- workflow fix

.github/workflows/publish_pypi.yml

@@ -11,6 +11,8 @@ jobs:
     runs-on: ubuntu-latest
     env:
       CARGO_HOME: ${{ github.workspace }}/.cargo
+      RUSTUP_HOME: ${{ github.workspace }}/.rustup
+      RUSTUP_TOOLCHAIN: stable
     steps:
       - uses: actions/checkout@v6
       - uses: actions/setup-python@v5
@@ -40,11 +42,11 @@ jobs:
       - name: Install Rust
         run: |
           export PATH="$CARGO_HOME/bin:$PATH"
-          if ! command -v rustc >/dev/null 2>&1; then
+          if ! command -v rustup >/dev/null 2>&1; then
             curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
-          else
-            rustup update
           fi
+          rustup toolchain install stable --profile minimal
+          rustup default stable
           echo "$CARGO_HOME/bin" >> "$GITHUB_PATH"
           cargo --version
         shell: bash
@@ -78,7 +80,11 @@ jobs:
       - name: Build wheels
         run: |
           export PATH="$HOME/.osxcross/bin:$PATH"
-          rustup default stable
+          echo "HOME=$HOME CARGO_HOME=$CARGO_HOME RUSTUP_HOME=$RUSTUP_HOME"
+          command -v rustup
+          command -v cargo
+          rustup show
+          cargo --version
           rm -rf dist
           maturin sdist --out dist -m ome-metadata/Cargo.toml