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Subject: Cyclic dependency prevents installation of python39 (also python3)
Thread-Topic: Cyclic dependency prevents installation of python39 (also
 python3)
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Date: Mon, 15 Dec 2025 08:55:08 +0000
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From: Ronan Le Gallic via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Ronan Le Gallic <ronan DOT legallic AT nagra DOT com>
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Sender: "Cygwin" <cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com>

Greetings to the Cygwin Team,

Description

  *
The setup.ini file introduces a circular dependency between python39, python39-pip, and python39-setuptools.
  *
This cycle blocks the installation of python39 and any packages that depend on it.

Configuration Snippet (from setup.ini)
```INI
@ python39
depends2: ..., python39-pip, python39-setuptools, ...

@ python39-pip
depends2: ..., python39, ...

@ python39-setuptools
depends2: ..., python39, ...
```

Consequences

  *
Prevents installation of python39, and so python3
  *
Also blocks installation of packages that depend on python39, such as:
     *
clang
     *
gdb

---
Best regards,
Ronan

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