# Version 0.61.2 (07 April 2025)

This is a maintenance release that adds support for NumPy 2.2 and fixes some regressions reported against 0.61.0.

## Highlights

### Support for NumPy 2.2

Numba now supports NumPy 2.2, with the following notable changes:

- `np.empty(0)` cannot be treated as a boolean value anymore. This is a breaking change for code that relies on this behavior. The following code will raise a `ValueError`:

      import numpy as np
      if np.empty(0):
          print("This will not be printed")

- Generic timedeltas can no longer be hashed due to undefined time units.

- From NumPy 2.2 onwards, hash values for `numpy.timedelta64` and `numpy.datetime64` instances computed in Numba compiled code do not match the NumPy hash values of the same. Prior to NumPy 2.2, NumPy hash values for `numpy.timedelta64` and `numpy.datetime64` instances were equivalent to their integer value representation. From NumPy 2.2 onwards, their hash value is the same as the hash of the equivalent type from the built-in `datetime` module, Numba does not replicate this behaviour.

- `np.trimzeros` now also trims `\0` values.

(PR-#9919)

## Bug Fixes

### Fix static type checker support for `numba.core.types`

When Numba 0.61 introduced the split type system, it resulted in dynamic type behavior that was incompatible with static type checkers. To resolve this, we’ve added a type stub file (`.pyi`) for `numba.core.types` that provides explicit type annotations.

(PR-#9945)

### Fix issue in code generation for array set-slice.

The code generation for array set-slice was inadvertently written as being CPU target specific. This is now rectified and refactored so as to provide a “generic” target version that should be safe to use everywhere, along with an `@overload`-able stub to allow targets to implement custom versions as needed.

(PR-#9972)

Pull-Requests:

- PR #9919: Support for NumPy 2.2 (kc611)

- PR #9920: adding win-64 builder for Numba conda packages (swap357 esc)

- PR #9940: add GHA workflow for building numba wheels for win-64 (swap357)

- PR #9945: Add type stub to numba.core.types to help static type checkers. (sklam)

- PR #9964: remove upper pin on NumPy (esc)

- PR #9965: update win-64 conda builder test matrix (swap357)

- PR #9972: Fix issue with error handling in slice assignment. (stuartarchibald)

- PR #9999: Added release notes and version table entry for 0.61.1rc1 (kc611)

- PR #10002: GHA workflows and other cherry picks for release0.61.1 (sklam swap357 kc611)

Authors:

- esc

- kc611

- sklam

- stuartarchibald

- swap357