Add hello-world and todo-mvc Quarkus examples (500USD bounty)

[lihaoyi]

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From the maintainer Li Haoyi: I'm putting a 500USD bounty on this issue, payable by bank transfer on a merged PR implementing this.

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Mill's example test suite has examples for hello-world and todo-mvc projects using in Java using Spring-Boot and Micronaut built using Mill (https://github.com/com-lihaoyi/mill/tree/main/example/javalib/web). They're not super fleshed out, but they exist.

We should add similar hello-world/todo-mvc examples for the Quarkus web framework, which according to the IntelliJ dev survey is relatively popular (between Spring-Boot and Micronaut https://www.jetbrains.com/lp/devecosystem-2023/java/)

[lolgab]

I'm giving a shot to this.

[lolgab]

quarkus, in its maven and gradle plugins, does some code generation which seems to be necessary to create the main method to run applications. I'm going to create a contrib module to mimic what we need from the Maven plugin. Another missing thing which would be nice to have, is support for pom artifacts to centralize the version management for a framework. In quarkus you add:

  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>io.quarkus</groupId>
        <artifactId>quarkus-bom</artifactId>
        <version>${quarkus.platform.version}</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>
    </dependencies>
  </dependencyManagement>

And then you can add dependencies without setting the version, which will be automatically derived from the pom in quarkus-bom. I think this could be a nice addition to mill (maybe we could have dependencies like ivy"groupid:artifactid" without version, and derive the version from the pom artifacts. But I'm not going to work on this in the scope of quarkus.

[lefou]

The import-scope Maven dependencies are called BOM - Bill of Material. There are open requests for it in Mill and coursier:

• https://github.com/com-lihaoyi/mill/issues/1975
• https://github.com/coursier/coursier/issues/1390

I think @alexarchambault will work on it in the next months (https://github.com/com-lihaoyi/mill/discussions/3496).

[llvee]

@lolgab Did you complete this? If not maybe I will give this a shot in 24 hours from now.

[lolgab]

I haven't completed it yet.

[llvee]

@lolgab Would you like some help with it? Have you made a lot of progress?

[omarsoufiane]

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Looking forward to hearing your thoughts.