"spack checksum" QoL (#14311)

* Non-interactive mode for spack checksum; allow passing 'package@version' to spack checksum

* Flake8 fixes

* Update checksum.py

Fix typo

* Update spack-completion script

* Automatically set non-interactive mode if more than one version passed

* Update lib/spack/spack/cmd/checksum.py

Co-Authored-By: Adam J. Stewart <ajstewart426@gmail.com>

* Add documentation and update spack-completion

* Flake8

* Rename option

* Update spack-completion

* Update lib/spack/spack/cmd/checksum.py

Co-Authored-By: Adam J. Stewart <ajstewart426@gmail.com>

* Update checksum.py

* Update stage.py

* Update create.py

Use batch mode when adding a new package

Co-authored-by: Ivan Razumov <ivan.razumov@cern.ch>
Co-authored-by: Adam J. Stewart <ajstewart426@gmail.com>

3 files changed, 18 insertions, 4 deletions

diff --git a/lib/spack/spack/cmd/checksum.py b/lib/spack/spack/cmd/checksum.py
index eaeaf5337f..97e7833af0 100644
--- a/lib/spack/spack/cmd/checksum.py
+++ b/lib/spack/spack/cmd/checksum.py
@@ -26,6 +26,9 @@ def setup_parser(subparser):
     subparser.add_argument(
         '--keep-stage', action='store_true',
         help="don't clean up staging area when command completes")
+    subparser.add_argument(
+        '-b', '--batch', action='store_true',
+        help="don't ask which versions to checksum")
     arguments.add_common_arguments(subparser, ['package'])
     subparser.add_argument(
         'versions', nargs=argparse.REMAINDER,
@@ -33,6 +36,11 @@ def setup_parser(subparser):
 
 
 def checksum(parser, args):
+    # Did the user pass 'package@version' string?
+    if len(args.versions) == 0 and '@' in args.package:
+        args.versions = [args.package.split('@')[1]]
+        args.package = args.package.split('@')[0]
+
     # Make sure the user provided a package and not a URL
     if not valid_fully_qualified_module_name(args.package):
         tty.die("`spack checksum` accepts package names, not URLs.")
@@ -57,6 +65,7 @@ def checksum(parser, args):
 
     version_lines = spack.stage.get_checksums_for_versions(
         url_dict, pkg.name, keep_stage=args.keep_stage,
+        batch=(args.batch or len(args.versions) > 0),
         fetch_options=pkg.fetch_options)
 
     print()
diff --git a/lib/spack/spack/cmd/create.py b/lib/spack/spack/cmd/create.py
index 304b531b49..7d12dc98a7 100644
--- a/lib/spack/spack/cmd/create.py
+++ b/lib/spack/spack/cmd/create.py
@@ -629,7 +629,7 @@ def get_versions(args, name):
 
         versions = spack.stage.get_checksums_for_versions(
             url_dict, name, first_stage_function=guesser,
-            keep_stage=args.keep_stage)
+            keep_stage=args.keep_stage, batch=True)
     else:
         versions = unhashed_versions
 
diff --git a/lib/spack/spack/stage.py b/lib/spack/spack/stage.py
index 54d370a50d..5cac9e32a1 100644
--- a/lib/spack/spack/stage.py
+++ b/lib/spack/spack/stage.py
@@ -753,7 +753,7 @@ def purge():
 
 def get_checksums_for_versions(
         url_dict, name, first_stage_function=None, keep_stage=False,
-        fetch_options=None):
+        fetch_options=None, batch=False):
     """Fetches and checksums archives from URLs.
 
     This function is called by both ``spack checksum`` and ``spack
@@ -767,6 +767,8 @@ def get_checksums_for_versions(
         first_stage_function (callable): function that takes a Stage and a URL;
             this is run on the stage of the first URL downloaded
         keep_stage (bool): whether to keep staging area when command completes
+        batch (bool): whether to ask user how many versions to fetch (false)
+            or fetch all versions (true)
         fetch_options (dict): Options used for the fetcher (such as timeout
             or cookies)
 
@@ -788,8 +790,11 @@ def get_checksums_for_versions(
                  for v in sorted_versions]))
     print()
 
-    archives_to_fetch = tty.get_number(
-        "How many would you like to checksum?", default=1, abort='q')
+    if batch:
+        archives_to_fetch = len(sorted_versions)
+    else:
+        archives_to_fetch = tty.get_number(
+            "How many would you like to checksum?", default=1, abort='q')
 
     if not archives_to_fetch:
         tty.die("Aborted.")