unsloth/.github/workflows/studio-windows-update-smoke.yml

# SPDX-License-Identifier: AGPL-3.0-only
# Copyright 2026-present the Unsloth AI Inc. team. All rights reserved.

# Windows counterpart to studio-update-smoke.yml /
# studio-mac-update-smoke.yml. Verifies that on the FREE
# windows-latest runner:
#
#   1. install.ps1 --local --no-torch installs Studio AND auto-fetches
#      the prebuilt llama.cpp Windows binary (llama-bNNNN-bin-win-cpu-
#      x64 from ggml-org/llama.cpp). Hitting the source-build fallback
#      is treated as an Unsloth bug -- Studio must always pick the
#      prebuilt on Windows.
#   2. unsloth studio update --local is idempotent. Two consecutive
#      runs both report "prebuilt up to date and validated", no
#      source-build fallback. The CLI's _find_setup_script picks
#      setup.ps1 on Windows automatically.
#   3. The installed Studio still boots and /api/health returns
#      healthy after the update path.

name: Windows Studio Update CI

on:
  pull_request:
    paths:
      - 'install.ps1'
      - 'studio/setup.ps1'
      - 'studio/setup.bat'
      - 'studio/install_python_stack.py'
      - 'studio/install_llama_prebuilt.py'
      - 'studio/backend/requirements/**'
      - 'unsloth_cli/commands/studio.py'
      - 'pyproject.toml'
      - '.github/workflows/studio-windows-update-smoke.yml'
  push:
    branches: [main, pip]
  workflow_dispatch:

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

permissions:
  contents: read

jobs:
  update-idempotency:
    name: Studio Updating Tests
    runs-on: windows-latest
    timeout-minutes: 30
    defaults:
      run:
        shell: bash
    env:
      # Force UTF-8 for stdio (Windows defaults to cp1252; hf
      # download / Studio CLI print "✓" checkmarks and crash
      # otherwise).
      PYTHONIOENCODING: utf-8
      PYTHONUTF8: '1'
    steps:
      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4.3.1

      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020  # v4.4.0
        with:
          node-version: '22'
          cache: 'npm'
          cache-dependency-path: studio/frontend/package-lock.json

      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065  # v5.6.0
        with:
          python-version: '3.12'
          # Don't cache pip: install.ps1 + setup.ps1 go through uv
          # and never populate ~/.cache/pip; setup-python's post-step
          # then fatal-errors with "Cache folder path is retrieved
          # for pip but doesn't exist on disk".

      - name: Install Studio (--local, --no-torch)
        shell: pwsh
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          New-Item -ItemType Directory -Force -Path logs | Out-Null
          & ./install.ps1 --local --no-torch 2>&1 | Tee-Object -FilePath logs/install.log

      - name: Assert install.ps1 used the Windows llama.cpp prebuilt
        run: |
          if grep -q "falling back to source build" logs/install.log; then
            echo "::error::install.ps1 fell back to source-build llama.cpp on Windows. Studio must install the prebuilt llama-bNNNN-bin-win-cpu-x64 on Windows."
            grep -E "llama-prebuilt|llama.cpp" logs/install.log | tail -60
            exit 1
          fi
          if ! grep -qE "prebuilt installed and validated|prebuilt up to date and validated|bin-win-cpu-x64|bin-win-cuda-" logs/install.log; then
            echo "::error::no Windows prebuilt llama.cpp marker in install.log."
            grep -E "llama-prebuilt|llama.cpp" logs/install.log | tail -60
            exit 1
          fi
          echo "install.ps1 installed the Windows prebuilt llama.cpp"

      - name: First update should be a no-op (prebuilt already validated)
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          set -o pipefail
          unsloth studio update --local 2>&1 | tee logs/update.log
          if grep -q "falling back to source build" logs/update.log; then
            echo "::error::studio update fell back to source-build llama.cpp on Windows."
            grep -E "llama-prebuilt|llama.cpp" logs/update.log | tail -60
            exit 1
          fi
          if ! grep -qE "prebuilt up to date and validated|prebuilt installed and validated" logs/update.log; then
            echo "::error::no prebuilt up-to-date marker in update.log."
            grep -E "llama-prebuilt|llama.cpp" logs/update.log | tail -60
            exit 1
          fi
          echo "update path took the prebuilt fast path"

      - name: Second update must also be a no-op
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          set -o pipefail
          unsloth studio update --local 2>&1 | tee logs/update2.log
          grep -q "falling back to source build" logs/update2.log && {
              echo "::error::second update fell back to source build on Windows"
              tail -60 logs/update2.log; exit 1; } || true
          grep -qE "prebuilt up to date and validated|prebuilt installed and validated" logs/update2.log
          echo "second update was clean"

      - name: Boot Studio briefly to confirm the install is still usable
        run: |
          mkdir -p logs
          UNSLOTH_API_ONLY=1 unsloth studio -H 127.0.0.1 -p 18891 \
            > logs/studio.log 2>&1 &
          PID=$!
          HEALTHY=""
          for i in $(seq 1 60); do
            if curl -fs http://127.0.0.1:18891/api/health > /tmp/health.json; then
              if python -c "import json,sys; d=json.load(open('/tmp/health.json')); sys.exit(0 if d.get('status')=='healthy' else 1)"; then
                HEALTHY=1
                break
              fi
            fi
            sleep 1
          done
          if [ -z "$HEALTHY" ]; then
            echo "Studio failed to come up after \`update\`"
            tail -200 logs/studio.log
            kill "$PID" 2>/dev/null || true
            exit 1
          fi
          kill "$PID" 2>/dev/null || true
          echo "post-update Studio /api/health OK"

      - name: Upload update logs
        if: always()
        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02  # v4.6.2
        with:
          name: windows-studio-update-log
          path: |
            logs/install.log
            logs/update.log
            logs/update2.log
            logs/studio.log
          retention-days: 7