Simple project having executable product with different name fails to build with error "No such module"

[Revolt (Iulian Onofrei)]

Steps to reproduce:

• Run

  mkdir SomeToolName
  cd SomeToolName
  swift package init --type executable
  

• Open the SomeToolName/Package.swift file with Xcode
• Add

  products: [
      .executable(
          name: "stn",
          targets: ["SomeToolName"]
      ),
  ],
  

  after the name parameter
• Try to build the project

Current behaviour:

• The line @testable import SomeToolName fails to build with the error

  /Users/revolt/SomeToolName/Tests/SomeToolNameTests/SomeToolNameTests.swift:2:18 No such module 'SomeToolName'
  

Expected behaviour:

• The project should build.

Fixing attempts:

• I noticed that stn gets autocompleted on that line, but in that case, it fails to build with the error

  Undefined symbol: _$s3stn12SomeToolNameVACycfC
  

Am I doing something wrong, or is this (executable name customization and testing) not supported (yet)?