brew/Library/Homebrew/config.rb

if ENV["HOMEBREW_BREW_FILE"]
  # Path to `bin/brew` main executable in {HOMEBREW_PREFIX}
  HOMEBREW_BREW_FILE = Pathname.new(ENV["HOMEBREW_BREW_FILE"])
else
  odie "HOMEBREW_BREW_FILE was not exported! Please call bin/brew directly!"
end

# Where we link under
HOMEBREW_PREFIX = Pathname.new(ENV["HOMEBREW_PREFIX"])

# Where .git is found
HOMEBREW_REPOSITORY = Pathname.new(ENV["HOMEBREW_REPOSITORY"])

# Where we store most of Homebrew, taps, and various metadata
HOMEBREW_LIBRARY = Pathname.new(ENV["HOMEBREW_LIBRARY"])

# Where wrapper scripts for Git, Subversion, and various build tools are stored
HOMEBREW_ENV_PATH = HOMEBREW_LIBRARY/"ENV"

# Where we store lock files
HOMEBREW_LOCK_DIR = HOMEBREW_LIBRARY/"Locks"

# Where we store built products
HOMEBREW_CELLAR = Pathname.new(ENV["HOMEBREW_CELLAR"])

# Where downloads (bottles, source tarballs, etc.) are cached
HOMEBREW_CACHE = Pathname.new(ENV["HOMEBREW_CACHE"])

# Where brews installed via URL are cached
HOMEBREW_CACHE_FORMULA = HOMEBREW_CACHE/"Formula"

# Where build, postinstall, and test logs of formulae are written to
HOMEBREW_LOGS = Pathname.new(ENV["HOMEBREW_LOGS"] || "~/Library/Logs/Homebrew/").expand_path

# Must use /tmp instead of $TMPDIR because long paths break Unix domain sockets
HOMEBREW_TEMP = Pathname.new(ENV.fetch("HOMEBREW_TEMP", "/tmp"))

unless defined? HOMEBREW_LIBRARY_PATH
  # Root of the Homebrew code base
  HOMEBREW_LIBRARY_PATH = Pathname.new(__FILE__).realpath.parent
end

# Load path used by standalone scripts to access the Homebrew code base
HOMEBREW_LOAD_PATH = HOMEBREW_LIBRARY_PATH