Still trying to fix crossplatform CI build. Definitely not my strongest skill

Author: jmaczan

.github/workflows/build-wheels.yml

@@ -269,13 +269,14 @@ jobs:
 
       - name: Install build dependencies
         run: |
-          pip install build wheel torch numpy
+          pip install build wheel numpy
+          pip install --index-url https://download.pytorch.org/whl/cpu --extra-index-url https://pypi.org/simple torch
 
       - name: Build wheel
         env:
           DAWN_PREFIX: ${{ github.workspace }}/dawn-install
         run: |
-          pip wheel . --no-deps -w dist/
+          pip wheel . --no-deps --no-build-isolation -w dist/
 
       - name: Upload wheel
         uses: actions/upload-artifact@v4
@@ -310,7 +311,7 @@ jobs:
         env:
           DAWN_PREFIX: ${{ github.workspace }}/dawn-install
         run: |
-          pip wheel . --no-deps -w dist/
+          pip wheel . --no-deps --no-build-isolation -w dist/
 
       - name: Upload wheel
         uses: actions/upload-artifact@v4
@@ -348,7 +349,7 @@ jobs:
         env:
           DAWN_PREFIX: ${{ github.workspace }}/dawn-install
         run: |
-          pip wheel . --no-deps -w dist/
+          pip wheel . --no-deps --no-build-isolation -w dist/
 
       - name: Upload wheel
         uses: actions/upload-artifact@v4

scripts/build-dawn.sh

@@ -5,8 +5,14 @@
 
 set -e
 
-INSTALL_PREFIX="${1:-$PWD/dawn-install}"
-DAWN_DIR="${DAWN_DIR:-$PWD/dawn}"
+ROOT_DIR="$PWD"
+INSTALL_PREFIX="${1:-$ROOT_DIR/dawn-install}"
+DAWN_DIR="${DAWN_DIR:-$ROOT_DIR/dawn}"
+
+# Normalize install prefix to an absolute path so relative args work after cd.
+if [[ "$INSTALL_PREFIX" != /* ]]; then
+    INSTALL_PREFIX="$ROOT_DIR/$INSTALL_PREFIX"
+fi
 NUM_JOBS="${NUM_JOBS:-$(nproc 2>/dev/null || sysctl -n hw.ncpu 2>/dev/null || echo 4)}"
 
 echo "Building Dawn..."