# Sample script to install Miniconda under Windows # Authors: Olivier Grisel, Jonathan Helmus and Kyle Kastner, Robert McGibbon # License: CC0 1.0 Universal: http://creativecommons.org/publicdomain/zero/1.0/ $MINICONDA_URL = "http://repo.continuum.io/miniconda/" function DownloadMiniconda ($python_version, $platform_suffix) { $webclient = New-Object System.Net.WebClient $filename = "Miniconda3-latest-Windows-" + $platform_suffix + ".exe" $url = $MINICONDA_URL + $filename $basedir = $pwd.Path + "\" $filepath = $basedir + $filename if (Test-Path $filename) { Write-Host "Reusing" $filepath return $filepath } # Download and retry up to 3 times in case of network transient errors. Write-Host "Downloading" $filename "from" $url $retry_attempts = 2 for($i=0; $i -lt $retry_attempts; $i++){ try { $webclient.DownloadFile($url, $filepath) break } Catch [Exception]{ Start-Sleep 1 } } if (Test-Path $filepath) { Write-Host "File saved at" $filepath } else { # Retry once to get the error message if any at the last try $webclient.DownloadFile($url, $filepath) } return $filepath } function InstallMiniconda ($python_version, $architecture, $python_home) { Write-Host "Installing Python" $python_version "for" $architecture "bit architecture to" $python_home if (Test-Path $python_home) { Write-Host $python_home "already exists, skipping." return $false } if ($architecture -match "32") { $platform_suffix = "x86" } else { $platform_suffix = "x86_64" } $filepath = DownloadMiniconda $python_version $platform_suffix Write-Host "Installing" $filepath "to" $python_home $install_log = $python_home + ".log" $args = "/S /D=$python_home" Write-Host $filepath $args Start-Process -FilePath $filepath -ArgumentList $args -Wait -Passthru if (Test-Path $python_home) { Write-Host "Python $python_version ($architecture) installation complete" } else { Write-Host "Failed to install Python in $python_home" Get-Content -Path $install_log Exit 1 } } function InstallCondaPackages ($python_home, $spec) { $conda_path = $python_home + "\Scripts\conda.exe" $args = "install --yes " + $spec Write-Host ("conda " + $args) Start-Process -FilePath "$conda_path" -ArgumentList $args -Wait -Passthru } function UpdateConda ($python_home) { $conda_path = $python_home + "\Scripts\conda.exe" Write-Host "Updating conda..." $args = "update --yes conda" Write-Host $conda_path $args Start-Process -FilePath "$conda_path" -ArgumentList $args -Wait -Passthru } function main () { InstallMiniconda $env:PYTHON_VERSION $env:PYTHON_ARCH $env:PYTHON UpdateConda $env:PYTHON InstallCondaPackages $env:PYTHON "conda-build jinja2 anaconda-client" } main