0.12.15

## Release Notes

Released on 2026-09-15.

### Performance

- Speed up cold-cache resolution and HTTP cache revalidation by batching cache writes ([#21675](https://github.com/astral-sh/uv/pull/21675))

### Bug fixes

- Fix regressions in `0.12.14` when installing to symlinked destinations or using `uv pip install --target .` ([#21699](https://github.com/astral-sh/uv/pull/21699))

## Install uv 0.12.15

### Install prebuilt binaries via shell script

```sh
curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-installer.sh | sh
```

### Install prebuilt binaries via powershell script

```sh
powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-installer.ps1 | iex"
```

## Download uv 0.12.15

|  File  | Platform | Checksum |
|--------|----------|----------|
| [uv-aarch64-apple-darwin.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-aarch64-apple-darwin.tar.gz) | Apple Silicon macOS | [checksum](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-aarch64-apple-darwin.tar.gz.sha256) |
| [uv-x86_64-apple-darwin.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-x86_64-apple-darwin.tar.gz) | Intel macOS | [checksum](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-x86_64-apple-darwin.tar.gz.sha256) |
| [uv-aarch64-pc-windows-msvc.zip](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-aarch64-pc-windows-msvc.zip) | ARM64 Windows | [checksum](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-aarch64-pc-windows-msvc.zip.sha256) |
| [uv-i686-pc-windows-msvc.zip](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-i686-pc-windows-msvc.zip) | x86 Windows | [checksum](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-i686-pc-windows-msvc.zip.sha256) |
| [uv-x86_64-pc-windows-msvc.zip](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-x86_64-pc-windows-msvc.zip) | x64 Windows | [checksum](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-x86_64-pc-windows-msvc.zip.sha256) |
| [uv-aarch64-unknown-linux-gnu.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-aarch64-unknown-linux-gnu.tar.gz) | ARM64 Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-aarch64-unknown-linux-gnu.tar.gz.sha256) |
| [uv-i686-unknown-linux-gnu.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-i686-unknown-linux-gnu.tar.gz) | x86 Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-i686-unknown-linux-gnu.tar.gz.sha256) |
| [uv-powerpc64le-unknown-linux-gnu.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-powerpc64le-unknown-linux-gnu.tar.gz) | PPC64LE Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-powerpc64le-unknown-linux-gnu.tar.gz.sha256) |
| [uv-riscv64gc-unknown-linux-gnu.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-riscv64gc-unknown-linux-gnu.tar.gz) | RISCV Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-riscv64gc-unknown-linux-gnu.tar.gz.sha256) |
| [uv-s390x-unknown-linux-gnu.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-s390x-unknown-linux-gnu.tar.gz) | S390x Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-s390x-unknown-linux-gnu.tar.gz.sha256) |
| [uv-x86_64-unknown-linux-gnu.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-x86_64-unknown-linux-gnu.tar.gz) | x64 Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-x86_64-unknown-linux-gnu.tar.gz.sha256) |
| [uv-armv7-unknown-linux-gnueabihf.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-armv7-unknown-linux-gnueabihf.tar.gz) | ARMv7 Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-armv7-unknown-linux-gnueabihf.tar.gz.sha256) |
| [uv-aarch64-unknown-linux-musl.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-aarch64-unknown-linux-musl.tar.gz) | ARM64 MUSL Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-aarch64-unknown-linux-musl.tar.gz.sha256) |
| [uv-i686-unknown-linux-musl.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-i686-unknown-linux-musl.tar.gz) | x86 MUSL Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-i686-unknown-linux-musl.tar.gz.sha256) |
| [uv-riscv64gc-unknown-linux-musl.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-riscv64gc-unknown-linux-musl.tar.gz) | RISCV MUSL Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-riscv64gc-unknown-linux-musl.tar.gz.sha256) |
| [uv-x86_64-unknown-linux-musl.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-x86_64-unknown-linux-musl.tar.gz) | x64 MUSL Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-x86_64-unknown-linux-musl.tar.gz.sha256) |
| [uv-arm-unknown-linux-musleabihf.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-arm-unknown-linux-musleabihf.tar.gz) | ARMv6 MUSL Linux (Hardfloat) | [checksum](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-arm-unknown-linux-musleabihf.tar.gz.sha256) |
| [uv-armv7-unknown-linux-musleabihf.tar.gz](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-armv7-unknown-linux-musleabihf.tar.gz) | ARMv7 MUSL Linux | [checksum](https://releases.astral.sh/github/uv/releases/download/0.12.15/uv-armv7-unknown-linux-musleabihf.tar.gz.sha256) |

## Verifying GitHub Artifact Attestations

The artifacts in this release have attestations generated with GitHub Artifact Attestations. These can be verified by using the [GitHub CLI](https://cli.github.com/manual/gh_attestation_verify):
```sh
gh attestation verify <file-path of downloaded artifact> --repo astral-sh/uv
```

You can also download the attestation from [GitHub](https://github.com/astral-sh/uv/attestations) and verify against that directly:
```sh
gh attestation verify <file-path of downloaded artifact> --bundle <file-path of downloaded attestation>
```