proposal: cmd/go: add -tags flag to go tool command

[yshngg]

Proposal Details

Background

When using Go 1.24's tool dependency tracking with go get -tool to install the golang-migrate/migrate CLI, executing via go tool github.com/golang-migrate/migrate/v4/cmd/migrate resulted in a connection error. The root cause was a build constraint mismatch due to missing build tag specifications during invocation.

The migrate CLI requires explicit build tags (e.g., postgres, mysql) to conditionally compile database drivers. This works correctly when using go install with tags:

go install -tags 'postgres' github.com/golang-migrate/migrate/v4/cmd/migrate@latest

But go tool [tool name] command lacks explicit support for build tags (-tags) when invoked directly.

Expectation

Extend the go tool command to accept a -tags flag, propagating build tags to the underlying compilation process.

For example:

go tool -tags 'postgres' github.com/golang-migrate/migrate/v4/cmd/migrate