set rust target through env

.github/workflows/ci.yml

@@ -85,22 +85,22 @@ jobs:
         run: echo LD_LIBRARY_PATH=${pythonLocation}/lib >> $GITHUB_ENV
 
       - name: Build without default features
-        run: cargo build --no-default-features --verbose --target ${{ matrix.platform.rust-target }}
+        run: cargo build --no-default-features --verbose
 
       - name: Build with default features
-        run: cargo build --features "num-bigint num-complex" --verbose --target ${{ matrix.platform.rust-target }}
+        run: cargo build --features "num-bigint num-complex" --verbose
 
       # Run tests (except on PyPy, because no embedding API).
       - if: matrix.python-version != 'pypy3'
         name: Test
-        run: cargo test --features "num-bigint num-complex" --target ${{ matrix.platform.rust-target }}
+        run: cargo test --features "num-bigint num-complex"
       # Run tests again, but in abi3 mode
       - if: matrix.python-version != 'pypy3'
         name: Test (abi3)
-        run: cargo test --no-default-features --features "abi3,macros" --target ${{ matrix.platform.rust-target }}
+        run: cargo test --no-default-features --features "abi3,macros"
 
       - name: Test proc-macro code
-        run: cargo test --manifest-path=pyo3-derive-backend/Cargo.toml --target ${{ matrix.platform.rust-target }}
+        run: cargo test --manifest-path=pyo3-derive-backend/Cargo.toml
 
       - name: Install python test dependencies
         run: |
@@ -115,6 +115,7 @@ jobs:
           done
 
     env:
+      CARGO_BUILD_TARGET: ${{ matrix.platform.rust-target }}
       RUST_BACKTRACE: 1
 
   coverage:

examples/maturin_extension/pyproject.toml

@@ -1,3 +1,3 @@
 [build-system]
-requires = ["maturin @ git+https://github.com/davidhewitt/maturin.git@f4dce9879999ea404379e2ebcceb9af661bcd5ec"]
+requires = ["maturin @ git+https://github.com/PyO3/maturin.git@9f8cdba7894cc65110d1ba94140adef97b91e1e3"]
 build-backend = "maturin"