Build godownloader/goreleaser tools before use. (#744)

Author: tpounds

.gitignore

@@ -6,6 +6,8 @@
 /test/path
 /golangci-lint
 /tools/Dracula.itermcolors
+/tools/godownloader
+/tools/goreleaser
 /tools/node_modules
 /tools/svg-term
 /.vscode/

Makefile

@@ -18,8 +18,10 @@ build: golangci-lint
 clean:
 	rm -f golangci-lint
 	rm -f test/path
-	rm -f tools/svg-term
 	rm -f tools/Dracula.itermcolors
+	rm -f tools/godownloader
+	rm -f tools/goreleaser
+	rm -f tools/svg-term
 	rm -rf tools/node_modules
 .PHONY: fast_build build build_race clean
 
@@ -63,16 +65,23 @@ fast_check_generated:
 	git diff --exit-code # check no changes
 .PHONY: fast_check_generated
 
-release: export GOFLAGS = -mod=readonly
-release: .goreleaser.yml
-	cd tools && go run github.com/goreleaser/goreleaser --config ../.goreleaser.yml
+release: .goreleaser.yml tools/goreleaser
+	./tools/goreleaser
 .PHONY: release
 
 # Non-PHONY targets (real files)
 
 golangci-lint: FORCE
 	go build -o $@ ./cmd/golangci-lint
 
+tools/godownloader: export GOFLAGS = -mod=readonly
+tools/godownloader: tools/go.mod tools/go.sum
+	cd tools && go build github.com/goreleaser/godownloader
+
+tools/goreleaser: export GOFLAGS = -mod=readonly
+tools/goreleaser: tools/go.mod tools/go.sum
+	cd tools && go build github.com/goreleaser/goreleaser
+
 tools/svg-term: tools/package.json tools/package-lock.json
 	cd tools && npm ci
 	ln -sf node_modules/.bin/svg-term $@
@@ -83,9 +92,8 @@ tools/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
-	cd tools && go run github.com/goreleaser/godownloader ../.goreleaser.yml | sed '/DO NOT EDIT/s/ on [0-9TZ:-]*//' > ../$@
+install.sh: .goreleaser.yml tools/godownloader
+	./tools/godownloader .goreleaser.yml | sed '/DO NOT EDIT/s/ on [0-9TZ:-]*//' > $@
 
 README.md: FORCE golangci-lint
 	go run ./scripts/gen_readme/main.go