List installed Alpine Linux packages together with their installed sizes in human-friendly format

apk-installed-sizes.sh

#!/bin/bash

# there's a tool called numfmt which does the bytes thing for you
# numfmt can also absorb stdin, so the entire thing could just be 
#   `apk info | 
#    numfmt --to=iec | # (might need --invalid=ignore and --field=...)
#    awk -v OFS="\t" '... {print size, pkg}'
# or you can use awk to do the bytes stuff and use `apk info | awk ...'
bytesToHuman() {
  b=${1:-0}; d=''; s=0; S=(Bytes {K,M,G,T,P,E,Z,Y}iB)
  while ((b > 1024)); do
    d="$(printf ".%02d" $((b % 1024 * 100 / 1024)))"
    b=$((b / 1024))
    let s++
  done
  echo "$b$d ${S[$s]}"
}

INSTALLED=$(apk info)

for PKG in $INSTALLED; do
  # sed '/[a-z]/ { ...; q}' instead of the grep | grep | tail
  SIZE=$(apk info $PKG | grep -vE '[a-z]' | grep -E '[[:digit:]]' | tail -1)
  SIZE=$(bytesToHuman $SIZE)
  echo -e "$SIZE\t$PKG"
done

Shorter:

apk list -Iq | while read pkg; do apk info -s "$pkg" | tac | tr '\n' ' ' | xargs | sed -e 's/\s//'; done | sort -h