Add conda hash to mulled-hash utility

lib/galaxy/tool_util/deps/mulled/mulled_hash.py

@@ -1,6 +1,9 @@
 #!/usr/bin/env python
 """Produce a mulled hash for specified conda targets.
 
+Galaxy does not use the "v1" hash format for uncontainerized conda dependencies. For the mulled hash for conda
+dependencies, use `--hash conda`
+
 Examples
 
 Produce a mulled hash with:
@@ -9,23 +12,31 @@
 """
 
 from ._cli import arg_parser
+from ..conda_util import hash_conda_packages
 from .mulled_build import target_str_to_targets
 from .util import (
     v1_image_name,
     v2_image_name,
 )
 
 
+IMAGE_FUNCS = {
+    "conda": lambda x: f"mulled-v1-{hash_conda_packages(x)}",
+    "v1": v1_image_name,
+    "v2": v2_image_name,
+}
+
+
 def main(argv=None):
     """Main entry-point for the CLI tool."""
     parser = arg_parser(argv, globals())
     parser.add_argument(
         "targets", metavar="TARGETS", default=None, help="Comma-separated packages for calculating the mulled hash."
     )
-    parser.add_argument("--hash", dest="hash", choices=["v1", "v2"], default="v2")
+    parser.add_argument("--hash", dest="hash", choices=["conda", "v1", "v2"], default="v2")
     args = parser.parse_args()
     targets = target_str_to_targets(args.targets)
-    image_name = v2_image_name if args.hash == "v2" else v1_image_name
+    image_name = IMAGE_FUNCS[args.hash]
     print(image_name(targets))