fix(ci): add --no-isolation to python -m build to fix semantic release

python -m build runs in isolation mode by default, which spawns a pip
subprocess to install build deps into a temporary environment. In a
uv-managed venv, .venv/bin/pip is a non-functional stub that cannot
execute when uv is not on PATH (as in the semantic-release Action
subprocess environment).

--no-isolation uses the already-populated venv directly, bypassing
the pip subprocess entirely. setuptools and wheel are already present
from uv sync --all-extras.

Author: fgogolli

dev-tools/package/build.sh

@@ -29,27 +29,13 @@ if [ "$QUIET" = false ]; then
 fi
 rm -rf dist/ build/ -- *.egg-info/
 
-# Install build dependencies if needed
+# Verify build dependencies are present (declared in pyproject.toml dev deps)
 if [ "$QUIET" = false ]; then
     echo "INFO: Checking build dependencies..."
 fi
 if ! $RUN_TOOL python -c "import build" 2>/dev/null; then
-    if [ "$QUIET" = false ]; then
-        echo "INFO: Installing build dependencies..."
-    fi
-    if command -v uv >/dev/null 2>&1; then
-        if [ "$QUIET" = true ]; then
-            $RUN_TOOL uv add --dev build >/dev/null 2>&1
-        else
-            $RUN_TOOL uv add --dev build
-        fi
-    else
-        if [ "$QUIET" = true ]; then
-            $RUN_TOOL pip install build >/dev/null 2>&1
-        else
-            $RUN_TOOL pip install build
-        fi
-    fi
+    echo "ERROR: 'build' package not found. Ensure 'uv sync --all-extras' has been run." >&2
+    exit 1
 fi
 
 # Build package
@@ -61,17 +47,17 @@ if [ "$QUIET" = true ]; then
     # Suppress all output in quiet mode
     if [ -n "$BUILD_ARGS" ]; then
         # shellcheck disable=SC2086
-        $RUN_TOOL python -m build $BUILD_ARGS >/dev/null 2>&1
+        $RUN_TOOL python -m build --no-isolation $BUILD_ARGS >/dev/null 2>&1
     else
-        $RUN_TOOL python -m build >/dev/null 2>&1
+        $RUN_TOOL python -m build --no-isolation >/dev/null 2>&1
     fi
 else
     # Normal output
     if [ -n "$BUILD_ARGS" ]; then
         # shellcheck disable=SC2086
-        $RUN_TOOL python -m build $BUILD_ARGS 2>/dev/null
+        $RUN_TOOL python -m build --no-isolation $BUILD_ARGS 2>/dev/null
     else
-        $RUN_TOOL python -m build 2>/dev/null
+        $RUN_TOOL python -m build --no-isolation 2>/dev/null
     fi
 fi