chore: add lint for codersdk dependencies (#14638)

Makefile

@@ -451,6 +451,7 @@ lint/ts:
 
 lint/go:
 	./scripts/check_enterprise_imports.sh
+	./scripts/check_codersdk_imports.sh
 	linter_ver=$(shell egrep -o 'GOLANGCI_LINT_VERSION=\S+' dogfood/contents/Dockerfile | cut -d '=' -f 2)
 	go run github.com/golangci/golangci-lint/cmd/golangci-lint@v$$linter_ver run
 .PHONY: lint/go

scripts/check_codersdk_imports.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+# This file checks all codersdk imports to be sure it doesn't import any packages
+# that are being replaced in go.mod.
+
+set -euo pipefail
+# shellcheck source=scripts/lib.sh
+source "$(dirname "${BASH_SOURCE[0]}")/lib.sh"
+cdroot
+
+deps=$(./scripts/list_dependencies.sh github.com/coder/coder/v2/codersdk)
+
+set +e
+replaces=$(grep "^replace" go.mod | awk '{print $2}')
+conflicts=$(echo "$deps" | grep -xF -f <(echo "$replaces"))
+
+if [ -n "${conflicts}" ]; then
+	error "$(printf 'codersdk cannot import the following packages being replaced in go.mod:\n%s' "${conflicts}")"
+fi
+log "codersdk imports OK"

scripts/list_dependencies.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+
+# This script lists all dependencies of a given package, including dependencies
+# of test files.
+
+# Usage: list_dependencies <package>
+
+set -euo pipefail
+
+if [[ "$#" -ne 1 ]]; then
+	echo "Usage: $0 <package>"
+	exit 1
+fi
+
+package="$1"
+all_deps=$(go list -f '{{join .Deps "\n"}}' "$package")
+test_imports=$(go list -f '{{ join .TestImports " " }}' "$package")
+xtest_imports=$(go list -f '{{ join .XTestImports " " }}' "$package")
+
+for pkg in $test_imports $xtest_imports; do
+	deps=$(go list -f '{{join .Deps "\n"}}' "$pkg")
+	all_deps+=$'\n'"$deps"
+done
+
+echo "$all_deps" | sort | uniq