Build fails when jsii package is enabled for Golang

[floydpink]

❓ Guidance

Affected Languages

• TypeScript or Javascript
• Python
• Java
• .NET (C#, F#, ...)
• Go

General Information

• JSII Version: 1.30.0 (build adae23f), typescript 3.9.9
• Platform: ubuntu-18.04 (GitHub Action OS)

The Question

I was experimenting with enabling Golang support for my existing jsii package - here are the changes I made to attempt this:

https://github.com/kollavarsham/kollavarsham-js/pull/579/files

Unfortunately, the npm run package command fails on the CI build (running as a GitHub Action), even though it succeeds locally on my machine.

This is the error that I am seeing on the GitHub action:

[jsii-pacmak] [VERBOSE] go mod download -modfile local.go.mod {"cwd":"/home/runner/work/kollavarsham-js/kollavarsham-js/dist/go/kollavarsham","env":{"GOSUMDB":"off"}}
[jsii-pacmak] [VERBOSE] go build -modfile local.go.mod ./... {"cwd":"/home/runner/work/kollavarsham-js/kollavarsham-js/dist/go/kollavarsham","env":{"GOSUMDB":"off"}}
kollavarsham.go:7:2: missing go.sum entry for module providing package github.com/aws/jsii-runtime-go/runtime (imported by github.com/kollavarsham/kollavarsham-go/kollavarsham/v2); to add:
	go get github.com/kollavarsham/kollavarsham-go/kollavarsham/v2
[jsii-pacmak] [WARN] Failed building go

Looks like this could be more about how I might be missing something on my GitHub action's setup - can someone knowledgeable in jsii and Go offer some advice to resolve this?

[floydpink]

Can someone kindly help out with this please?

/cc @NGL321 , @RomainMuller