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Nuclos IntelliJ IDEA: core git, project git, Maven, Ajc, AspectJ, longpaths, checkout tag, development environment.

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graduation cap Tutorial: integrating Nuclos into IntelliJ IDEA

Integrate the Nuclos core into IntelliJ IDEA – clone repositories, configure Maven and the AspectJ compiler.

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titleTutorial
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titleDeveloper
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titleUpdated: Jul 2026
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titleapplies to Nuclos 4.2026.x

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Inhalt
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Objective

Integrate a Nuclos project (core) into the IntelliJ IDEA IDE to develop on the Nuclos source code or on extensions.

Prerequisites

  • a working Nuclos project installation;
  • IntelliJ IDEA (Ultimate), Maven, Git;
  • the AspectJ compiler plugin (Ajc) for the compiler settings.
Warnung
titleWindows: longpaths

Windows: configure Git for long file names:

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git config --system core.longpaths true

Clone the repositories

Clone both the project git and the core git. In the core, switch to the tag matching the Nuclos version of the project installation (git checkout <tag>).

Configure IntelliJ

  • Set up Maven: File → Settings → Build, Execution, Deployment → Build Tools → Maven.
  • Set the compiler to Ajc: … → Compiler → Java Compiler.
  • Rebuild the project; for problems see troubleshooting.

Related pages

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Rule code.

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gear Problems and error messages with the IDE


Troubleshooting.

Open →