build error: undefined: gob.UnRegisterName and gob.RegisterNamedType when building Kaiju editor

[mewmew]

Describe the bug
Building the Kaiju editor for rev eb5ac72 of Kaiju gives the following error:

kaiju/editor/codegen
# kaiju/editor/codegen
editor/codegen/runtime_type.go:57:7: undefined: gob.UnRegisterName
editor/codegen/runtime_type.go:58:7: undefined: gob.RegisterNamedType

To Reproduce
Steps to reproduce the behavior:

1. Clone and build the Go compiler for Kaiju.
2. Clone the kaiju repo, traverse into the src directory and run /path/to/kaiju-go/bin/go build -tags editor -v -o kaiju_editor -ldflags="-s -w" main.go
3. See build error above

Expected behavior
Successful compile.

Platform

• OS: Linux

Additional context

The standard encoding/gob package has no exported symbols named RegisterNamedType nor UnRegisterName.