(aws-cdk): go template breaks go list

#13840 added an app template for go and the filenames break go list ./... when cdk project is embedded inside of a Go project.

Reproduction Steps

mkdir project
cd project
cdk init app --language=typescript
go mod init github.com/test/project
echo "package main\nfunc main() { return }\n" > main.go
go list ./... # fails because of template files

package github.com/test/project/node_modules/aws-cdk/lib/init-templates/v1/app/go: invalid input file name "%name%.template.go"

What did you expect to happen?

I expected go list ./... to return a list of package names.

What actually happened?

List of package name was not returned and an error was returned instead.

package github.com/test/project/node_modules/aws-cdk/lib/init-templates/v1/app/go: invalid input file name "%name%.template.go"

Environment

• CDK CLI Version: 1.96.0 (build 39f3df8)
• Framework Version: ?
• Node.js Version: v15.13.0
• OS : macOS 11.2.3
• Language (Version): all
• Go (Version): 1.16.3

Other

I think it might be possible to add an empty go.mod file into the template directory to prevent this from happening, but I’m hardly an expert in Go.

---

This is 🐛 Bug Report

[mlafeldt]

Here’s my dirty quickfix for now:

--- package.json
+++ package.json
@@ -8,7 +8,8 @@
     "build": "tsc",
     "watch": "tsc -w",
     "test": "jest",
-    "cdk": "cdk"
+    "cdk": "cdk",
+    "postinstall": "rm -rf node_modules/aws-cdk/lib/init-templates/v1/app/go"
   },

(We don’t need those templates in already initialized projects anyway.)

[mlafeldt]

Since this is still a problem and there’s now a v2 template for Go, I had to update my workaround a bit:

"postinstall": "rm -rf node_modules/aws-cdk/lib/init-templates/*/app/go"