update

packaging/install.sh

@@ -0,0 +1,71 @@
+#!/usr/bin/env sh
+set -eu
+
+PYTHON_BIN="${PYTHON:-python3}"
+INSTALL_ROOT="${FLOW_INSTALL_ROOT:-$HOME/.local/share/flow}"
+BIN_DIR="${FLOW_BIN_DIR:-$HOME/.local/bin}"
+VENV_DIR="$INSTALL_ROOT/venv"
+
+SCRIPT_DIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
+WHEELHOUSE="$SCRIPT_DIR/wheelhouse"
+
+if ! command -v "$PYTHON_BIN" >/dev/null 2>&1; then
+  echo "python3 is required. Set PYTHON=/path/to/python3 to override." >&2
+  exit 1
+fi
+
+if ! "$PYTHON_BIN" -m venv --help >/dev/null 2>&1; then
+  echo "python3 was built without the venv module. Install Python's venv package." >&2
+  exit 1
+fi
+
+if ! "$PYTHON_BIN" -m pip --version >/dev/null 2>&1; then
+  echo "python3 pip module is required. Install pip for the selected python." >&2
+  exit 1
+fi
+
+if [ ! -d "$WHEELHOUSE" ]; then
+  echo "wheelhouse not found: $WHEELHOUSE" >&2
+  exit 1
+fi
+
+FLOW_WHEELS_COUNT=0
+FLOW_WHEEL=""
+for candidate in "$WHEELHOUSE"/flow-*.whl; do
+  if [ -f "$candidate" ]; then
+    FLOW_WHEELS_COUNT=$((FLOW_WHEELS_COUNT + 1))
+    if [ -z "$FLOW_WHEEL" ]; then
+      FLOW_WHEEL="$candidate"
+    fi
+  fi
+done
+
+if [ "$FLOW_WHEELS_COUNT" -eq 0 ]; then
+  echo "flow wheel not found in $WHEELHOUSE" >&2
+  exit 1
+fi
+
+if [ "$FLOW_WHEELS_COUNT" -gt 1 ]; then
+  echo "multiple flow wheels found in $WHEELHOUSE. Ensure exactly one release wheel is present." >&2
+  exit 1
+fi
+
+mkdir -p "$INSTALL_ROOT"
+"$PYTHON_BIN" -m venv "$VENV_DIR"
+
+if ! "$VENV_DIR/bin/python" -m pip --version >/dev/null 2>&1; then
+  echo "Created venv does not expose pip. Ensure Python's ensurepip is available." >&2
+  exit 1
+fi
+
+"$VENV_DIR/bin/python" -m pip install --no-cache-dir --upgrade "$FLOW_WHEEL"
+
+mkdir -p "$BIN_DIR"
+cat > "$BIN_DIR/flow" <<EOF
+#!/usr/bin/env sh
+exec "$VENV_DIR/bin/flow" "\$@"
+EOF
+chmod 755 "$BIN_DIR/flow"
+
+echo "Installed flow to $BIN_DIR/flow"
+echo "Run: $BIN_DIR/flow --version"