maven plugin "<importOrder/>" doesn't work for kotlin

[Lzxe92]

If you are submitting a bug, please include the following:

• summary of problem
  Trying to use ktlint with spotless maven plugin, however got error when running mvn spotless:check
• gradle or maven version

Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)
Maven home: C:\Users\P1332200\.m2\wrapper\dists\apache-maven-3.6.3-bin\1iopthnavndlasol9gbrbg6bf2\apache-maven-3.6.3
Java version: 11.0.8, vendor: Oracle Corporation, runtime: C:\software\jdk-11.0.8
Default locale: en_US, platform encoding: UTF-8
OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"

• spotless version
  2.1.0

• operating system and version

• copy-paste your full Spotless configuration block(s), and a link to a public git repo that reproduces the
  `
  com.diffplug.spotless
  spotless-maven-plugin
  ${spotless.version}
  

                <formats>
                    <!-- you can define as many formats as you want, each is independent -->
                    <format>
                        <!-- define the files to apply to -->
                        <includes>
                            <include>*.md</include>
                            <include>.gitignore</include>
                        </includes>
                        <!-- define the steps to apply to those files -->
                        <trimTrailingWhitespace/>
                        <endWithNewline/>
                        <indent>
                            <tabs>true</tabs>
                            <spacesPerTab>4</spacesPerTab>
                        </indent>
                    </format>
                </formats>
                <!-- define a language-specific format -->
                <java>
                    <!-- These are the defaults, you can override if you want -->
                    <includes>
                        <include>src/main/**/**/*.java</include>
                        <include>src/test/**/**/*.java</include>
                    </includes>
  
                    <importOrder /> <!-- standard import order -->
                    <importOrder>  <!-- or a custom ordering -->
                        <order>java,javax,org,com,com.diffplug,</order>  <!-- or use <file>${basedir}/eclipse.importorder</file> -->
                        <!-- You probably want an empty string at the end - all of the
                             imports you didn't specify explicitly will go there. -->
                    </importOrder>
  
                    <removeUnusedImports /> <!-- self-explanatory -->
  
                    <googleJavaFormat>
                        <version>1.9</version> <!-- optional -->
                        <style>GOOGLE</style>  <!-- or AOSP (optional) -->
                    </googleJavaFormat>
  
                    <licenseHeader>
                        <content>/* (C)$YEAR */</content>  <!-- or <file>${basedir}/license-header</file> -->
                    </licenseHeader>
                </java>
                <kotlin>
                    <!-- These are the defaults, you can override if you want -->
                    <includes>
                        <include>src/main/kotlin/**/*.kt</include>
                        <include>src/test/kotlin/**/*.kt</include>
                    </includes>
  
                    <importOrder/> <!-- standard import order -->
                    <importOrder>  <!-- or a custom ordering -->
                        <order>java,javax,org,com,com.diffplug,</order>  <!-- or use <file>${basedir}/eclipse.importorder</file> -->
                        <!-- You probably want an empty string at the end - all of the
                             imports you didn't specify explicitly will go there. -->
                    </importOrder>
  
                    <removeUnusedImports /> <!-- self-explanatory -->
  
                    <ktlint />   <!-- has its own section below -->
                    <ktfmt />    <!-- has its own section below -->
                    <prettierv/> <!-- has its own section below -->
  
                    <licenseHeader>
                        <content>/* (C)$YEAR */</content>  <!-- or <file>${basedir}/license-header</file> -->
                    </licenseHeader>
                </kotlin>
            </configuration>
        </plugin>`
  

problem if possible

• copy-paste the full content of any console errors emitted by gradlew spotless[Apply/Check] --stacktrace

If you're just submitting a feature request or question, no need for the above.

[nedtwigg]

It looks like you're using every single kotlin step at once. The kotlin section is meant to be a reference, not a quickstart. I would start here:

• https://github.com/diffplug/spotless/tree/main/plugin-maven#quickstart

And then pick which kotlin steps you want to use:

• https://github.com/diffplug/spotless/tree/main/plugin-maven#kotlin

But also, the importOrder step isn't meant to work for kotlin anyway, it's a typo in the docs. Thanks for reporting!