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41c7c1136c
Mothblocks forgot to update the bootstrap script to the new python version when they changed the python dependency version That path descriptor file is now automatically generated during bootstrap, which will prevent this issue from happening again in the future, unless they change the path descriptor format
109 lines
3.7 KiB
PowerShell
109 lines
3.7 KiB
PowerShell
# bootstrap/python_.ps1
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#
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# Python bootstrapping script for Windows.
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#
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# Automatically downloads a portable edition of a pinned Python version to
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# a cache directory, installs Pip, installs `requirements.txt`, and then invokes
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# Python.
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#
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# The underscore in the name is so that typing `bootstrap/python` into
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# PowerShell finds the `.bat` file first, which ensures this script executes
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# regardless of ExecutionPolicy.
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$host.ui.RawUI.WindowTitle = "starting :: python $args"
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$ErrorActionPreference = "Stop"
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[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
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Add-Type -AssemblyName System.IO.Compression.FileSystem
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function ExtractVersion {
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param([string] $Path, [string] $Key)
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foreach ($Line in Get-Content $Path) {
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if ($Line.StartsWith("export $Key=")) {
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return $Line.Substring("export $Key=".Length)
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}
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}
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throw "Couldn't find value for $Key in $Path"
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}
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# Convenience variables
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$Bootstrap = Split-Path $script:MyInvocation.MyCommand.Path
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$Tools = Split-Path $Bootstrap
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$Cache = "$Bootstrap/.cache"
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if ($Env:TG_BOOTSTRAP_CACHE) {
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$Cache = $Env:TG_BOOTSTRAP_CACHE
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}
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$PythonVersion = ExtractVersion -Path "$Bootstrap/../../dependencies.sh" -Key "PYTHON_VERSION"
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$PythonDir = "$Cache/python-$PythonVersion"
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$PythonExe = "$PythonDir/python.exe"
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$Log = "$Cache/last-command.log"
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# Download and unzip a portable version of Python
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if (!(Test-Path $PythonExe -PathType Leaf)) {
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$host.ui.RawUI.WindowTitle = "Downloading Python $PythonVersion..."
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New-Item $Cache -ItemType Directory -ErrorAction silentlyContinue | Out-Null
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$Archive = "$Cache/python-$PythonVersion-embed.zip"
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Invoke-WebRequest `
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"https://www.python.org/ftp/python/$PythonVersion/python-$PythonVersion-embed-amd64.zip" `
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-OutFile $Archive `
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-ErrorAction Stop
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[System.IO.Compression.ZipFile]::ExtractToDirectory($Archive, $PythonDir)
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$PythonVersionArray = $PythonVersion.Split(".")
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$PythonVersionString = "python$($PythonVersionArray[0])$($PythonVersionArray[1])"
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Write-Output "Generating PATH descriptor."
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New-Item "$Cache/$PythonVersionString._pth" | Out-Null
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Set-Content "$Cache/$PythonVersionString._pth" "$PythonVersionString.zip`n.`n..\..\..`nimport site`n"
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# Copy a ._pth file without "import site" commented, so pip will work
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Copy-Item "$Cache/$PythonVersionString._pth" $PythonDir `
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-ErrorAction Stop
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Remove-Item $Archive
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}
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# Install pip
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if (!(Test-Path "$PythonDir/Scripts/pip.exe")) {
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$host.ui.RawUI.WindowTitle = "Downloading Pip..."
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Invoke-WebRequest "https://bootstrap.pypa.io/get-pip.py" `
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-OutFile "$Cache/get-pip.py" `
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-ErrorAction Stop
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& $PythonExe "$Cache/get-pip.py" --no-warn-script-location
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if ($LASTEXITCODE -ne 0) {
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exit $LASTEXITCODE
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}
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Remove-Item "$Cache/get-pip.py" `
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-ErrorAction Stop
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}
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# Use pip to install our requirements
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if (!(Test-Path "$PythonDir/requirements.txt") -or ((Get-FileHash "$Tools/requirements.txt").hash -ne (Get-FileHash "$PythonDir/requirements.txt").hash)) {
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$host.ui.RawUI.WindowTitle = "Updating dependencies..."
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& $PythonExe -m pip install -U pip -r "$Tools/requirements.txt"
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if ($LASTEXITCODE -ne 0) {
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exit $LASTEXITCODE
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}
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Copy-Item "$Tools/requirements.txt" "$PythonDir/requirements.txt"
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Write-Output "`n---`n"
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}
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# Invoke python with all command-line arguments
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Write-Output $PythonExe | Out-File -Encoding utf8 $Log
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[System.String]::Join([System.Environment]::NewLine, $args) | Out-File -Encoding utf8 -Append $Log
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Write-Output "---" | Out-File -Encoding utf8 -Append $Log
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$host.ui.RawUI.WindowTitle = "python $args"
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$ErrorActionPreference = "Continue"
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& $PythonExe -u $args 2>&1 | ForEach-Object {
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$str = "$_"
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if ($_.GetType() -eq [System.Management.Automation.ErrorRecord]) {
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$str = $str.TrimEnd("`r`n")
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}
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$str | Out-File -Encoding utf8 -Append $Log
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$str | Out-Host
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}
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exit $LastExitCode
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