feat: remove init from python cli

kernels/src/kernels/cli/__init__.py

@@ -7,7 +7,6 @@
 from huggingface_hub import ModelCard, ModelCardData
 
 from kernels.cli.doc import generate_readme_for_kernel
-from kernels.cli.init import parse_kernel_name, run_init
 from kernels.cli.kernel_card_utils import (
     DESCRIPTION,
     KERNEL_CARD_TEMPLATE_PATH,
@@ -22,7 +21,6 @@
 from kernels.compat import tomllib
 from kernels.lockfile import KernelLock, get_kernel_locks
 from kernels.utils import (
-    KNOWN_BACKENDS,
     install_kernel,
     install_kernel_all_variants,
 )
@@ -78,7 +76,9 @@ def main():
     versions_parser.add_argument("repo_id", type=str, help="The kernel repo ID")
     versions_parser.set_defaults(func=kernel_versions)
 
-    upload_parser = subparsers.add_parser("upload", help="Upload kernels to the Hub")
+    upload_parser = subparsers.add_parser(
+        "upload", help="(Deprecated) Upload kernels to the Hub. Use `kernel-builder upload` instead."
+    )
     upload_parser.add_argument(
         "kernel_dir",
         type=Path,
@@ -223,33 +223,14 @@ def main():
 
     init_parser = subparsers.add_parser(
         "init",
-        help="Initialize a new kernel project from template",
+        help="(Removed) Use `kernel-builder init` instead",
     )
     init_parser.add_argument(
         "kernel_name",
-        type=parse_kernel_name,
+        nargs="?",
         help="Name of the kernel repo (e.g., drbh/my-kernel)",
     )
-    init_parser.add_argument(
-        "--template-repo",
-        type=str,
-        default="kernels-community/template",
-        help="HuggingFace repo ID for the template",
-    )
-    init_parser.add_argument(
-        "--backends",
-        nargs="+",
-        choices={"all"} | KNOWN_BACKENDS,
-        default=["metal"] if sys.platform == "darwin" else ["cuda"],
-        metavar="BACKEND",
-        help=f"Backends to enable (all, {', '.join(KNOWN_BACKENDS)}). Defaults: cuda on Linux/Windows, metal on macOS.",
-    )
-    init_parser.add_argument(
-        "--overwrite",
-        action="store_true",
-        help="Overwrite existing directory if it exists",
-    )
-    init_parser.set_defaults(func=run_init)
+    init_parser.set_defaults(func=_init_removed)
 
     fill_card_parser = subparsers.add_parser(
         "fill-card",
@@ -330,6 +311,20 @@ def lock_kernels(args):
 
 
 def upload_kernels(args):
+    import warnings
+
+    warnings.warn(
+        "`kernels upload` is deprecated and will be removed in version 0.14. "
+        "Please use `kernel-builder upload` instead.",
+        DeprecationWarning,
+        stacklevel=1,
+    )
+    # Also print to stderr for visibility in CLI usage
+    print(
+        "Warning: `kernels upload` is deprecated and will be removed in version 0.14.\n"
+        "Please use `kernel-builder upload` instead.\n",
+        file=sys.stderr,
+    )
     upload_kernels_dir(
         Path(args.kernel_dir).resolve(),
         repo_id=args.repo_id,
@@ -372,6 +367,17 @@ def default(self, o):
         return super().default(o)
 
 
+def _init_removed(args):
+    print(
+        "Error: `kernels init` has been removed.\n\n"
+        "Please use `kernel-builder init` instead:\n\n"
+        "    kernel-builder init <kernel_name>\n\n"
+        "For more information, see: https://github.com/huggingface/kernels",
+        file=sys.stderr,
+    )
+    sys.exit(1)
+
+
 def check_kernel(
     *, macos: str, manylinux: str, python_abi: str, repo_id: str, revision: str
 ):