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Re: [PATCH v4 06/24] python: add VERSION file

From: Cleber Rosa
Subject: Re: [PATCH v4 06/24] python: add VERSION file
Date: Tue, 16 Feb 2021 21:26:09 -0500

On Thu, Feb 11, 2021 at 01:58:38PM -0500, John Snow wrote:
> Python infrastructure as it exists today is not capable reliably of
> single-sourcing a package version from a parent directory. The authors
> of pip are working to correct this, but as of today this is not possible.
> The problem is that when using pip to build and install a python
> package, it copies files over to a temporary directory and performs its
> build there. This loses access to any information in the parent
> directory, including git itself.
> Further, Python versions have a standard (PEP 440) that may or may not
> follow QEMU's versioning. In general, it does; but naturally QEMU does
> not follow PEP 440. To avoid any automatically-generated conflict, a
> manual version file is preferred.
> I am proposing:
> - Python tooling follows the QEMU version, indirectly, but with a major
>   version of 0 to indicate that the API is not expected to be
>   stable. This would mean version,,, etc.
> - In the event that a Python package needs to be updated independently
>   of the QEMU version, a pre-release alpha version should be preferred,
>   but *only* after inclusion to the qemu development or stable branches.
>   e.g.,, and so on should be preferred prior to
>   5.2.0's release.
> - The Python core tooling makes absolutely no version compatibility
>   checks or constraints. It *may* work with releases of QEMU from the
>   past or future, but it is not required to.
>   i.e., "qemu.machine" will, for now, remain in lock-step with QEMU.
> - We reserve the right to split the qemu package into independently
>   versioned subpackages at a later date. This might allow for us to
>   begin versioning QMP independently from QEMU at a later date, if
>   we so choose.
> Implement this versioning scheme by adding a VERSION file and setting it
> to
> Signed-off-by: John Snow <jsnow@redhat.com>
> ---
>  python/VERSION   | 1 +
>  python/setup.cfg | 1 +
>  2 files changed, 2 insertions(+)
>  create mode 100644 python/VERSION

Reviewed-by: Cleber Rosa <crosa@redhat.com>

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