/// <summary>
/// Installs virtualenv. If pip is not installed, the returned task will
/// succeed but error text will be passed to the redirector.
/// </summary>
public static Task<bool> Install(IServiceProvider provider, IPythonInterpreterFactory factory) {
var ui = new VsPackageManagerUI(provider);
if (factory.Configuration.Version < new Version(2, 5)) {
ui.OnErrorTextReceived(null, "Python versions earlier than 2.5 are not supported by PTVS.\n");
throw new OperationCanceledException();
} else if (factory.PackageManager == null) {
ui.OnErrorTextReceived(null, Strings.PackageManagementNotSupported_Package.FormatUI("virtualenv"));
throw new OperationCanceledException();
} else if (factory.Configuration.Version == new Version(2, 5)) {
return factory.PackageManager.InstallAsync(PackageSpec.FromArguments("https://go.microsoft.com/fwlink/?LinkID=317970"), ui, CancellationToken.None);
} else {
return factory.PackageManager.InstallAsync(PackageSpec.FromArguments("https://go.microsoft.com/fwlink/?LinkID=317969"), ui, CancellationToken.None);
}
}
/// <summary>
/// Creates a virtual environment. If virtualenv or pip are not
/// installed then they are downloaded and installed automatically.
/// </summary>
public static async Task CreateAndInstallDependencies(
IServiceProvider provider,
IPythonInterpreterFactory factory,
string path
) {
factory.ThrowIfNotRunnable("factory");
var cancel = CancellationToken.None;
var ui = new VsPackageManagerUI(provider);
var pm = factory.PackageManager;
if (pm == null) {
throw new InvalidOperationException(Strings.PackageManagementNotSupported);
}
if (!pm.IsReady) {
await pm.PrepareAsync(ui, cancel);
if (!pm.IsReady) {
throw new InvalidOperationException(Strings.VirtualEnvCreationFailed.FormatUI(path));
}
}
var modules = await factory.FindModulesAsync("virtualenv", "venv");
bool hasVirtualEnv = modules.Contains("virtualenv") || modules.Contains("venv");
if (!hasVirtualEnv) {
if (!await Install(provider, factory)) {
throw new InvalidOperationException(Strings.VirtualEnvCreationFailed.FormatUI(path));
}
}
await ContinueCreate(provider, factory, path, false, PackageManagerUIRedirector.Get(pm, ui));
}