From e06f2dcf6afbe4ec61c880dc935de446c42d064b Mon Sep 17 00:00:00 2001
From: Glenn Jocher <glenn.jocher@ultralytics.com>
Date: Fri, 17 Jul 2026 12:15:22 +0200
Subject: [PATCH] Support retried uv setup on Windows (#819)

---
 .github/workflows/ci.yml | 12 ++++++++++++
 README.md                |  2 +-
 actions/__init__.py      |  2 +-
 setup-uv/README.md       |  2 +-
 setup-uv/action.yml      | 31 +++++++++++++++++--------------
 5 files changed, 32 insertions(+), 17 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b2a9b39..49f185a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,6 +17,18 @@ permissions:
   id-token: write # Required for Codecov OIDC uploads
 
 jobs:
+  Setup-uv-Windows:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v7
+      - uses: ./setup-uv
+        with:
+          python-version: "3.14"
+          activate-environment: true
+      - run: |
+          uv --version
+          python -c "import os, sys; assert sys.version_info[:2] == (3, 14); assert os.environ['VIRTUAL_ENV'].endswith(r'\.venv')"
+
   Test:
     runs-on: ${{ matrix.os }}
     strategy:
diff --git a/README.md b/README.md
index e4d38c0..0c6a4f1 100644
--- a/README.md
+++ b/README.md
@@ -186,7 +186,7 @@ Check every pull request commit author against the central Ultralytics CLA signa
 
 ### 6. Setup uv Action
 
-Install the latest uv with retry support on Linux and macOS and optionally activate a Python environment.
+Install the latest uv with retry support and optionally activate a Python environment.
 
 ```yaml
 - uses: ultralytics/actions/setup-uv@main
diff --git a/actions/__init__.py b/actions/__init__.py
index eaff5ae..779099e 100644
--- a/actions/__init__.py
+++ b/actions/__init__.py
@@ -28,4 +28,4 @@
 #     ├── test_summarize_pr.py
 #     └── ...
 
-__version__ = "0.2.27"
+__version__ = "0.2.28"
diff --git a/setup-uv/README.md b/setup-uv/README.md
index 6b04de0..53950a3 100644
--- a/setup-uv/README.md
+++ b/setup-uv/README.md
@@ -1,6 +1,6 @@
 # Setup uv Action
 
-Installs the latest [uv](https://docs.astral.sh/uv/) release with retry support on Linux and macOS and optionally activates a Python virtual environment.
+Installs the latest [uv](https://docs.astral.sh/uv/) release with retry support and optionally activates a Python virtual environment.
 
 ## Usage
 
diff --git a/setup-uv/action.yml b/setup-uv/action.yml
index d7ad321..802d1b8 100644
--- a/setup-uv/action.yml
+++ b/setup-uv/action.yml
@@ -1,7 +1,7 @@
 # Ultralytics 🚀 AGPL-3.0 License - https://ultralytics.com/license
 
 name: "Setup uv"
-description: "Install the latest uv with retry on Linux and macOS and optionally activate a Python environment"
+description: "Install the latest uv with retry and optionally activate a Python environment"
 inputs:
   python-version:
     description: "Python version for uv commands"
@@ -15,21 +15,18 @@ inputs:
 runs:
   using: "composite"
   steps:
-    - name: Validate platform
-      shell: bash
-      run: |
-        if [ "$RUNNER_OS" = "Windows" ]; then
-          echo "::error::setup-uv supports Linux and macOS runners"
-          exit 1
-        fi
-
     - name: Install uv
-      uses: ultralytics/actions/retry@main
+      uses: ultralytics/actions/retry@a9e123c43a227f70901da045ca6ef1c08c6bb39d
       with:
         run: |
           set -o pipefail
-          curl -LsSf https://astral.sh/uv/install.sh | env UV_UNMANAGED_INSTALL="$RUNNER_TEMP/uv-bin" sh
-          echo "$RUNNER_TEMP/uv-bin" >> "$GITHUB_PATH"
+          if [ "$RUNNER_OS" = "Windows" ]; then
+            powershell -NoProfile -ExecutionPolicy Bypass -Command '$env:UV_UNMANAGED_INSTALL = $env:RUNNER_TEMP + "\uv-bin"; irm https://astral.sh/uv/install.ps1 | iex'
+            echo "$RUNNER_TEMP\uv-bin" >> "$GITHUB_PATH"
+          else
+            curl -LsSf https://astral.sh/uv/install.sh | env UV_UNMANAGED_INSTALL="$RUNNER_TEMP/uv-bin" sh
+            echo "$RUNNER_TEMP/uv-bin" >> "$GITHUB_PATH"
+          fi
 
     - name: Configure environment
       shell: bash
@@ -43,6 +40,12 @@ runs:
         fi
         if [ "$ACTIVATE_ENVIRONMENT" = "true" ]; then
           uv venv --clear
-          echo "VIRTUAL_ENV=$PWD/.venv" >> "$GITHUB_ENV"
-          echo "$PWD/.venv/bin" >> "$GITHUB_PATH"
+          if [ "$RUNNER_OS" = "Windows" ]; then
+            venv_path=$(cygpath -w "$PWD/.venv")
+            echo "VIRTUAL_ENV=$venv_path" >> "$GITHUB_ENV"
+            echo "$venv_path\Scripts" >> "$GITHUB_PATH"
+          else
+            echo "VIRTUAL_ENV=$PWD/.venv" >> "$GITHUB_ENV"
+            echo "$PWD/.venv/bin" >> "$GITHUB_PATH"
+          fi
         fi