unsloth_zoo/__init__.py guards against being imported standalone:
if "UNSLOTH_IS_PRESENT" not in os.environ:
raise ImportError("Please install Unsloth via `pip install unsloth`!")
The env var is set by unsloth/__init__.py at import time, so importing
unsloth must happen first. The old check_imports() imported xformers,
bnb, transformers, trl, peft, then unsloth_zoo -- which fired the guard
because unsloth had not been imported yet.
Reorder check_imports() to import unsloth (and unsloth_zoo) first, then
the rest. check_unsloth_import() becomes a thin re-import to keep the
"FastLanguageModel reachable" banner in the output.
Same fix the unsloth README has been recommending for years: "import
unsloth at the top of your file, before transformers/trl/peft."
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