drop support for Python 3.8

.github/workflows/ci.yml

@@ -33,7 +33,6 @@ jobs:
       matrix:
         python-version:
           [
-            "3.8",
             "3.9",
             "3.10",
             "3.11",
@@ -69,13 +68,9 @@ jobs:
             },
           ]
         include:
-          - python-version: 3.8
-            platform: { os: "macos-15-intel", python-architecture: "x64", rust-target: "x86_64-apple-darwin" }
           - python-version: 3.9
             platform: { os: "macos-15-intel", python-architecture: "x64", rust-target: "x86_64-apple-darwin" }
         exclude:
-          - python-version: 3.8
-            platform: { os: "macOS-latest", python-architecture: "arm64", rust-target: "aarch64-apple-darwin" }
           - python-version: 3.9
             platform: { os: "macOS-latest", python-architecture: "arm64", rust-target: "aarch64-apple-darwin" }
           # no 32 bit windows PyPy
@@ -126,7 +121,7 @@ jobs:
     strategy:
       fail-fast: ${{ !contains(github.event.pull_request.labels.*.name, 'CI-no-fail-fast') }}
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"] # last numpy 1 release for 3.12
+        python-version: ["3.9", "3.10", "3.11", "3.12"] # last numpy 1 release for 3.12
         platform:
           [
             {
@@ -151,13 +146,9 @@ jobs:
             },
           ]
         include:
-          - python-version: 3.8
-            platform: { os: "macos-15-intel", python-architecture: "x64", rust-target: "x86_64-apple-darwin" }
           - python-version: 3.9
             platform: { os: "macos-15-intel", python-architecture: "x64", rust-target: "x86_64-apple-darwin" }
         exclude:
-          - python-version: 3.8
-            platform: { os: "macOS-latest", python-architecture: "arm64", rust-target: "aarch64-apple-darwin" }
           - python-version: 3.9
             platform: { os: "macOS-latest", python-architecture: "arm64", rust-target: "aarch64-apple-darwin" }
     steps:

CHANGELOG.md

@@ -4,6 +4,7 @@
   - `PyReadonlyArray`/`PyReadwriteArray` extraction now returns a `PyErr` which reports the actual dtype/dimensionality mismatch instead of nonsensical `CastError` messages like “'ndarray' is not an instance of 'ndarray'” ([#562](https://github.com/PyO3/rust-numpy/pull/562))
   - Add support for free-threaded stable abi (abi3t) from Python 3.15t+ ([#556](https://github.com/PyO3/rust-numpy/pull/556))
   - fixed free-threaded builds for 32 bit platforms from Python 3.15+ ([#556](https://github.com/PyO3/rust-numpy/pull/556))
+  - Drop support for Python 3.8 ([#567](https://github.com/PyO3/rust-numpy/pull/567))
 
 - v0.29.0
   - Fix PyArray_DTypeMeta definition when Py_LIMITED_API is disabled ([#532](https://github.com/PyO3/rust-numpy/pull/532))

README.md

@@ -15,8 +15,9 @@ Rust bindings for the NumPy C-API.
 ## Requirements
 - Rust >= 1.83.0
   - Basically, our MSRV follows the one of [PyO3](https://github.com/PyO3/pyo3)
-- Python >= 3.8
+- Python >= 3.9
   - Python 3.7 support was dropped from 0.29
+  - Python 3.8 support was dropped from 0.30
 - Some Rust libraries
   - [ndarray](https://github.com/rust-ndarray/ndarray) for Rust-side matrix library
   - [PyO3](https://github.com/PyO3/pyo3) for Python bindings

src/npyffi/objects.rs

@@ -431,9 +431,9 @@ pub struct PyUFuncObject_fields {
     pub core_signature: *mut c_char,
     pub type_resolver: PyUFunc_TypeResolutionFunc,
     pub reserved2: *mut c_void, // Was the legacy loop resolver
-    #[cfg(all(Py_3_8, not(Py_LIMITED_API)))]
+    #[cfg(not(Py_LIMITED_API))]
     pub vectorcall: Option<vectorcallfunc>,
-    #[cfg(not(all(Py_3_8, not(Py_LIMITED_API))))]
+    #[cfg(Py_LIMITED_API)]
     pub vectorcall: *mut c_void,
     pub reserved3: *mut c_void, // Was previously the `PyUFunc_MaskedInnerLoopSelectionFunc`
     pub op_flags: *mut npy_uint32,