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GeezerVison is showing github.com — Build mpdecimal from source to workaround unreliable launchpad.net by hugovk · Pull Request #149248 · python/cpython

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@hugovk

@hugovk hugovk commented May 1, 2026

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Canonical infra is unreliable right now:

  • https://status.canonical.com/: "Canonical’s web infrastructure is under a sustained, cross-border attack and we are working to address it. We will provide more information in our official channels as soon as we are able to."
  • https://www.theregister.com/2026/05/01/canonical_confirms_ubuntu_infrastructure_under/

This is causing the libmpdec-dev install to fail from ppa:ondrej/php and launchpad.net.

Instead, until things stabilise, we can temporarily build from source.

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@hugovk
Build mpdecimal from source to workaround unreliable launchpad.net
5be4b5f
@hugovk
hugovk requested review from AA-Turner, ezio-melotti and webknjaz as code owners May 1, 2026 18:12
@hugovk hugovk added needs backport to 3.13 only security fixes needs backport to 3.14 bugs and security fixes infra CI, GitHub Actions, buildbots, Dependabot, etc. labels May 1, 2026
@bedevere-app bedevere-app Bot added the awaiting core review label May 1, 2026
@hugovk hugovk added skip issue skip news labels May 1, 2026
@read-the-docs-community

read-the-docs-community Bot commented May 1, 2026

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Documentation build overview

📚 cpython-previews | 🛠️ Build #32501975 | 📁 Comparing 5be4b5f against main (d96ffc1)

  🔍 Preview build  

24 files changed · ± 24 modified

± Modified

  • contents.html
  • download.html
  • genindex-B.html
  • genindex-C.html
  • genindex-D.html
  • genindex-E.html
  • genindex-H.html
  • genindex-I.html
  • genindex-P.html
  • genindex-R.html
  • and 14 more...
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@hugovk hugovk mentioned this pull request May 1, 2026
Fix source link in Doc/howto/descriptor.rst #149215
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zware
zware approved these changes May 1, 2026
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@bedevere-app bedevere-app Bot added awaiting merge and removed awaiting core review labels May 1, 2026
@hugovk
hugovk enabled auto-merge (squash) May 1, 2026 18:37
@hugovk
hugovk merged commit 60b751c into python:main May 1, 2026
68 checks passed

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@hugovk
hugovk deleted the 3.15-mpdecimal-src branch May 1, 2026 18:39
@miss-islington-app

miss-islington-app Bot commented May 1, 2026

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Thanks @hugovk for the PR 🌮🎉.. I'm working now to backport this PR to: 3.13, 3.14.
🐍🍒⛏🤖
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@bedevere-app bedevere-app Bot removed the awaiting merge label May 1, 2026
@miss-islington-app

miss-islington-app Bot commented May 1, 2026

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Sorry, @hugovk, I could not cleanly backport this to 3.14 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker 60b751c0181ec4f646666fb02bf4b44e3969e44c 3.14
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@miss-islington-app miss-islington-app Bot assigned hugovk May 1, 2026
@miss-islington-app

miss-islington-app Bot commented May 1, 2026

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Sorry, @hugovk, I could not cleanly backport this to 3.13 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker 60b751c0181ec4f646666fb02bf4b44e3969e44c 3.13
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@hugovk

hugovk commented May 1, 2026

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We don't actually need this for 3.14 (and likely 3.13) because it falls back to bundled libmpdec.

Both are still passing:

  • https://github.com/python/cpython/actions/workflows/build.yml?query=branch%3A3.14
  • https://github.com/python/cpython/actions/workflows/build.yml?query=branch%3A3.13
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@hugovk hugovk removed needs backport to 3.13 only security fixes needs backport to 3.14 bugs and security fixes labels May 1, 2026
@hugovk hugovk mentioned this pull request May 1, 2026
gh-149202: Implement PEP 831 – Frame Pointers Everywhere: Enabling System-Level Observability for Python #149201
Merged
@emmatyping emmatyping mentioned this pull request May 1, 2026
gh-90533: Implement BytesIO.peek() #30808
Closed
This was referenced May 2, 2026
gh-135056: Add a --header CLI argument to http.server #135057
Merged
Sometimes, on Linux, tests jobs from Actions fail in 'install dependencies' entry. #149417
Closed
asottile
asottile reviewed May 13, 2026
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Comment thread .github/workflows/posix-deps-apt.sh
Comment on lines +34 to +35
MPDECIMAL_VERSION=4.0.1
curl -fsSL "https://www.bytereef.org/software/mpdecimal/releases/mpdecimal-${MPDECIMAL_VERSION}.tar.gz" \

@asottile asottile May 13, 2026

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(late to the party) this should probably checksum the downloaded archive before extracting

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Reviewers

@zware zware zware approved these changes
@ezio-melotti ezio-melotti Awaiting requested review from ezio-melotti ezio-melotti is a code owner
@AA-Turner AA-Turner Awaiting requested review from AA-Turner AA-Turner is a code owner
@webknjaz webknjaz Awaiting requested review from webknjaz webknjaz is a code owner
+1 more reviewer
@asottile asottile asottile left review comments
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@hugovk hugovk

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@hugovk @asottile @zware
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