Fix source package builds failing with hatchling circular build error

Add hatchling to --only-binary in onedir_dependencies() so pip installs
it from its universal wheel instead of attempting a source build.
When --no-binary :all: is active (Linux builds), pip 25.2 tries to
source-build hatchling but hatchling lists itself as its own PEP 517
build backend, causing pip's build tracker to raise:

  LookupError: hatchling is already being built

Fixes #68858

Made-with: Cursor

Author: sujitdb

changelog/68858.fixed.md

@@ -0,0 +1 @@
+Fixed source package builds (DEB/RPM) failing with ``LookupError: hatchling is already being built`` by adding ``hatchling`` to the ``--only-binary`` allow-list so pip uses its universal wheel instead of attempting a circular source build.

tools/pkg/build.py

@@ -618,7 +618,7 @@ def onedir_dependencies(
         "-v",
         "--use-pep517",
         "--no-cache-dir",
-        "--only-binary=maturin,apache-libcloud,pymssql",
+        "--only-binary=maturin,apache-libcloud,pymssql,hatchling",
     ]
     if platform == "windows":
         python_bin = env_scripts_dir / "python"
@@ -627,7 +627,7 @@ def onedir_dependencies(
         python_bin = env_scripts_dir / "python3"
         install_args.append("--no-binary=:all:")
         install_args.append(
-            "--only-binary=maturin,apache-libcloud,pymssql,cassandra-driver"
+            "--only-binary=maturin,apache-libcloud,pymssql,cassandra-driver,hatchling"
         )
 
     # Cryptography needs openssl dir set to link to the proper openssl libs.