vpython: Leave "pip" and related tools.

vpython/venv/venv_resources_test.go

 // Copyright 2017 The LUCI Authors. All rights reserved.
 // Use of this source code is governed under the Apache License, Version 2.0
 // that can be found in the LICENSE file.
 
 package venv
 
 import (
         "archive/zip"
         "crypto/sha256"
         "encoding/hex"
@@ skipping 186 matching lines @@
                 BaseDir:    filepath.Join(outDir, ".env"),
                 Python:     py.Python,
                 Package: vpython.Spec_Package{
                         Name:    "foo/bar/virtualenv",
                         Version: "whatever",
                 },
                 Loader: tl,
                 Spec:   &vpython.Spec{},
 
                 // Testing parameters for this bootstrap wheel-building environment.
-                testPreserveInstallationCapability: true,
-                testLeaveReadWrite:                 true,
+                testLeaveReadWrite: true,
         }
 
         // Build the wheel in a temporary directory, then copy it into outDir. This
         // will stop wheel builds from stepping on each other or inheriting each
         // others' state accidentally.
         err = testfs.WithTempDir(t, "vpython_venv_wheel", func(tdir string) error {
                 buildDir := filepath.Join(tdir, "build")
                 if err := filesystem.MakeDirs(buildDir); err != nil {
                         return err
                 }
@@ skipping 252 matching lines @@
         if _, err := io.Copy(dfd, sfd); err != nil {
                 return errors.Annotate(err).Reason("failed to copy file").Err()
         }
         if fi != nil {
                 if err := os.Chmod(dst, fi.Mode()); err != nil {
                         return errors.Annotate(err).Reason("failed to chmod").Err()
                 }
         }
         return nil
 }