anchor.diff:    LIBXML2_VERSION=$(pkg-config --modversion libxml-2.0) \
     SOXR_VERSION=$(pkg-config --modversion soxr) \
     LIBVO_AMRWBENC_VERSION=$(pkg-config --modversion vo-amrwbenc) \
  +  SNAPPY_VERSION=$(apk info -a snappy | head -n1 | awk '{print $1}' | sed -e 's/snappy-//') \
     jq -n \
     '{ \
     expat: env.EXPAT_VERSION, \
  
positive.code:   libsamplerate: env.LIBSAMPLERATE_VERSION, \
    libshine: env.LIBSHINE_VERSION, \
    libsoxr: env.SOXR_VERSION, \
    libspeex: env.SPEEX_VERSION, \
    libsvtav1: env.SVTAV1_VERSION, \
    libtheora: env.THEORA_VERSION, \
  
negative.code:   --enable-librav1e \
    --enable-librubberband \
    --enable-libshine \
    --enable-libsnappy \
    --enable-libsoxr \
    --enable-libspeex \
    --enable-libsvtav1 \
  