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gh-115119: defer removal of bundled libmpdec to 3.16#133997

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skirpichev:defer-libmpdec-removal/115119
Jul 2, 2025
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gh-115119: defer removal of bundled libmpdec to 3.16#133997
vstinner merged 7 commits intopython:mainfrom
skirpichev:defer-libmpdec-removal/115119

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@skirpichev skirpichev commented May 14, 2025 •
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@skirpichev skirpichev requested a review from AA-Turner May 14, 2025 11:00
@skirpichev skirpichev added needs backport to 3.13 bugs and security fixes needs backport to 3.14 bugs and security fixes labels May 14, 2025
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@skirpichev skirpichev requested a review from hugovk May 15, 2025 06:47
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skirpichev commented May 15, 2025

Oops, this seems to be not just a docs patch. I hope this still ok for backport.

@skirpichev skirpichev mentioned this pull request May 16, 2025
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@skirpichev skirpichev requested review from picnixz and vstinner May 30, 2025 05:41
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I don't have much to say but I'm neutral on delaying the removal.

@hugovk hugovk removed their request for review June 2, 2025 11:06
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vstinner commented Jun 2, 2025

defer removal of bundled libmpdec to 3.16

What is the rationale for defering the removal?

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skirpichev commented Jun 2, 2025

What is the rationale for defering the removal?

You can see the issue thread.

For my humble opinion the only excuse is that we miss removal of the implicit fallback to bundled copy (now #134078) in 3.14. (Though, this wasn't announced somewhere else.) We also miss libmpdec in latest ubuntu images. (I think this will be solved before 3.14 release.)

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AA-Turner commented Jun 2, 2025

For my humble opinion the only excuse is that we miss removal of the implicit fallback to bundled copy

I still think we can stick to the original plan (that is: remove the vendored copy in 3.15). The only issue to solve is installing development sources on Ubuntu for 24.04.

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skirpichev commented Jun 3, 2025

FYI, I restored removal PR: #133964. I think libmpdec can be installed from PPA for PHP.

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hugovk commented Jun 10, 2025

An RM decision isn't needed for normal feature changes in main aka 3.15. (And if it's deferred to 3.16, it's even less of this RM's decision :)

https://devguide.python.org/developer-workflow/development-cycle/#in-development-main-branch

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skirpichev commented Jun 11, 2025

Deferring a breaking change is always a good thing :-)

Maybe.

An RM decision isn't needed for normal feature changes in main aka 3.15.

This affects 3.14 as well, as we change announced plans.

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vstinner commented Jul 1, 2025

Since #134078 was just merged in Python 3.15, I think that it would be safe to postpone the removal to Python 3.16. Have one release with #134078 to see how it goes.

@skirpichev: There are now merge conflicts, can you try to address them?

@skirpichev skirpichev removed needs backport to 3.13 bugs and security fixes needs backport to 3.14 bugs and security fixes labels Jul 1, 2025
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skirpichev commented Jul 1, 2025

Oops, now it doesn't make less sense to backport this (configure.ac changes will be manual). It's expected to be merged first, not after #134078.

@skirpichev skirpichev added needs backport to 3.13 bugs and security fixes needs backport to 3.14 bugs and security fixes labels Jul 1, 2025
@skirpichev skirpichev requested a review from vstinner July 1, 2025 16:42
@vstinner vstinner removed needs backport to 3.13 bugs and security fixes needs backport to 3.14 bugs and security fixes labels Jul 2, 2025
@vstinner vstinner merged commit b19c9da into python:main Jul 2, 2025
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@github-project-automation github-project-automation bot moved this from Todo to Done in Docs PRs Jul 2, 2025
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vstinner commented Jul 2, 2025

Merged.

Oops, now it doesn't make less sense to backport this (configure.ac changes will be manual).

Do you mean that it doesn't make sense to backport this change, or that it should be backported manually?

@skirpichev skirpichev deleted the defer-libmpdec-removal/115119 branch July 2, 2025 09:32
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skirpichev commented Jul 2, 2025

Do you mean that it doesn't make sense to backport this change

No, it does!

that it should be backported manually?

Yes. I'll do this.

skirpichev added a commit to skirpichev/cpython that referenced this pull request Jul 2, 2025
@skirpichev
[3.14] pythongh-115119: Defer removal of bundled libmpdec to 3.16 (py…
ac33099 
…thonGH-133997)

Rename libmpdecimal -> libmpdec

see https://www.bytereef.org/mpdecimal/doc/libmpdec/index.html
(cherry picked from commit b19c9da)

Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>
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bedevere-app bot commented Jul 2, 2025

GH-136199 is a backport of this pull request to the 3.14 branch.

skirpichev added a commit to skirpichev/cpython that referenced this pull request Jul 2, 2025
@skirpichev
[3.13] pythongh-115119: Defer removal of bundled libmpdec to 3.16 (py…
79caac3 
…thonGH-133997)

Rename libmpdecimal -> libmpdec

see https://www.bytereef.org/mpdecimal/doc/libmpdec/index.html
(cherry picked from commit b19c9da)

Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>
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bedevere-app bot commented Jul 2, 2025

GH-136201 is a backport of this pull request to the 3.13 branch.

vstinner pushed a commit that referenced this pull request Jul 2, 2025
@skirpichev
[3.14] gh-115119: Defer removal of bundled libmpdec to 3.16 (GH-133997)…
23a990d 
… (#136199)

Rename libmpdecimal -> libmpdec

see https://www.bytereef.org/mpdecimal/doc/libmpdec/index.html
(cherry picked from commit b19c9da)
vstinner pushed a commit that referenced this pull request Jul 2, 2025
@skirpichev
[3.13] gh-115119: Defer removal of bundled libmpdec to 3.16 (GH-133997)…
1e6db47 
… (#136201)

Rename libmpdecimal -> libmpdec

see https://www.bytereef.org/mpdecimal/doc/libmpdec/index.html
(cherry picked from commit b19c9da)

Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>
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vstinner commented Jul 2, 2025

I merged the 3.13 and 3.14 backports, thanks.

AndPuQing pushed a commit to AndPuQing/cpython that referenced this pull request Jul 11, 2025
@skirpichev @AndPuQing
pythongh-115119: Defer removal of bundled libmpdec to 3.16 (python#13…
d9021b2 
…3997)

Rename libmpdecimal -> libmpdec

see https://www.bytereef.org/mpdecimal/doc/libmpdec/index.html
Pranjal095 pushed a commit to Pranjal095/cpython that referenced this pull request Jul 12, 2025
@skirpichev @Pranjal095
pythongh-115119: Defer removal of bundled libmpdec to 3.16 (python#13…
22b9910 
…3997)

Rename libmpdecimal -> libmpdec

see https://www.bytereef.org/mpdecimal/doc/libmpdec/index.html
picnixz pushed a commit to picnixz/cpython that referenced this pull request Jul 13, 2025
@skirpichev @picnixz
pythongh-115119: Defer removal of bundled libmpdec to 3.16 (python#13…
98d96e0 
…3997)

Rename libmpdecimal -> libmpdec

see https://www.bytereef.org/mpdecimal/doc/libmpdec/index.html
taegyunkim pushed a commit to taegyunkim/cpython that referenced this pull request Aug 4, 2025
@skirpichev @taegyunkim
pythongh-115119: Defer removal of bundled libmpdec to 3.16 (python#13…
a6f3560 
…3997)

Rename libmpdecimal -> libmpdec

see https://www.bytereef.org/mpdecimal/doc/libmpdec/index.html
Agent-Hellboy pushed a commit to Agent-Hellboy/cpython that referenced this pull request Aug 19, 2025
@skirpichev @Agent-Hellboy
pythongh-115119: Defer removal of bundled libmpdec to 3.16 (python#13…
175adab 
…3997)

Rename libmpdecimal -> libmpdec

see https://www.bytereef.org/mpdecimal/doc/libmpdec/index.html
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