Self-referential URL in the published pom

[markusheiden]

The Slack SDK version

1.46.0

Steps to reproduce:

1. Go to Maven central
2. See <url>${project.url}</url> in the pom.xml.

Expected result:

The project URL is set to an absolute value, e.g., https://docs.slack.dev/tools/java-slack-sdk/.

Actual result:

E.g., in Gradle dependency updates:

The following dependencies have later milestone versions:
 - com.slack.api:slack-api-client [1.45.4 -> 1.46.0]
     ${project.url}

[WilliamBergamin]

Thanks for opening this issue 💯

We recently updated our release strategy, it seems like the ${project.url} placeholder is not being populated properly when we do the deployment 🤔

[WilliamBergamin]

It seems like gradle may not be able to resolve the placeholders, would you be able to share your configuration so I can reproduce this behavior?

This configuration worked on our end

[markusheiden]

The problem is not Gradle, but using project.url for <project><url> in the pom. This defines <project><url> with itself.

If the project.url is provided externally (e.g. via Maven command line option) it needs to be replaced in the pom.xml at build time before publishing. Otherwise an URL (literal) should be used.

The problem is solved when the published pom.xml at Maven central no longer contains <url>${project.url}</url> but <url>https://a.real.url</url>.

The Gradle output I mentioned came from gradle dependencyUpdates when using Slack version 1.45.4 and 1.46.0 is available.