Add mac support for cooldowns.sh

[pdufour]

Background
Some of the commands are not mac osx compatible + it doesn't look in places like ~/.zshrc

Specific Changes

• Add cross-compatible sed wrapper
• Add cross-compatible date wrapper
• Replace grep -oP with cross-compatible version
• Add support for searching in ~/.zshrc

Test Plan

Test on Linux (regression test):

docker run --rm \
  -v "$HOME/.local/bin/cooldowns.sh:/usr/local/bin/cooldowns.sh:ro" \
  debian:stable-slim \
  bash -c '
    for t in pip uv npm pnpm yarn bun deno cargo; do
      cooldowns.sh set "$t" 7d
    done
    . /etc/profile.d/cooldowns.sh
    echo
    cooldowns.sh check
    echo
    echo "=== /etc/profile.d/cooldowns.sh ==="
    cat /etc/profile.d/cooldowns.sh
  '

Test on Mac

(
  export HOME=$(mktemp -d)
  export SHELL=/bin/zsh
  trap 'rm -rf "$HOME"' EXIT
  for t in pip uv npm pnpm yarn bun deno cargo; do
    cooldowns.sh set "$t" 7d
  done
  . "$HOME/.zshrc"
  echo
  cooldowns.sh check
  echo
  echo "=== ~/.zshrc ==="
  cat "$HOME/.zshrc"
)

[mprpic]

Looks great, thank you for the PR! Just one minor comment to address.

[mprpic]

Optional if you feel like it: your test plan could be converted into a CI workflow that runs those same instructions to validate some of script's functionality.

[pdufour]

Great idea, addressed comments and added the GH workflows! You can see the tests passing here - https://github.com/pdufour/cooldowns/actions/runs/25094497004/job/73527930256.

[pdufour]

@mprpic

[quinncomendant]

This doesn't work on macOS Sequoia 15.7.5:

date_to_epoch()   { date -j -f '%Y-%m-%d' "$1" +%s 2>/dev/null; }

Example:

❯ date -j -f %Y-%m-%d P7D +%s
Failed conversion of ``P7D'' using format ``%Y-%m-%d''
date: illegal time format
usage: date [-jnRu] [-I[date|hours|minutes|seconds|ns]] [-f input_fmt]
            [ -z output_zone ] [-r filename|seconds] [-v[+|-]val[y|m|w|d|H|M|S]]
            [[[[mm]dd]HH]MM[[cc]yy][.SS] | new_date] [+output_fmt]

And the error is masked because of the use of 2>/dev/null. :(

[mprpic]

This doesn't work on macOS Sequoia 15.7.5:

date_to_epoch()   { date -j -f '%Y-%m-%d' "$1" +%s 2>/dev/null; }

Example:

❯ date -j -f %Y-%m-%d P7D +%s
Failed conversion of ``P7D'' using format ``%Y-%m-%d''
date: illegal time format
usage: date [-jnRu] [-I[date|hours|minutes|seconds|ns]] [-f input_fmt]
            [ -z output_zone ] [-r filename|seconds] [-v[+|-]val[y|m|w|d|H|M|S]]
            [[[[mm]dd]HH]MM[[cc]yy][.SS] | new_date] [+output_fmt]

And the error is masked because of the use of 2>/dev/null. :(

Ha, that's because pip 26.1 now has the relative duration days feature: https://pip.pypa.io/en/stable/news/#v26-1

Prior versions only allowed direct timestamps (like %Y-%m-%d) so the parsing would was never expected to handle values such as P7D. I filed an issue to update the site (and script) to handle this: #3

[quinncomendant]

Ha, that's because pip 26.1 now has the relative duration days feature: https://pip.pypa.io/en/stable/news/#v26-1

Oh, of course – P7D was coming from my configuration value. 😆

Thanks for catching that!