Use go-install for versioned dependencies

Signed-off-by: Vince Prignano <vincepri@redhat.com>

FAQ.md

@@ -4,13 +4,13 @@
 
 **A**: Each controller should only reconcile one object type.  Other
 affected objects should be mapped to a single type of root object, using
-the `EnqueueRequestForOwner` or `EnqueueRequestsFromMapFunc` event
+the `handler.EnqueueRequestForOwner` or `handler.EnqueueRequestsFromMapFunc` event
 handlers, and potentially indices. Then, your Reconcile method should
 attempt to reconcile *all* state for that given root objects.
 
 ### Q: How do I have different logic in my reconciler for different types of events (e.g. create, update, delete)?
 
-**A**: You should not.  Reconcile functions should be idempotent, and
+**A**: You should not. Reconcile functions should be idempotent, and
 should always reconcile state by reading all the state it needs, then
 writing updates.  This allows your reconciler to correctly respond to
 generic events, adjust to skipped or coalesced events, and easily deal

Makefile

@@ -36,12 +36,13 @@ export GO111MODULE=on
 
 # Tools.
 TOOLS_DIR := hack/tools
-TOOLS_BIN_DIR := $(TOOLS_DIR)/bin
+TOOLS_BIN_DIR := $(abspath $(TOOLS_DIR)/bin)
 GOLANGCI_LINT := $(abspath $(TOOLS_BIN_DIR)/golangci-lint)
 GO_APIDIFF := $(TOOLS_BIN_DIR)/go-apidiff
 CONTROLLER_GEN := $(TOOLS_BIN_DIR)/controller-gen
 ENVTEST_DIR := $(abspath tools/setup-envtest)
 SCRATCH_ENV_DIR := $(abspath examples/scratch-env)
+GO_INSTALL := ./hack/go-install.sh
 
 # The help will print out all targets with their descriptions organized bellow their categories. The categories are represented by `##@` and the target descriptions by `##`.
 # The awk commands is responsible to read the entire set of makefiles included in this invocation, looking for lines of the file as xyz: ## something, and then pretty-format the target and help. Then, if there's a line with ##@ something, that gets pretty-printed as a category.
@@ -67,16 +68,29 @@ test-tools: ## tests the tools codebase (setup-envtest)
 ## Binaries
 ## --------------------------------------
 
-$(GO_APIDIFF): $(TOOLS_DIR)/go.mod # Build go-apidiff from tools folder.
-	cd $(TOOLS_DIR) && go build -tags=tools -o bin/go-apidiff github.com/joelanford/go-apidiff
+GO_APIDIFF_VER := v0.8.2
+GO_APIDIFF_BIN := go-apidiff
+GO_APIDIFF := $(abspath $(TOOLS_BIN_DIR)/$(GO_APIDIFF_BIN)-$(GO_APIDIFF_VER))
+GO_APIDIFF_PKG := github.com/joelanford/go-apidiff
 
-$(CONTROLLER_GEN): $(TOOLS_DIR)/go.mod # Build controller-gen from tools folder.
-	cd $(TOOLS_DIR) && go build -tags=tools -o bin/controller-gen sigs.k8s.io/controller-tools/cmd/controller-gen
+$(GO_APIDIFF): # Build go-apidiff from tools folder.
+	GOBIN=$(TOOLS_BIN_DIR) $(GO_INSTALL) $(GO_APIDIFF_PKG) $(GO_APIDIFF_BIN) $(GO_APIDIFF_VER)
 
-$(GOLANGCI_LINT): .github/workflows/golangci-lint.yml # Download golanci-lint using hack script into tools folder.
-	hack/ensure-golangci-lint.sh \
-		-b $(TOOLS_BIN_DIR) \
-		$(shell cat .github/workflows/golangci-lint.yml | grep "version: v" | sed 's/.*version: //')
+CONTROLLER_GEN_VER := v0.14.0
+CONTROLLER_GEN_BIN := controller-gen
+CONTROLLER_GEN := $(abspath $(TOOLS_BIN_DIR)/$(CONTROLLER_GEN_BIN)-$(CONTROLLER_GEN_VER))
+CONTROLLER_GEN_PKG := sigs.k8s.io/controller-tools/cmd/controller-gen
+
+$(CONTROLLER_GEN): # Build controller-gen from tools folder.
+	GOBIN=$(TOOLS_BIN_DIR) $(GO_INSTALL) $(CONTROLLER_GEN_PKG) $(CONTROLLER_GEN_BIN) $(CONTROLLER_GEN_VER)
+
+GOLANGCI_LINT_BIN := golangci-lint
+GOLANGCI_LINT_VER := $(shell cat .github/workflows/golangci-lint.yml | grep [[:space:]]version: | sed 's/.*version: //')
+GOLANGCI_LINT := $(abspath $(TOOLS_BIN_DIR)/$(GOLANGCI_LINT_BIN)-$(GOLANGCI_LINT_VER))
+GOLANGCI_LINT_PKG := github.com/golangci/golangci-lint/cmd/golangci-lint
+
+$(GOLANGCI_LINT): # Build golangci-lint from tools folder.
+	GOBIN=$(TOOLS_BIN_DIR) $(GO_INSTALL) $(GOLANGCI_LINT_PKG) $(GOLANGCI_LINT_BIN) $(GOLANGCI_LINT_VER)
 
 ## --------------------------------------
 ## Linting
@@ -126,6 +140,12 @@ verify-modules: modules ## Verify go modules are up to date
 		echo "go module files are out of date, please run 'make modules'"; exit 1; \
 	fi
 
+APIDIFF_OLD_COMMIT ?= $(shell git rev-parse origin/main)
+
+.PHONY: apidiff
+verify-apidiff: $(GO_APIDIFF) ## Check for API differences
+	$(GO_APIDIFF) $(APIDIFF_OLD_COMMIT) --print-compatible
+
 .PHONY: verify-generate
 verify-generate: generate ## Verify generated files are up to date
 	@if !(git diff --quiet HEAD); then \

hack/apidiff.sh

@@ -23,13 +23,6 @@ source $(dirname ${BASH_SOURCE})/common.sh
 REPO_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
 cd "${REPO_ROOT}"
 
-APIDIFF="hack/tools/bin/go-apidiff"
-
-header_text "fetching and building go-apidiff"
-make "${APIDIFF}"
-
-git status
-
 header_text "verifying api diff"
-header_text "invoking: '${APIDIFF} ${PULL_BASE_SHA} --print-compatible'"
-"${APIDIFF}" "${PULL_BASE_SHA}" --print-compatible
+echo "*** Running go-apidiff ***"
+APIDIFF_OLD_COMMIT="${PULL_BASE_SHA}" make verify-apidiff