build:
  #!/bin/bash
  set -e
  if ! command -v inkscape &> /dev/null; then
    echo "inkscape not installed. aborting"
    exit 1
  fi
  widths=(64 128 256 512 1024)
  mkdir -p pngs
  for svg in src/logo*.svg; do
    for width in "${widths[@]}"; do
      filename=$(basename -- "$svg")
      filename="${filename%.*}"
      inkscape "$svg" --export-type=png --export-filename="pngs/$filename-w$width.png" --export-width="$width"
    done
  done
  inkscape "src/social-card.svg" --export-type=png --export-filename="pngs/social-card.png" --export-width="1920"