Fix gradle project convention deprecation

[patrick-dedication]

• this is deprecated since gradle 7.1 and will be removed with gradle 9 see here
• this holds my company from using org.gradle.warning.mode=fail

I see a TODO here which leads me to belive you might still want to support gradle < 7.1.
Edit: This is not true (Couldn't find out if that still holds true, if so this can't be merged.)
Otherwise I'm happy create additional PRs to fix the two TODOs associated with backwards compatibility.
If you create an Issue I'm happy to update the PR and commit message to reflect it.

Note:
As far as I can tell File SonarPropertyComputer has some lines that don't comply with your formatting settings from SonarSource/sonar-developer-toolset.
I could create an additional PR to fix that if thats ok with you.

[github-actions]

This PR is stale because it has been open 7 days with no activity. If there is no activity in the next 7 days it will be closed automatically

[jjohannes]

I just discovered this. I would appreciate this update to get rid of the deprecation warnings and to be prepared for Gradle 9.

Comment on backward compatibility: The changes in this PR do not break compatibility with Gradle 5 / 6 / 7. JavaPluginExtension exists and can be used since Gradle 4.10. Only the deprecation for JavaPluginConvention was added in 7.1.

[patrick-dedication]

Ah the master himself ❤️.
Thanks for clarifying!
Seems this repo is dead, I've also looked for ways to get in touch with the community but didn't find a Slack or so.
The only thing that I think might be worth is creating an issue in their backlog.

@jjohannes I wrote you a mail on 27.11., to the mail on your onepiece.software address. Maybe write me a mail to [email protected] so we can get in touch

[jjohannes]

@patrick-dedication dropped you a mail just yesterday. :)

The issue tracker for this project is here:
https://sonarsource.atlassian.net/jira/software/c/projects/SCANGRADLE/issues
Maybe you can also open an issue for the deprecations there and link this PR.

[patrick-dedication]

Seems I can't create an issue. Neither as guest nor when logged in.

[github-actions]

This PR is stale because it has been open 7 days with no activity. If there is no activity in the next 7 days it will be closed automatically

[patrick-dedication]

Created a forum post

[stefanroeck]

Cool, we need this, too. Any chance to get this PR merged?

[sonarqube-next]

Quality Gate passed

Issues
0 New issues
6 Fixed issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube

[dorian-burihabwa-sonarsource]

Hey @patrick-dedication,
Thank you for opening this PR. This issue has been our radar for a little while now and your PR confirms that the need for this change is growing stronger. Unfurtonately, because this breaks the CI, this might require a bit more work to pass across the array of settings we test in (include Gradle 6).
I will get back to the team to discuss the problem and we will keep you updated on the solution we settle on.

Cheers,

Dorian