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We've upgraded to LLVM/Clang 22. See releases.llvm.org/22.1.0/tools... and releases.llvm.org/22.1.0/docs/... for the release notes

Good news: Thanks to the 'Git for Windows' team, we now have native Git packages in our repository, which should provide a similar experience to the official Git builds. Less battle tested and integrated, but please give it a try and let us know of any issues. www.msys2.org/news/#2026-0...

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Important events happening.

More deprecations: MINGW64, which got replaced by UCRT64 as our default env in 2022, is now deprecated. We'll not add any new packages for it, and will slowly start removing packages here and there. www.msys2.org/news/#2026-0...

msys2.org

MSYS2 - News

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Some deprecations: We no longer support Windows 8.1. It's EOL for 3 years now, and with Firefox dropping support too, now is a good time to say farewell. Things will not stop immediately, but no guarantees.

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Important events happening.

Haven't posted in while, so some old news: Right after updating to Python 3.13 we updated to 3.14 in January, and it was the smoothest update yet. We also made pip more strict, to not allow installing outside of a venv, to avoid pip messing with pacman managed files. www.msys2.org/news/#2026-0...

msys2.org

MSYS2 - News

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MSYS2 @msys2org.bsky.social · 14/01/2026

We have updated to Python 3.13, see www.msys2.org/news/#2026-0... for more details

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MSYS2 @msys2org.bsky.social · 25/12/2025

To mix things up, here are the Python build backends used

# Python Build Backend Usage

- **flit-core**: 71
- **flit-scm**: 1
- **hatchling**: 105
- **maturin**: 13
- **meson-python**: 9
- **pdm-backend**: 11
- **poetry-core**: 39
- **setuptools**: 710
- **setuptools-rust**: 4
- **uv-build**: 1

MSYS2 @msys2org.bsky.social · 25/12/2025

I know it's getting boring, but here are the 2025 build system stats

# Build System Usage by Year

- **2021**
- autotools: 513
- meson: 117
- cmake: 423

- **2022**
- autotools: 505
- meson: 145
- cmake: 587

- **2023**
- autotools: 504
- meson: 167
- cmake: 659

- **2024**
- autotools: 545
- meson: 198
- cmake: 841

- **2025**
- autotools: 550
- meson: 216
- cmake: 944

MSYS2 @msys2org.bsky.social · 30/09/2025

Martin Storsjö at WineConf 2025 about the history and development of the llvm-mingw toolchain (github.com/mstorsjo/llv...), which is the basis for the CLANG64/CLANGARM64 environments in MSYS2. The slides are linked in the video description. www.youtube.com/watch?v=NpxO...

youtube.com

WineConf 2025 - llvm-mingw: How to QA a toolchain on a zero budget – Martin Storsjö

YouTube video by WineHQ

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MSYS2 @msys2org.bsky.social · 21/09/2025

We've upgraded to LLVM/Clang 21. See releases.llvm.org/21.1.0/tools... and releases.llvm.org/21.1.0/docs/... for the release notes

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MSYS2 @msys2org.bsky.social · 07/09/2025

Some new packages (3/3): We have updated to fish v4. fish is our first cygwin package in the repo that is written in rust (!!). fishshell.com

screenshot of showing fish in a terminal. first the version, then an an example for auto completing git

MSYS2 @msys2org.bsky.social · 07/09/2025

Some new packages (2/3): We have updated to ffmpeg 8.0 with the new vulkan decoders/filters enabled. ffmpeg.org/index.html#n...

MSYS2 @msys2org.bsky.social · 07/09/2025

Some new packages (1/3): mGBA (Game Boy Advance emulator) mgba.io

MSYS2 @msys2org.bsky.social · 17/07/2025

There was a lightning talk (in German) about MSYS2 at the Grazer Linuxtage #glt25: media.ccc.de/v/glt25-491-...

MSYS2 @msys2org.bsky.social · 14/07/2025

Oh, and I forgot to post: We replaced the "x86_64-pc-msys" triplet with "x86_64-pc-cygwin". For more details, see the MSYS2 news entry: www.msys2.org/news/#2025-0...

MSYS2 @msys2org.bsky.social · 14/07/2025

Some notable additions in the last few weeks (2/2): • libfido2 (FIDO2 client library) • squashfs-tools (work with Squashfs filesystems) • samply (Command-line sampling profiler) • libmem (Advanced Game Hacking Library) • accesskit-c (Accessibility backend for GTK4)

MSYS2 @msys2org.bsky.social · 14/07/2025

Some notable additions in the last few weeks (1/2): • cygwin curl gained http3 support • dxvk (Vulkan-based D3D shim) • koboldcpp (llama.cpp based KoboldAI UI) • SBCL (Common Lisp implementation) • zlib-ng (high-perf zlib replacement)

MSYS2 @msys2org.bsky.social · 27/04/2025

GCC 15.1 is out and in our repos. See gcc.gnu.org/gcc-15/chang... for changes, and gcc.gnu.org/gcc-15/porti... for porting guidelines.

MSYS2 @msys2org.bsky.social · 19/04/2025

Getting ready for GCC 15 next week 😊

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MSYS2 @msys2org.bsky.social · 18/04/2025

With us moving to the new hosted ARM64 runners, a look back at our self-hosted ARM64 runner journey: www.msys2.org/news/#2025-0...

GitHub Actions dashboard showing 100,031 total minutes and 6,003 job runs over the past year. The main workflow "build.yml" used 95,577 minutes across 1,835 runs on a self-hosted Windows runner.

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MSYS2 @msys2org.bsky.social · 16/04/2025

Native Windows ARM64 runners are now available on GitHub Actions. Just use "runs-on: windows-11-arm" and the setup-msys2 action with "msystem: CLANGARM64" to start building/testing. >90% of MSYS2 packages are available for ARM64, so everything should be good to go.

An example screenshot of the GitHub Actions arm64 job output

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MSYS2 @msys2org.bsky.social · 07/03/2025

We've upgraded to LLVM/Clang 20. See releases.llvm.org/20.1.0/tools... and releases.llvm.org/20.1.0/docs/... for the release notes

terminal showing the output of "clang --version"

MSYS2 @msys2org.bsky.social · 14/02/2025

We are moving our MSYS environment closer to Cygwin, see www.msys2.org/news/#2025-0... for details

user@desktop MSYS ~
$ python -c "import sys; print(sys. platform, end='')"
cygwin
user@desktop MSYS ~
$ perl -e "print $^0"
cygwin
user@desktop MSYS ~
$ echo -n $OSTYPE
cygwin
user@desktop MSYS ~

MSYS2 @msys2org.bsky.social · 14/02/2025

There will be a short server maintenance tomorrow 🤞 www.msys2.org/news/#2025-0...

MSYS2 @msys2org.bsky.social · 22/12/2024

It's December, so it's time for our annual build system battle!

- Autotools: [2021] 513, [2022] 505, [2023] 504, [2024] 545
- Meson: [2021] 117, [2022] 145, [2023] 167, [2024] 198
- CMake: [2021] 423, [2022] 587, [2023] 659, [2024] 841

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Reposted by MSYS2

gitforwindows.org @gitforwindows.org · 25/11/2024

Say hi to the first ever Git for Windows version that adds native support for Windows/ARM64! github.com/git-for-wind...

github.com

Releases · git-for-windows/git

A fork of Git containing Windows-specific patches. - git-for-windows/git

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MSYS2 @msys2org.bsky.social · 20/11/2024

The change is included in Cygwin upstream too now.