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Build mpdecimal from source to workaround unreliable launchpad.net by hugovk · Pull Request #149248 · python/cpython · GitHub

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Build mpdecimal from source to workaround unreliable launchpad.net - #149248

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hugovk merged 1 commit into
python:mainfrom
hugovk:3.15-mpdecimal-src
May 1, 2026
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Build mpdecimal from source to workaround unreliable launchpad.net#149248
hugovk merged 1 commit into
python:mainfrom
hugovk:3.15-mpdecimal-src

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hugovk commented May 1, 2026

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Canonical infra is unreliable right now:

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.

hugovk added needs backport to 3.13 bugs and security fixes needs backport to 3.14 bugs and security fixes infra CI, GitHub Actions, buildbots, Dependabot, etc. labels May 1, 2026

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Documentation build overview

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

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24 files changed · ± 24 modified

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hugovk enabled auto-merge (squash) May 1, 2026 18:37
hugovk merged commit 60b751c into python:main May 1, 2026
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hugovk deleted the 3.15-mpdecimal-src branch May 1, 2026 18:39

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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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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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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

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:

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" \

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

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

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