build_wasm.sh update

Updated the build_wasm.sh script to work with netlify

Author: justushelo

scripts/build_wasm.sh

@@ -1,53 +1,83 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
+# 1. Setup paths and environment
 ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 cd "${ROOT_DIR}"
 
+# Determine which Python interpreter to use
 HOST_PYTHON="${PYTHON_BIN:-}"
 if [[ -z "${HOST_PYTHON}" ]]; then
-  if command -v python3 >/dev/null 2>&1; then
-    HOST_PYTHON="python3"
-  elif command -v python >/dev/null 2>&1; then
-    HOST_PYTHON="python"
-  else
-    echo "No python interpreter found. Install python3 and retry."
-    exit 1
-  fi
+    if command -v python3 >/dev/null 2>&1; then
+        HOST_PYTHON="python3"
+    elif command -v python >/dev/null 2>&1; then
+        HOST_PYTHON="python"
+    else
+        echo "Error: No python interpreter found. Install python3 and retry."
+        exit 1
+    fi
 fi
 
+# Create build virtual environment
 VENV_DIR="${ROOT_DIR}/.wasm-build-venv"
 if [[ ! -d "${VENV_DIR}" ]]; then
-  echo "Creating build virtual environment at ${VENV_DIR}..."
-  "${HOST_PYTHON}" -m venv "${VENV_DIR}"
+    echo "Creating build virtual environment at ${VENV_DIR}..."
+    "${HOST_PYTHON}" -m venv "${VENV_DIR}"
 fi
 
 PYTHON_BIN="${VENV_DIR}/bin/python"
 
-echo "Building local simdec wheel..."
+# Install build dependencies and build the wheel
+echo "Installing build tools and generating local wheel..."
 "${PYTHON_BIN}" -m pip install --upgrade pip build panel matplotlib seaborn scipy SALib
+
+# Clean old builds to avoid picking up the wrong wheel
+rm -rf dist/*.whl
 "${PYTHON_BIN}" -m build --wheel .
 
-SIMDEC_WHEEL="$(ls dist/simdec-*.whl | head -n 1)"
-export PYTHONPATH="${ROOT_DIR}/src:${PYTHONPATH:-}"
+# Identify the generated wheel file
+# This prevents the "unbound variable" error by checking if the file exists
+SIMDEC_WHEEL_PATH=$(ls dist/*.whl | head -n 1 || echo "")
+
+if [[ -z "${SIMDEC_WHEEL_PATH}" ]]; then
+    echo "Error: No wheel file found in dist/. Build failed."
+    exit 1
+fi
 
+WHEEL_FILENAME=$(basename "${SIMDEC_WHEEL_PATH}")
+
+# Prepare output directory
+OUT_DIR="dist/pyodide"
+mkdir -p "${OUT_DIR}/_static"
+
+# IMPORTANT: Copy the wheel into the output directory so it's accessible via HTTP
+cp "${SIMDEC_WHEEL_PATH}" "${OUT_DIR}/"
+
+# Convert Panel apps to Pyodide worker
 echo "Converting Panel apps to Pyodide worker output..."
+export PYTHONPATH="${ROOT_DIR}/src:${PYTHONPATH:-}"
+
+# Use the full path for the requirements so the converter can find the file
 "${PYTHON_BIN}" -m panel convert panel/simdec_app.py panel/sampling.py \
-  --to pyodide-worker \
-  --out dist/pyodide \
-  --requirements "${SIMDEC_WHEEL}" numpy pandas matplotlib seaborn scipy SALib \
-  --resources panel/data/stress.csv
+    --to pyodide-worker \
+    --out "${OUT_DIR}" \
+    --requirements "${SIMDEC_WHEEL_PATH}" numpy pandas matplotlib seaborn scipy SALib \
+    --resources panel/data/stress.csv
 
+# Copy custom index page and static assets
 echo "Copying custom index page and static assets..."
-# 1. Create the _static folder in the output directory
-mkdir -p dist/pyodide/_static
 
-# 2. Copy all your images and thumbnails from docs/_static (if they exist)
+# Copy images/thumbnails from docs/_static if they exist
 if [ -d "docs/_static" ]; then
-  cp -r docs/_static/* dist/pyodide/_static/
+    cp -r docs/_static/* "${OUT_DIR}/_static/"
 fi
 
-# 3. Copy your beautiful custom HTML file to act as the homepage OVERWRITING anything else
-cp panel/index.html dist/pyodide/index.html
+# Overwrite default index.html with your custom homepage
+if [ -f "panel/index.html" ]; then
+    cp panel/index.html "${OUT_DIR}/index.html"
+else
+    echo "Warning: panel/index.html not found. Using default Panel index."
+fi
 
-echo "WASM site generated at dist/pyodide"
+echo "---"
+echo "WASM site successfully generated at ${OUT_DIR}"