diff --git a/studio/install_python_stack.py b/studio/install_python_stack.py index 39fec2e6f5..603ac162c9 100644 --- a/studio/install_python_stack.py +++ b/studio/install_python_stack.py @@ -373,10 +373,25 @@ def install_python_stack() -> int: ], ) else: - run( - "Upgrading pip", - [sys.executable, "-m", "pip", "install", "--upgrade", "pip"], - ) + # pip may not exist yet (uv-created venvs omit it). Try ensurepip + # first, then upgrade. Only fall back to a direct upgrade when pip + # is already present. + _has_pip = subprocess.run( + [sys.executable, "-m", "pip", "--version"], + stdout = subprocess.DEVNULL, + stderr = subprocess.DEVNULL, + ).returncode == 0 + + if not _has_pip: + run( + "Bootstrapping pip via ensurepip", + [sys.executable, "-m", "ensurepip", "--upgrade"], + ) + else: + run( + "Upgrading pip", + [sys.executable, "-m", "pip", "install", "--upgrade", "pip"], + ) # 3. Core packages: unsloth-zoo + unsloth (or custom package name) if skip_base: diff --git a/unsloth/models/_utils.py b/unsloth/models/_utils.py index 1fffc62f81..da912dec76 100644 --- a/unsloth/models/_utils.py +++ b/unsloth/models/_utils.py @@ -12,7 +12,7 @@ # See the License for the specific language governing permissions and # limitations under the License. -__version__ = "2026.3.13" +__version__ = "2026.3.14" __all__ = [ "SUPPORTS_BFLOAT16",