Update various packages on macosx with homebrew

update_various_packages

#!/bin/bash

# gist -r a055587699858a9b2980 | diff -u - update_various_packages
# gist -u a055587699858a9b2980 update_various_packages

set -e

_saved_path=$PATH

# brew doctor does not like pyenv:
#   Warning: python is symlinked to python3
#   Warning: "config" scripts exist outside your system or Homebrew directories.
if [ -n "$PYENV_ROOT" ] ; then export PATH=$( python - "$PATH" "$PYENV_ROOT" <<EOF
import os, sys
path = sys.argv[1].split(os.pathsep)
good = [p for p in path if not p.startswith(sys.argv[2].rstrip('/')+'/')]
print(os.pathsep.join(good))
EOF
)
fi

# brew doctor does not like unprefixed coreutils or findutils in PATH
export PATH=$( python - "$PATH" <<EOF
import os, sys
path = sys.argv[1].split(os.pathsep)
good = [p for p in path if not p.endswith('/gnubin')]
print(os.pathsep.join(good))
EOF
)

set -x

brew update
brew upgrade
brew cleanup 
brew cask cleanup
brew prune
brew doctor 

set +x

PATH=${_saved_path}

good_xxenv_versions () {
  sed -E -n -e 's#^[* ] ([0-9]+\.[0-9]+\.[0-9]+)( .*)?$#\1#p' | sort -u
}

if command -v rbenv > /dev/null ; then
  for v in $( rbenv versions | good_xxenv_versions ) ; do
    (
    export RBENV_VERSION=${v}
    rbenv version
    set -x
    rbenv exec gem update
    rbenv exec gem cleanup -v
    rbenv rehash
    set +x
    )
  done
fi

if command -v npm ; then
  set -x
  npm -g update
  set +x
fi

sort_with_first () {
  local marker=\"
  local name=pip
  sed -e "s/^\(${name}\)$/${marker}\1/" | sort | sed -e "s/^${marker}//"
}

pip_upgrade () {
  local pip=$1
  command -v "$pip" || return

  local troublepkgs=()
  local pkg

  local listcmd=( $pip list --outdated )
  local pipmajorversion=$(
      pip freeze --disable-pip-version-check --all \
      | sed -n -e 's,^pip==,,p' | egrep -o '^[0-9]+'
  )
  if [ "$pipmajorversion" -lt 9 ] ; then
    $pip install -U pip
  fi
  for i in 1 2 ; do
    for pkg in $( $pip list --outdated --format=freeze | cut -d= -f1 | sort_with_first ) ; do
      if ! (set -x ; $pip install -U "$pkg" ) ; then
        troublepkgs+=( "$pkg" )
      fi
    done
    if [ ${#troublepkgs[@]} -gt 0 ] ; then
      echo Trouble packages for "$pip": "${troublepkgs[@]}"
    fi
  done
}

for v in $( pyenv versions | good_xxenv_versions ) ; do
  PYENV_VERSION=${v} pyenv version 
  PYENV_VERSION=${v} pip_upgrade pip
done