Clean cargo registry

cargo_offload.sh

#!/usr/bin/env bash
## Deletes ~/.cargo cached data older than 2 weeks or `OFFLOAD_THRESHOLD`-days

# Based off of:
# https://gist.github.com/alexheretic/661cb78b49ca280c629c64be0fabf8d2
# Changes: added brainrot_location & threshold variable
# I reccomend pairing this with cargo-sweep https://github.com/holmgr/cargo-sweep

set -eu

# accept optional location for cargo registry
# so i can clean my brainrot on windows from wsl!
brainrot_location=${1:-"~/.cargo/"}

# amount of time to consider when keeping files
# read from `OFFLOAD_THRESHOLD` env var
# 13 was the default in the original script
threshold="+${OFFLOAD_THRESHOLD:-"13"}"

du_before=$(du -hd0 $brainrot_location | cut -f1)

# remove old crate caches & sources
find "${brainrot_location}/registry/cache/" -type f -ctime $threshold -atime $threshold -delete

find "${brainrot_location}/registry/src/" -type f -ctime $threshold -atime $threshold \
  | cut -d'/' -f1-8 | sort | uniq | grep . \
  | xargs -n1 rm -rf

# remove old git checkouts
find "${brainrot_location}/git" -type f -ctime $threshold -atime $threshold \
  | cut -d'/' -f1-7 | sort | uniq | grep . \
  | xargs -n1 rm -rf

du_after=$(du -hd0 $brainrot_location | cut -f1)

if [ "$du_after" != "$du_before" ]; then
  # shellcheck disable=SC2088
  echo "$brainrot_location: $du_before -> $du_after"
else
  echo "unchanged, congratulations no brainrot!"
fi