreleaser/goreleaser/issues/1145
+replace github.com/go-macaron/cors => github.com/go-macaron/cors v0.0.0-20190418220122-6fd6a9bfe14e