Update pyenv shims

fix-pyenv-shims.rb

#!/usr/bin/env ruby

# Updates path to Python executables in ~/.pyenv/shims. `brew upgrade` breaks
# them. Set the correct versions in the EXPECTED and REPLACED variables below
# and run in ~/.pyenv/shims. WARNING! It replaces the files, not making any
# backups. Use at your own risk!

EXPECTED = <<~EOS.chomp
  exec "/usr/local/Cellar/pyenv/1.2.13/libexec/pyenv" exec "$program" "$@"
EOS
REPLACED = <<~EOS.chomp
  exec "/usr/local/Cellar/pyenv/1.2.13_1/libexec/pyenv" exec "$program" "$@"
EOS

Dir.entries('.').each do |entry|
  next if %w(. ..).include?(entry)

  lines = []
  File.open(entry, 'r') do |file|
    file.each_line do |line|
      chomped_line = line.chomp
      lines << (chomped_line == EXPECTED ? REPLACED : chomped_line)
    end
  end
  
  File.write("#{entry}", lines.join("\n"))
end