{"id":568261,"date":"2025-05-21T11:38:40","date_gmt":"2025-05-21T10:38:40","guid":{"rendered":"https:\/\/blog.jetbrains.com\/?post_type=amper&p=568261"},"modified":"2025-09-15T10:08:03","modified_gmt":"2025-09-15T09:08:03","slug":"amper-update-may-2025","status":"publish","type":"amper","link":"https:\/\/blog.jetbrains.com\/en\/amper\/2025\/05\/amper-update-may-2025","title":{"rendered":"Amper Update, May 2025 \u2013 A Standalone Build Tool for Kotlin, Server-Side and Multiplatform"},"content":{"rendered":"\n

Amper 0.7.0<\/a> is here, expanding beyond multiplatform apps to include support for server-side development with Ktor and Spring, adding iOS to Amper\u2019s list of supported Kotlin Multiplatform targets, and much more. The standalone version of Amper is now the primary focus of the project, and the Gradle-based variant is being phased out. Read on for details, and as always, see the release notes<\/a> for the full list of changes.<\/p>\n\n\n\n

To use Amper\u2019s latest features, get IntelliJ IDEA 2025.1.2 Preview<\/a> (or newer).<\/em><\/p>\n\n\n\n

Server-side support for Ktor and Spring<\/h2>\n\n\n\n

Amper now offers support for Ktor<\/a> and Spring<\/a> projects out of the box, including the ability to package executable JARs and use BOM dependencies, as well as IDE integrations.<\/p>\n\n\n\n

The <\/a>ktor-simplest-sample<\/a> shows a minimal REST service built with Ktor and Amper:<\/p>\n\n\n\n

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Amper also supports Spring Boot applications. Try the classic Spring PetClinic sample<\/a> \u2013 now built with Amper:<\/p>\n\n\n\n

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You can enable support for Ktor or Spring in the module.yaml<\/code> file:<\/p>\n\n\n\n

product: jvm\/app\n\nsettings:\n\u00a0\u00a0ktor: enabled\n\u00a0\u00a0# or\n\u00a0\u00a0springBoot: enabled\n\u00a0\u00a0# ... rest of your module configuration ...<\/pre>\n\n\n\n
This sets up your module with sensible defaults: It adds the required compiler plugins like no-arg and all-open for Spring, applies the appropriate BOM, configures version catalogs, and lets you build an executable JAR using the new amper package<\/code><\/a> command.<\/p>\n\n\n\n
Amper integrates fully with existing IDE functionality for both Ktor and Spring. You get all the essentials, like run configurations and endpoint discovery, and advanced framework-specific tools, such as the Spring Bean Graph<\/a>.<\/p>\n\n\n\n
To try Amper in server-side projects, refer to the samples<\/a> in the repository. You can also use the new templates for server-side projects included in the amper init command.<\/p>\n\n\n    
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\n                                                Try the server-side samples<\/a>\n                                                    <\/div>\n    <\/div>\n\n\n\n\n\n\n\n
IDE improvements<\/h2>\n\n\n\n
Improved diagnostics and quick-fixes<\/strong><\/h3>\n\n\n\n
In Amper 0.7.0, we\u2019ve made a number of existing warnings and error messages more readable and actionable. We also ensured that Amper degrades gracefully when there are errors in the configuration, preserving tooling support to help you resolve any issues. Here are a few highlights:<\/p>\n\n\n\n
If a dependency version is overridden by another dependency that requests a newer version, Amper now reports this as a warning, provides a detailed explanation of why the override occurred, and offers a quick-fix to update the version to match:<\/p>\n\n\n\n
Providing clear diagnostics and actionable guidance for misconfigured builds is one of our top priorities. We\u2019re continuing to improve here and welcome your feedback in the issue tracker<\/a>.<\/p>\n\n\n\n
Adding dependencies for unresolved references<\/strong><\/h3>\n\n\n\n
When your code references a symbol from another module that isn\u2019t declared as a dependency yet, Amper now offers a quick-fix to add it as a dependency without requiring you to leave the Kotlin file you\u2019re editing:<\/p>\n\n\n\n
Kotlin Multiplatform support in standalone Amper<\/h2>\n\n\n\n
With 0.7.0, the standalone version of Amper now supports Kotlin Multiplatform development for iOS, in addition to Android and Desktop. You can build, package, and run KMP apps for these platforms entirely with Amper. No need to directly configure other build tools \u2013 Amper handles all native toolchain integrations behind the scenes.<\/p>\n\n\n\n
As an example, we have converted the updated KotlinConf app for these platforms to Amper. You can find the code on this branch<\/a>.<\/p>\n\n\n\n
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To learn more about KMP projects with Amper, take a look at the samples<\/a> in the repository.<\/p>\n\n\n    
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\n                                                Try the Amper-based KMP samples<\/a>\n                                                    <\/div>\n    <\/div>\n\n\n\n\n\n\n\n
The future of standalone Amper and Gradle-based Amper<\/h2>\n\n\n\n
Amper was initially released as a Gradle-based configuration tool. Gradle\u2019s capabilities and plugin ecosystem helped us prototype quickly and supported early adoption patterns, including per-module migration and the ability to customize the build logic.<\/p>\n\n\n\n
Since then, we\u2019ve released a standalone version of Amper that handles the build process entirely on its own, without requiring users to interact with other build tools. Our goal was to answer a few key questions:<\/p>\n\n\n\n