
Fix a build issue when `go mod vendor` was used to vendor all the sources. This now includes Mage (`github.com/magefile/mage/mage`), so that the build tool itself can be built too.
Fix a build issue when `go mod vendor` was used to vendor all the sources. This now includes Mage (`github.com/magefile/mage/mage`), so that the build tool itself can be built too.