Minor changes/bugfixes on md5/checksum PR

lib/spack/spack/cmd/checksum.py

@@ -56,8 +56,7 @@ def get_checksums(versions, urls, **kwargs):
     i = 0
     for url, version in zip(urls, versions):
         try:
-            with Stage(url) as stage:
-                stage.delete_on_exit = not keep_stage
+            with Stage(url, keep=keep_stage) as stage:
                 stage.fetch()
                 if i == 0 and first_stage_function:
                     first_stage_function(stage)
@@ -96,7 +95,7 @@ def checksum(parser, args):
     tty.msg("Found %s versions of %s" % (len(versions), pkg.name),
             *spack.cmd.elide_list(
                 ["%-10s%s" % (v, versions[v]) for v in sorted_versions]))
-    print()
+    print
     archives_to_fetch = tty.get_number(
         "How many would you like to checksum?", default=5, abort='q')
 

lib/spack/spack/cmd/md5.py

@@ -67,6 +67,6 @@ def md5(parser, args):
             tty.warn("%s" % e)
 
     # Dump the MD5s at last without interleaving them with downloads
-    tty.msg("Number of MD5 check-sums computed: %s " % len(results))
+    tty.msg("%d MD5 checksums:" % len(results))
     for checksum, url in results:
-        tty.msg("%s  %s" % (checksum, url))
+        print "%s  %s" % (checksum, url)

lib/spack/spack/cmd/stage.py

@@ -50,6 +50,4 @@ def stage(parser, args):
     specs = spack.cmd.parse_specs(args.specs, concretize=True)
     for spec in specs:
         package = spack.repo.get(spec)
-        with package.stage as stage:
-            stage.delete_on_exit = False
-            package.do_stage()
+        package.do_stage()

lib/spack/spack/stage.py

@@ -441,7 +441,7 @@ def __enter__(self):
 
     def __exit__(self, exc_type, exc_val, exc_tb):
         for item in reversed(self):
-            item.delete_on_exit = getattr(self, 'delete_on_exit', True)
+            item.keep = getattr(self, 'keep', None)
             item.__exit__(exc_type, exc_val, exc_tb)
 
     #