SPI-Server dependency not picked up

[finestructure]

We are using SwiftPM as a dependency in SPI-Server but it's not being picked up by our nightly job.

The error is:

Checking dependencies (1 packages) ...
Dependencies for https://github.com/SwiftPackageIndex/SwiftPackageIndex-Server ...
ERROR: NSError: Swift.DecodingError.keyNotFound(CodingKeys(stringValue: "relative", intValue: 1), Swift.DecodingError.Context(codingPath: [CodingKeys(stringValue: "dependencies", intValue: nil), _JSONKey(stringValue: "Index 0", intValue: 0), CodingKeys(stringValue: "sourceControl", intValue: nil), _JSONKey(stringValue: "Index 0", intValue: 0), CodingKeys(stringValue: "location", intValue: nil), CodingKeys(stringValue: "remote", intValue: nil), _JSONKey(stringValue: "Index 0", intValue: 0)], debugDescription: "No value associated with key CodingKeys(stringValue: \"relative\", intValue: 1) (\"relative\").", underlyingError: nil))

[finestructure]

What's funny is that this was a bug but I only noticed, because I couldn't find SwiftPM in the package index. This morning I was baffled that the nightly didn't pick it up and dug through the logs. We're now correctly finding SPI's dependencies:

Dependencies for https://github.com/SwiftPackageIndex/SwiftPackageIndex-Server.git ...
  - https://github.com/JohnSundell/Ink.git
  - https://github.com/swift-server-community/SwiftPrometheus.git
  - https://github.com/SwiftPackageIndex/DependencyResolution.git
  - https://github.com/SwiftPackageIndex/SPIManifest.git
  - https://github.com/SwiftPackageIndex/SemanticVersion.git
  - https://github.com/apple/swift-package-manager.git
  - https://github.com/dankinsoid/VaporToOpenAPI.git
  - https://github.com/pointfreeco/swift-custom-dump.git
  - https://github.com/pointfreeco/swift-parsing.git
  - https://github.com/pointfreeco/swift-snapshot-testing.git
  - https://github.com/scinfu/SwiftSoup.git
  - https://github.com/soto-project/soto.git
  - https://github.com/vapor/fluent-postgres-driver.git
  - https://github.com/vapor/fluent.git
  - https://github.com/vapor/vapor.git

Turns out SwiftPM has been in the index since May 30, 2020. I don't know what I was doing that I couldn't find it 🤷‍♂️