CI(windows): per-user Python install + robust python.exe path lookup
The installer's InstallAllUsers=1 needs admin (runner service isn't elevated) so Python landed in the per-user LOCALAPPDATA dir, not C:\Program Files; the hardcoded PATH prepend missed it -> 'python not recognized'. Switch to a per-user install and locate python.exe across the known dirs. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016yT89n4zR4qbrySoSiEyZs
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@@ -18,11 +18,17 @@ jobs:
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run: |
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run: |
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$ErrorActionPreference = "Stop"
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$ErrorActionPreference = "Stop"
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if (-not (Get-Command python -ErrorAction SilentlyContinue)) {
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if (-not (Get-Command python -ErrorAction SilentlyContinue)) {
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Write-Host "Python not found; installing 3.12..."
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Write-Host "Python not found; installing 3.12 (per-user, no admin needed)..."
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$url = "https://www.python.org/ftp/python/3.12.7/python-3.12.7-amd64.exe"
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$url = "https://www.python.org/ftp/python/3.12.7/python-3.12.7-amd64.exe"
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Invoke-WebRequest -Uri $url -OutFile "$env:TEMP\py.exe"
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Invoke-WebRequest -Uri $url -OutFile "$env:TEMP\py.exe"
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Start-Process -Wait -FilePath "$env:TEMP\py.exe" -ArgumentList "/quiet","InstallAllUsers=1","PrependPath=1","Include_test=0"
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Start-Process -Wait -FilePath "$env:TEMP\py.exe" -ArgumentList "/quiet","PrependPath=1","Include_test=0"
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$env:Path = "C:\Program Files\Python312;C:\Program Files\Python312\Scripts;$env:Path"
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$base = @(
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"$env:LOCALAPPDATA\Programs\Python\Python312",
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"C:\Program Files\Python312",
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"C:\Python312"
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) | Where-Object { Test-Path "$_\python.exe" } | Select-Object -First 1
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if (-not $base) { throw "Python install did not produce python.exe in a known location" }
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$env:Path = "$base;$base\Scripts;$env:Path"
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}
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}
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python --version
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python --version
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python -m pip install --upgrade pip
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python -m pip install --upgrade pip
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