Providers are responsible for selecting tools

provider/azure/environ.go

 // Copyright 2013 Canonical Ltd.
 // Licensed under the AGPLv3, see LICENCE file for details.
 
 package azure
 
 import (
         "fmt"
         "net/http"
         "sync"
         "time"
@@ skipping 227 matching lines @@
         return azure.RemoveVirtualNetworkSite(vnetName)
 }
 
 // getContainerName returns the name of the private storage account container
 // that this environment is using.
 func (env *azureEnviron) getContainerName() string {
         return env.getEnvPrefix() + "private"
 }
 
 // Bootstrap is specified in the Environ interface.
-func (env *azureEnviron) Bootstrap(cons constraints.Value, possibleTools tools.List) (err error) {
+func (env *azureEnviron) Bootstrap(cons constraints.Value) (err error) {
         // The creation of the affinity group and the virtual network is specific to the Azure provider.
         err = env.createAffinityGroup()
         if err != nil {
                 return err
         }
         // If we fail after this point, clean up the affinity group.
         defer func() {
                 if err != nil {
                         env.deleteAffinityGroup()
                 }
         }()
         err = env.createVirtualNetwork()
         if err != nil {
                 return err
         }
         // If we fail after this point, clean up the virtual network.
         defer func() {
                 if err != nil {
                         env.deleteVirtualNetwork()
                 }
         }()
-        err = common.Bootstrap(env, cons, possibleTools)
+        err = common.Bootstrap(env, cons)
         return err
 }
 
 // StateInfo is specified in the Environ interface.
 func (env *azureEnviron) StateInfo() (*state.Info, *api.Info, error) {
         return common.StateInfo(env)
 }
 
 // Config is specified in the Environ interface.
 func (env *azureEnviron) Config() *config.Config {
@@ skipping 662 matching lines @@
 }
 
 // Region is specified in the HasRegion interface.
 func (env *azureEnviron) Region() (simplestreams.CloudSpec, error) {
         ecfg := env.getSnapshot().ecfg
         return simplestreams.CloudSpec{
                 Region:   ecfg.location(),
                 Endpoint: string(gwacl.GetEndpoint(ecfg.location())),
         }, nil
 }