env: move spack env stage into spack stage command

lib/spack/spack/cmd/env.py

@@ -34,7 +34,6 @@
     ['list', 'ls'],
     ['status', 'st'],
     'loads',
-    'stage',
     'uninstall',
 ]
 
@@ -309,23 +308,6 @@ def env_status(args):
         hashlen=None if args.very_long else 7,
         install_status=True)
 
-
-#
-# env stage
-#
-def env_stage_setup_parser(subparser):
-    """download all source files for all packages in an environment"""
-    subparser.add_argument(
-        'env', nargs='?', help='name of env to generate loads file for')
-
-
-def env_stage(args):
-    env = ev.get_env(args, 'env stage')
-    for spec in env.specs_by_hash.values():
-        for dep in spec.traverse():
-            dep.package.do_stage()
-
-
 #
 # env loads
 #

lib/spack/spack/cmd/stage.py

@@ -7,6 +7,7 @@
 
 import llnl.util.tty as tty
 
+import spack.environment as ev
 import spack.repo
 import spack.cmd
 import spack.cmd.common.arguments as arguments
@@ -28,7 +29,15 @@ def setup_parser(subparser):
 
 def stage(parser, args):
     if not args.specs:
-        tty.die("stage requires at least one package argument")
+        env = ev.get_env(args, 'stage', required=False)
+        if env:
+            tty.msg("Staging specs from environment %s" % env.name)
+            for spec in env.specs_by_hash.values():
+                for dep in spec.traverse():
+                    dep.package.do_stage()
+            return
+        else:
+            tty.die("`spack stage` requires a spec or an active environment")
 
     if args.no_checksum:
         spack.config.set('config:checksum', False, scope='command_line')

lib/spack/spack/cmd/uninstall.py

@@ -45,10 +45,9 @@ def setup_parser(subparser):
     subparser.add_argument(
         '-a', '--all', action='store_true', dest='all',
         help="USE CAREFULLY. remove ALL installed packages that match each "
-             "supplied spec. i.e., if you say uninstall `libelf`,"
+             "supplied spec. i.e., if you `uninstall --all libelf`,"
              " ALL versions of `libelf` are uninstalled. if no spec is "
-             "supplied all installed software will be uninstalled. this "
-             "is both useful and dangerous, like rm -r")
+             "supplied all installed software will be uninstalled.")
 
     subparser.add_argument(
         'packages',
@@ -175,7 +174,6 @@ def get_uninstall_list(args, specs):
 
 
 def uninstall_specs(args, specs):
-
     uninstall_list = get_uninstall_list(args, specs)
 
     if not uninstall_list:

lib/spack/spack/test/cmd/env.py

@@ -26,6 +26,7 @@
 add         = SpackCommand('add')
 remove      = SpackCommand('remove')
 concretize  = SpackCommand('concretize')
+stage       = SpackCommand('stage')
 
 
 def test_add():
@@ -510,13 +511,13 @@ def test_env_loads(install_mockery, mock_fetch):
 
 
 @pytest.mark.disable_clean_stage_check
-def test_env_stage(mock_stage, mock_fetch, install_mockery):
+def test_stage(mock_stage, mock_fetch, install_mockery):
     env('create', 'test')
     with ev.read('test'):
         add('mpileaks')
         add('zmpi')
         concretize()
-    env('stage', 'test')
+        stage()
 
     root = str(mock_stage)
 
@@ -540,8 +541,6 @@ def test_env_commands_die_with_no_env_arg():
     # these have an optional env arg and raise errors via tty.die
     with pytest.raises(spack.main.SpackCommandError):
         env('loads')
-    with pytest.raises(spack.main.SpackCommandError):
-        env('stage')
     with pytest.raises(spack.main.SpackCommandError):
         env('uninstall')