This file is used for any pre-installation commands when a spell is installed with resurrect.
PRE_RESURRECT example of "ghc" spell:
# We need to backup package.conf and package.conf.old before resurrection message "${MESSAGE_COLOR}Backuping package.conf and package.conf.old...${DEFAULT_COLOR}" GHC_VERSION=$(ghc --version | tr -d ' ,[:alpha:]') GHC_DIR=${INSTALL_ROOT}/usr/lib/ghc-${GHC_VERSION} cp -v ${GHC_DIR}/package.conf ${GHC_DIR}/package.conf.bak cp -v ${GHC_DIR}/package.conf.old ${GHC_DIR}/package.conf.old.bak