From 3e98625d9112396e9a95a1bc075783025f18ebe9 Mon Sep 17 00:00:00 2001
From: neo <arklove@qq.com>
Date: Fri, 15 Jan 2021 01:06:36 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E6=9B=B4=E6=96=B0=E8=84=9A=E6=9C=AC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 install-tsinghua.sh | 730 ++++++++++++++++++++++++++++++++++++++++++++
 install.sh          |   4 +-
 lib/install.sh      | 727 +++++++++++++++++++++++++++++++++++++++++++
 lib/uninstall.sh    | 399 ++++++++++++++++++++++++
 uninstall.sh        |   6 +-
 5 files changed, 1863 insertions(+), 3 deletions(-)
 create mode 100755 install-tsinghua.sh
 create mode 100755 lib/install.sh
 create mode 100755 lib/uninstall.sh

diff --git a/install-tsinghua.sh b/install-tsinghua.sh
new file mode 100755
index 0000000..878fd75
--- /dev/null
+++ b/install-tsinghua.sh
@@ -0,0 +1,730 @@
+#!/bin/bash
+set -u
+
+# Check if script is run non-interactively (e.g. CI)
+# If it is run non-interactively we should not prompt for passwords.
+if [[ ! -t 0 || -n "${CI-}" ]]; then
+  NONINTERACTIVE=1
+fi
+
+abort() {
+  printf "%s\n" "$1"
+  exit 1
+}
+
+# First check OS.
+OS="$(uname)"
+if [[ "$OS" == "Linux" ]]; then
+  HOMEBREW_ON_LINUX=1
+elif [[ "$OS" != "Darwin" ]]; then
+  abort "Homebrew is only supported on macOS and Linux."
+fi
+
+UNAME_MACHINE="$(uname -m)"
+
+# Required installation paths. To install elsewhere (which is unsupported)
+# you can untar https://github.com/Homebrew/brew/tarball/master
+# anywhere you like.
+if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
+  if [[ "$UNAME_MACHINE" == "arm64" ]]; then
+    # On ARM macOS, this script installs to /opt/homebrew only
+    HOMEBREW_PREFIX="/opt/homebrew"
+    HOMEBREW_REPOSITORY="${HOMEBREW_PREFIX}"
+  else
+    # On Intel macOS, this script installs to /usr/local only
+    HOMEBREW_PREFIX="/usr/local"
+    HOMEBREW_REPOSITORY="${HOMEBREW_PREFIX}/Homebrew"
+  fi
+  HOMEBREW_CACHE="${HOME}/Library/Caches/Homebrew"
+  #changed HOMEBREW_CORE_GIT_REMOTE="https://github.com/Homebrew/homebrew-core"
+  HOMEBREW_CORE_GIT_REMOTE="https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-core.git"
+
+  STAT="stat -f"
+  CHOWN="/usr/sbin/chown"
+  CHGRP="/usr/bin/chgrp"
+  GROUP="admin"
+  TOUCH="/usr/bin/touch"
+else
+  # On Linux, it installs to /home/linuxbrew/.linuxbrew if you have sudo access
+  # and ~/.linuxbrew (which is unsupported) if run interactively.
+  HOMEBREW_PREFIX_DEFAULT="/home/linuxbrew/.linuxbrew"
+  HOMEBREW_CACHE="${HOME}/.cache/Homebrew"
+  #changed HOMEBREW_CORE_GIT_REMOTE="https://github.com/Homebrew/linuxbrew-core"
+  HOMEBREW_CORE_GIT_REMOTE="https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-core.git"
+
+  STAT="stat --printf"
+  CHOWN="/bin/chown"
+  CHGRP="/bin/chgrp"
+  GROUP="$(id -gn)"
+  TOUCH="/bin/touch"
+fi
+#changed HOMEBREW_BREW_GIT_REMOTE="https://github.com/Homebrew/brew"
+HOMEBREW_BREW_GIT_REMOTE="https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/brew.git"
+
+# TODO: bump version when new macOS is released or announced
+MACOS_NEWEST_UNSUPPORTED="12.0"
+# TODO: bump version when new macOS is released
+MACOS_OLDEST_SUPPORTED="10.14"
+
+# For Homebrew on Linux
+REQUIRED_RUBY_VERSION=2.6  # https://github.com/Homebrew/brew/pull/6556
+REQUIRED_GLIBC_VERSION=2.13  # https://docs.brew.sh/Homebrew-on-Linux#requirements
+
+# no analytics during installation
+export HOMEBREW_NO_ANALYTICS_THIS_RUN=1
+export HOMEBREW_NO_ANALYTICS_MESSAGE_OUTPUT=1
+
+# string formatters
+if [[ -t 1 ]]; then
+  tty_escape() { printf "\033[%sm" "$1"; }
+else
+  tty_escape() { :; }
+fi
+tty_mkbold() { tty_escape "1;$1"; }
+tty_underline="$(tty_escape "4;39")"
+tty_blue="$(tty_mkbold 34)"
+tty_red="$(tty_mkbold 31)"
+tty_bold="$(tty_mkbold 39)"
+tty_reset="$(tty_escape 0)"
+
+have_sudo_access() {
+  local -a args
+  if [[ -n "${SUDO_ASKPASS-}" ]]; then
+    args=("-A")
+  elif [[ -n "${NONINTERACTIVE-}" ]]; then
+    args=("-n")
+  fi
+
+  if [[ -z "${HAVE_SUDO_ACCESS-}" ]]; then
+    if [[ -n "${args[*]-}" ]]; then
+      SUDO="/usr/bin/sudo ${args[*]}"
+    else
+      SUDO="/usr/bin/sudo"
+    fi
+    if [[ -n "${NONINTERACTIVE-}" ]]; then
+      ${SUDO} -l mkdir &>/dev/null
+    else
+      ${SUDO} -v && ${SUDO} -l mkdir &>/dev/null
+    fi
+    HAVE_SUDO_ACCESS="$?"
+  fi
+
+  if [[ -z "${HOMEBREW_ON_LINUX-}" ]] && [[ "$HAVE_SUDO_ACCESS" -ne 0 ]]; then
+    abort "Need sudo access on macOS (e.g. the user $USER to be an Administrator)!"
+  fi
+
+  return "$HAVE_SUDO_ACCESS"
+}
+
+shell_join() {
+  local arg
+  printf "%s" "$1"
+  shift
+  for arg in "$@"; do
+    printf " "
+    printf "%s" "${arg// /\ }"
+  done
+}
+
+chomp() {
+  printf "%s" "${1/"$'\n'"/}"
+}
+
+ohai() {
+  printf "${tty_blue}==>${tty_bold} %s${tty_reset}\n" "$(shell_join "$@")"
+}
+
+warn() {
+  printf "${tty_red}Warning${tty_reset}: %s\n" "$(chomp "$1")"
+}
+
+execute() {
+  if ! "$@"; then
+    abort "$(printf "Failed during: %s" "$(shell_join "$@")")"
+  fi
+}
+
+execute_sudo() {
+  local -a args=("$@")
+  if have_sudo_access; then
+    if [[ -n "${SUDO_ASKPASS-}" ]]; then
+      args=("-A" "${args[@]}")
+    fi
+    ohai "/usr/bin/sudo" "${args[@]}"
+    execute "/usr/bin/sudo" "${args[@]}"
+  else
+    ohai "${args[@]}"
+    execute "${args[@]}"
+  fi
+}
+
+getc() {
+  local save_state
+  save_state=$(/bin/stty -g)
+  /bin/stty raw -echo
+  IFS= read -r -n 1 -d '' "$@"
+  /bin/stty "$save_state"
+}
+
+wait_for_user() {
+  local c
+  echo
+  echo "Press RETURN to continue or any other key to abort"
+  getc c
+  # we test for \r and \n because some stuff does \r instead
+  if ! [[ "$c" == $'\r' || "$c" == $'\n' ]]; then
+    exit 1
+  fi
+}
+
+major_minor() {
+  echo "${1%%.*}.$(x="${1#*.}"; echo "${x%%.*}")"
+}
+
+version_gt() {
+  [[ "${1%.*}" -gt "${2%.*}" ]] || [[ "${1%.*}" -eq "${2%.*}" && "${1#*.}" -gt "${2#*.}" ]]
+}
+version_ge() {
+  [[ "${1%.*}" -gt "${2%.*}" ]] || [[ "${1%.*}" -eq "${2%.*}" && "${1#*.}" -ge "${2#*.}" ]]
+}
+version_lt() {
+  [[ "${1%.*}" -lt "${2%.*}" ]] || [[ "${1%.*}" -eq "${2%.*}" && "${1#*.}" -lt "${2#*.}" ]]
+}
+
+should_install_command_line_tools() {
+  if [[ -n "${HOMEBREW_ON_LINUX-}" ]]; then
+    return 1
+  fi
+
+  if version_gt "$macos_version" "10.13"; then
+    ! [[ -e "/Library/Developer/CommandLineTools/usr/bin/git" ]]
+  else
+    ! [[ -e "/Library/Developer/CommandLineTools/usr/bin/git" ]] ||
+      ! [[ -e "/usr/include/iconv.h" ]]
+  fi
+}
+
+get_permission() {
+  $STAT "%A" "$1"
+}
+
+user_only_chmod() {
+  [[ -d "$1" ]] && [[ "$(get_permission "$1")" != "755" ]]
+}
+
+exists_but_not_writable() {
+  [[ -e "$1" ]] && ! [[ -r "$1" && -w "$1" && -x "$1" ]]
+}
+
+get_owner() {
+  $STAT "%u" "$1"
+}
+
+file_not_owned() {
+  [[ "$(get_owner "$1")" != "$(id -u)" ]]
+}
+
+get_group() {
+  $STAT "%g" "$1"
+}
+
+file_not_grpowned() {
+  [[ " $(id -G "$USER") " != *" $(get_group "$1") "*  ]]
+}
+
+# Please sync with 'test_ruby()' in 'Library/Homebrew/utils/ruby.sh' from Homebrew/brew repository.
+test_ruby() {
+  if [[ ! -x $1 ]]
+  then
+    return 1
+  fi
+
+  "$1" --enable-frozen-string-literal --disable=gems,did_you_mean,rubyopt -rrubygems -e \
+    "abort if Gem::Version.new(RUBY_VERSION.to_s.dup).to_s.split('.').first(2) != \
+              Gem::Version.new('$REQUIRED_RUBY_VERSION').to_s.split('.').first(2)" 2>/dev/null
+}
+
+no_usable_ruby() {
+  local ruby_exec
+  IFS=$'\n' # Do word splitting on new lines only
+  for ruby_exec in $(which -a ruby); do
+    if test_ruby "$ruby_exec"; then
+      IFS=$' \t\n' # Restore IFS to its default value
+      return 1
+    fi
+  done
+  IFS=$' \t\n' # Restore IFS to its default value
+  return 0
+}
+
+outdated_glibc() {
+  local glibc_version
+  glibc_version=$(ldd --version | head -n1 | grep -o '[0-9.]*$' | grep -o '^[0-9]\+\.[0-9]\+')
+  version_lt "$glibc_version" "$REQUIRED_GLIBC_VERSION"
+}
+
+if [[ -n "${HOMEBREW_ON_LINUX-}" ]] && no_usable_ruby && outdated_glibc
+then
+    abort "$(cat <<-EOFABORT
+	Homebrew requires Ruby $REQUIRED_RUBY_VERSION which was not found on your system.
+	Homebrew portable Ruby requires Glibc version $REQUIRED_GLIBC_VERSION or newer,
+	and your Glibc version is too old.
+	See ${tty_underline}https://docs.brew.sh/Homebrew-on-Linux#requirements${tty_reset}
+	Install Ruby $REQUIRED_RUBY_VERSION and add its location to your PATH.
+	EOFABORT
+    )"
+fi
+
+# USER isn't always set so provide a fall back for the installer and subprocesses.
+if [[ -z "${USER-}" ]]; then
+  USER="$(chomp "$(id -un)")"
+  export USER
+fi
+
+# Invalidate sudo timestamp before exiting (if it wasn't active before).
+if ! /usr/bin/sudo -n -v 2>/dev/null; then
+  trap '/usr/bin/sudo -k' EXIT
+fi
+
+# Things can fail later if `pwd` doesn't exist.
+# Also sudo prints a warning message for no good reason
+cd "/usr" || exit 1
+
+####################################################################### script
+if ! command -v git >/dev/null; then
+    abort "$(cat <<EOABORT
+You must install Git before installing Homebrew. See:
+  ${tty_underline}https://docs.brew.sh/Installation${tty_reset}
+EOABORT
+)"
+fi
+
+if ! command -v curl >/dev/null; then
+    abort "$(cat <<EOABORT
+You must install cURL before installing Homebrew. See:
+  ${tty_underline}https://docs.brew.sh/Installation${tty_reset}
+EOABORT
+)"
+fi
+
+if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
+  have_sudo_access
+else
+  if [[ -n "${NONINTERACTIVE-}" ]] ||
+     [[ -w "${HOMEBREW_PREFIX_DEFAULT}" ]] ||
+     [[ -w "/home/linuxbrew" ]] ||
+     [[ -w "/home" ]]; then
+    HOMEBREW_PREFIX="$HOMEBREW_PREFIX_DEFAULT"
+  else
+    trap exit SIGINT
+    if ! /usr/bin/sudo -n -v &>/dev/null; then
+      ohai "Select the Homebrew installation directory"
+      echo "- ${tty_bold}Enter your password${tty_reset} to install to ${tty_underline}${HOMEBREW_PREFIX_DEFAULT}${tty_reset} (${tty_bold}recommended${tty_reset})"
+      echo "- ${tty_bold}Press Control-D${tty_reset} to install to ${tty_underline}$HOME/.linuxbrew${tty_reset}"
+      echo "- ${tty_bold}Press Control-C${tty_reset} to cancel installation"
+    fi
+    if have_sudo_access; then
+      HOMEBREW_PREFIX="$HOMEBREW_PREFIX_DEFAULT"
+    else
+      HOMEBREW_PREFIX="$HOME/.linuxbrew"
+    fi
+    trap - SIGINT
+  fi
+  HOMEBREW_REPOSITORY="${HOMEBREW_PREFIX}/Homebrew"
+fi
+HOMEBREW_CORE="${HOMEBREW_REPOSITORY}/Library/Taps/homebrew/homebrew-core"
+
+if [[ "${EUID:-${UID}}" == "0" ]]; then
+  abort "Don't run this as root!"
+elif [[ -d "${HOMEBREW_PREFIX}" && ! -x "${HOMEBREW_PREFIX}" ]]; then
+  abort "$(cat <<EOABORT
+The Homebrew prefix, ${HOMEBREW_PREFIX}, exists but is not searchable.
+If this is not intentional, please restore the default permissions and
+try running the installer again:
+    sudo chmod 775 ${HOMEBREW_PREFIX}
+EOABORT
+)"
+fi
+
+if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
+  # On macOS, support 64-bit Intel and ARM
+  if [[ "$UNAME_MACHINE" != "arm64" ]] && [[ "$UNAME_MACHINE" != "x86_64" ]]; then
+    abort "Homebrew is only supported on Intel and ARM processors!"
+  fi
+else
+  # On Linux, support only 64-bit Intel
+  if [[ "$UNAME_MACHINE" == "arm64" ]]; then
+    abort "$(cat <<EOABORT
+Homebrew on Linux is not supported on ARM processors.
+You can try an alternate installation method instead:
+  ${tty_underline}https://docs.brew.sh/Homebrew-on-Linux#arm${tty_reset}
+EOABORT
+)"
+  elif [[ "$UNAME_MACHINE" != "x86_64" ]]; then
+    abort "Homebrew on Linux is only supported on Intel processors!"
+  fi
+fi
+
+if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
+  macos_version="$(major_minor "$(/usr/bin/sw_vers -productVersion)")"
+  if version_lt "$macos_version" "10.7"; then
+    abort "$(cat <<EOABORT
+Your Mac OS X version is too old. See:
+  ${tty_underline}https://github.com/mistydemeo/tigerbrew${tty_reset}
+EOABORT
+)"
+  elif version_lt "$macos_version" "10.10"; then
+    abort "Your OS X version is too old"
+  elif version_ge "$macos_version" "$MACOS_NEWEST_UNSUPPORTED" || \
+    version_lt "$macos_version" "$MACOS_OLDEST_SUPPORTED"; then
+    who="We"
+    what=""
+    if version_ge "$macos_version" "$MACOS_NEWEST_UNSUPPORTED"; then
+      what="pre-release version"
+    else
+      who+=" (and Apple)"
+      what="old version"
+    fi
+    ohai "You are using macOS ${macos_version}."
+    ohai "${who} do not provide support for this ${what}."
+
+    echo "$(cat <<EOS
+This installation may not succeed.
+After installation, you will encounter build failures with some formulae.
+Please create pull requests instead of asking for help on Homebrew\'s GitHub,
+Twitter or IRC. You are responsible for resolving any issues you experience
+while you are running this ${what}.
+EOS
+)
+"
+  fi
+fi
+
+ohai "This script will install:"
+echo "${HOMEBREW_PREFIX}/bin/brew"
+echo "${HOMEBREW_PREFIX}/share/doc/homebrew"
+echo "${HOMEBREW_PREFIX}/share/man/man1/brew.1"
+echo "${HOMEBREW_PREFIX}/share/zsh/site-functions/_brew"
+echo "${HOMEBREW_PREFIX}/etc/bash_completion.d/brew"
+echo "${HOMEBREW_REPOSITORY}"
+
+# Keep relatively in sync with
+# https://github.com/Homebrew/brew/blob/master/Library/Homebrew/keg.rb
+directories=(bin etc include lib sbin share opt var
+             Frameworks
+             etc/bash_completion.d lib/pkgconfig
+             share/aclocal share/doc share/info share/locale share/man
+             share/man/man1 share/man/man2 share/man/man3 share/man/man4
+             share/man/man5 share/man/man6 share/man/man7 share/man/man8
+             var/log var/homebrew var/homebrew/linked
+             bin/brew)
+group_chmods=()
+for dir in "${directories[@]}"; do
+  if exists_but_not_writable "${HOMEBREW_PREFIX}/${dir}"; then
+    group_chmods+=("${HOMEBREW_PREFIX}/${dir}")
+  fi
+done
+
+# zsh refuses to read from these directories if group writable
+directories=(share/zsh share/zsh/site-functions)
+zsh_dirs=()
+for dir in "${directories[@]}"; do
+  zsh_dirs+=("${HOMEBREW_PREFIX}/${dir}")
+done
+
+directories=(bin etc include lib sbin share var opt
+             share/zsh share/zsh/site-functions
+             var/homebrew var/homebrew/linked
+             Cellar Caskroom Frameworks)
+mkdirs=()
+for dir in "${directories[@]}"; do
+  if ! [[ -d "${HOMEBREW_PREFIX}/${dir}" ]]; then
+    mkdirs+=("${HOMEBREW_PREFIX}/${dir}")
+  fi
+done
+
+user_chmods=()
+if [[ "${#zsh_dirs[@]}" -gt 0 ]]; then
+  for dir in "${zsh_dirs[@]}"; do
+    if user_only_chmod "${dir}"; then
+      user_chmods+=("${dir}")
+    fi
+  done
+fi
+
+chmods=()
+if [[ "${#group_chmods[@]}" -gt 0 ]]; then
+  chmods+=("${group_chmods[@]}")
+fi
+if [[ "${#user_chmods[@]}" -gt 0 ]]; then
+  chmods+=("${user_chmods[@]}")
+fi
+
+chowns=()
+chgrps=()
+if [[ "${#chmods[@]}" -gt 0 ]]; then
+  for dir in "${chmods[@]}"; do
+    if file_not_owned "${dir}"; then
+      chowns+=("${dir}")
+    fi
+    if file_not_grpowned "${dir}"; then
+      chgrps+=("${dir}")
+    fi
+  done
+fi
+
+if [[ "${#group_chmods[@]}" -gt 0 ]]; then
+  ohai "The following existing directories will be made group writable:"
+  printf "%s\n" "${group_chmods[@]}"
+fi
+if [[ "${#user_chmods[@]}" -gt 0 ]]; then
+  ohai "The following existing directories will be made writable by user only:"
+  printf "%s\n" "${user_chmods[@]}"
+fi
+if [[ "${#chowns[@]}" -gt 0 ]]; then
+  ohai "The following existing directories will have their owner set to ${tty_underline}${USER}${tty_reset}:"
+  printf "%s\n" "${chowns[@]}"
+fi
+if [[ "${#chgrps[@]}" -gt 0 ]]; then
+  ohai "The following existing directories will have their group set to ${tty_underline}${GROUP}${tty_reset}:"
+  printf "%s\n" "${chgrps[@]}"
+fi
+if [[ "${#mkdirs[@]}" -gt 0 ]]; then
+  ohai "The following new directories will be created:"
+  printf "%s\n" "${mkdirs[@]}"
+fi
+
+if should_install_command_line_tools; then
+  ohai "The Xcode Command Line Tools will be installed."
+fi
+
+if [[ -z "${NONINTERACTIVE-}" ]]; then
+  wait_for_user
+fi
+
+if [[ -d "${HOMEBREW_PREFIX}" ]]; then
+  if [[ "${#chmods[@]}" -gt 0 ]]; then
+    execute_sudo "/bin/chmod" "u+rwx" "${chmods[@]}"
+  fi
+  if [[ "${#group_chmods[@]}" -gt 0 ]]; then
+    execute_sudo "/bin/chmod" "g+rwx" "${group_chmods[@]}"
+  fi
+  if [[ "${#user_chmods[@]}" -gt 0 ]]; then
+    execute_sudo "/bin/chmod" "755" "${user_chmods[@]}"
+  fi
+  if [[ "${#chowns[@]}" -gt 0 ]]; then
+    execute_sudo "$CHOWN" "$USER" "${chowns[@]}"
+  fi
+  if [[ "${#chgrps[@]}" -gt 0 ]]; then
+    execute_sudo "$CHGRP" "$GROUP" "${chgrps[@]}"
+  fi
+else
+  execute_sudo "/bin/mkdir" "-p" "${HOMEBREW_PREFIX}"
+  if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
+    execute_sudo "$CHOWN" "root:wheel" "${HOMEBREW_PREFIX}"
+  else
+    execute_sudo "$CHOWN" "$USER:$GROUP" "${HOMEBREW_PREFIX}"
+  fi
+fi
+
+if [[ "${#mkdirs[@]}" -gt 0 ]]; then
+  execute_sudo "/bin/mkdir" "-p" "${mkdirs[@]}"
+  execute_sudo "/bin/chmod" "g+rwx" "${mkdirs[@]}"
+  execute_sudo "$CHOWN" "$USER" "${mkdirs[@]}"
+  execute_sudo "$CHGRP" "$GROUP" "${mkdirs[@]}"
+fi
+
+if ! [[ -d "${HOMEBREW_REPOSITORY}" ]]; then
+  execute_sudo "/bin/mkdir" "-p" "${HOMEBREW_REPOSITORY}"
+fi
+execute_sudo "$CHOWN" "$USER:$GROUP" "${HOMEBREW_REPOSITORY}"
+
+if ! [[ -d "${HOMEBREW_CACHE}" ]]; then
+  if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
+    execute_sudo "/bin/mkdir" "-p" "${HOMEBREW_CACHE}"
+  else
+    execute "/bin/mkdir" "-p" "${HOMEBREW_CACHE}"
+  fi
+fi
+if exists_but_not_writable "${HOMEBREW_CACHE}"; then
+  execute_sudo "/bin/chmod" "g+rwx" "${HOMEBREW_CACHE}"
+fi
+if file_not_owned "${HOMEBREW_CACHE}"; then
+  execute_sudo "$CHOWN" "$USER" "${HOMEBREW_CACHE}"
+fi
+if file_not_grpowned "${HOMEBREW_CACHE}"; then
+  execute_sudo "$CHGRP" "$GROUP" "${HOMEBREW_CACHE}"
+fi
+if [[ -d "${HOMEBREW_CACHE}" ]]; then
+  execute "$TOUCH" "${HOMEBREW_CACHE}/.cleaned"
+fi
+
+if should_install_command_line_tools && version_ge "$macos_version" "10.13"; then
+  ohai "Searching online for the Command Line Tools"
+  # This temporary file prompts the 'softwareupdate' utility to list the Command Line Tools
+  clt_placeholder="/tmp/.com.apple.dt.CommandLineTools.installondemand.in-progress"
+  execute_sudo "$TOUCH" "$clt_placeholder"
+
+  clt_label_command="/usr/sbin/softwareupdate -l |
+                      grep -B 1 -E 'Command Line Tools' |
+                      awk -F'*' '/^ *\\*/ {print \$2}' |
+                      sed -e 's/^ *Label: //' -e 's/^ *//' |
+                      sort -V |
+                      tail -n1"
+  clt_label="$(chomp "$(/bin/bash -c "$clt_label_command")")"
+
+  if [[ -n "$clt_label" ]]; then
+    ohai "Installing $clt_label"
+    execute_sudo "/usr/sbin/softwareupdate" "-i" "$clt_label"
+    execute_sudo "/bin/rm" "-f" "$clt_placeholder"
+    execute_sudo "/usr/bin/xcode-select" "--switch" "/Library/Developer/CommandLineTools"
+  fi
+fi
+
+# Headless install may have failed, so fallback to original 'xcode-select' method
+if should_install_command_line_tools && test -t 0; then
+  ohai "Installing the Command Line Tools (expect a GUI popup):"
+  execute_sudo "/usr/bin/xcode-select" "--install"
+  echo "Press any key when the installation has completed."
+  getc
+  execute_sudo "/usr/bin/xcode-select" "--switch" "/Library/Developer/CommandLineTools"
+fi
+
+if [[ -z "${HOMEBREW_ON_LINUX-}" ]] && ! output="$(/usr/bin/xcrun clang 2>&1)" && [[ "$output" == *"license"* ]]; then
+  abort "$(cat <<EOABORT
+You have not agreed to the Xcode license.
+Before running the installer again please agree to the license by opening
+Xcode.app or running:
+    sudo xcodebuild -license
+EOABORT
+)"
+fi
+
+ohai "Downloading and installing Homebrew..."
+(
+  cd "${HOMEBREW_REPOSITORY}" >/dev/null || return
+
+  # we do it in four steps to avoid merge errors when reinstalling
+  execute "git" "init" "-q"
+
+  # "git remote add" will fail if the remote is defined in the global config
+  execute "git" "config" "remote.origin.url" "${HOMEBREW_BREW_GIT_REMOTE}"
+  execute "git" "config" "remote.origin.fetch" "+refs/heads/*:refs/remotes/origin/*"
+
+  # ensure we don't munge line endings on checkout
+  execute "git" "config" "core.autocrlf" "false"
+
+  execute "git" "fetch" "--force" "origin"
+  execute "git" "fetch" "--force" "--tags" "origin"
+
+  execute "git" "reset" "--hard" "origin/master"
+
+  if [[ "${HOMEBREW_REPOSITORY}" != "${HOMEBREW_PREFIX}" ]]; then
+    execute "ln" "-sf" "${HOMEBREW_REPOSITORY}/bin/brew" "${HOMEBREW_PREFIX}/bin/brew"
+  fi
+
+  if [[ ! -d "${HOMEBREW_CORE}" ]]; then
+    ohai "Tapping homebrew/core"
+    (
+      execute "/bin/mkdir" "-p" "${HOMEBREW_CORE}"
+      cd "${HOMEBREW_CORE}" >/dev/null || return
+
+      execute "git" "init" "-q"
+      execute "git" "config" "remote.origin.url" "${HOMEBREW_CORE_GIT_REMOTE}"
+      execute "git" "config" "remote.origin.fetch" "+refs/heads/*:refs/remotes/origin/*"
+      execute "git" "config" "core.autocrlf" "false"
+      execute "git" "fetch" "--force" "origin" "refs/heads/master:refs/remotes/origin/master"
+      execute "git" "remote" "set-head" "origin" "--auto" >/dev/null
+      execute "git" "reset" "--hard" "origin/master"
+
+      cd "${HOMEBREW_REPOSITORY}" >/dev/null || return
+    ) || exit 1
+  fi
+
+  execute "${HOMEBREW_PREFIX}/bin/brew" "update" "--force" "--quiet"
+) || exit 1
+
+if [[ ":${PATH}:" != *":${HOMEBREW_PREFIX}/bin:"* ]]; then
+  warn "${HOMEBREW_PREFIX}/bin is not in your PATH."
+fi
+
+ohai "Installation successful!"
+echo
+
+# Use the shell's audible bell.
+if [[ -t 1 ]]; then
+  printf "\a"
+fi
+
+# Use an extra newline and bold to avoid this being missed.
+ohai "Homebrew has enabled anonymous aggregate formulae and cask analytics."
+echo "$(cat <<EOS
+${tty_bold}Read the analytics documentation (and how to opt-out) here:
+  ${tty_underline}https://docs.brew.sh/Analytics${tty_reset}
+No analytics data has been sent yet (or will be during this \`install\` run).
+EOS
+)
+"
+
+ohai "Homebrew is run entirely by unpaid volunteers. Please consider donating:"
+echo "$(cat <<EOS
+  ${tty_underline}https://github.com/Homebrew/brew#donations${tty_reset}
+EOS
+)
+"
+
+(
+  cd "${HOMEBREW_REPOSITORY}" >/dev/null || return
+  execute "git" "config" "--replace-all" "homebrew.analyticsmessage" "true"
+  execute "git" "config" "--replace-all" "homebrew.caskanalyticsmessage" "true"
+) || exit 1
+
+ohai "Next steps:"
+if [[ "$UNAME_MACHINE" == "arm64" ]] || [[ -n "${HOMEBREW_ON_LINUX-}" ]]; then
+  case "$SHELL" in
+    */bash*)
+      if [[ -r "$HOME/.bash_profile" ]]; then
+        shell_profile="$HOME/.bash_profile"
+      else
+        shell_profile="$HOME/.profile"
+      fi
+      ;;
+    */zsh*)
+      shell_profile="$HOME/.zprofile"
+      ;;
+    *)
+      shell_profile="$HOME/.profile"
+      ;;
+  esac
+
+  cat <<EOS
+- Add Homebrew to your ${tty_bold}PATH${tty_reset} in ${tty_underline}${shell_profile}${tty_reset}:
+    echo 'eval \$(${HOMEBREW_PREFIX}/bin/brew shellenv)' >> ${shell_profile}
+    eval \$(${HOMEBREW_PREFIX}/bin/brew shellenv)
+EOS
+fi
+
+echo "- Run \`brew help\` to get started"
+echo "- Further documentation: "
+echo "    ${tty_underline}https://docs.brew.sh${tty_reset}"
+
+if [[ -n "${HOMEBREW_ON_LINUX-}" ]]; then
+  echo "- Install the Homebrew dependencies if you have sudo access:"
+
+  if [[ $(command -v apt-get) ]]; then
+    echo "    sudo apt-get install build-essential"
+  elif [[ $(command -v yum) ]]; then
+    echo "    sudo yum groupinstall 'Development Tools'"
+  elif [[ $(command -v pacman) ]]; then
+    echo "    sudo pacman -S base-devel"
+  elif [[ $(command -v apk) ]]; then
+    echo "    sudo apk add build-base"
+  fi
+
+  cat <<EOS
+    See ${tty_underline}https://docs.brew.sh/linux${tty_reset} for more information
+- We recommend that you install GCC:
+    brew install gcc
+
+EOS
+fi
diff --git a/install.sh b/install.sh
index fed2b80..6e3cfe1 100755
--- a/install.sh
+++ b/install.sh
@@ -37,7 +37,7 @@ if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
   fi
   HOMEBREW_CACHE="${HOME}/Library/Caches/Homebrew"
   #changed HOMEBREW_CORE_GIT_REMOTE="https://github.com/Homebrew/homebrew-core"
-  HOMEBREW_CORE_GIT_REMOTE="https://mirrors.ustc.edu.cn/homebrew-core.git/"
+  HOMEBREW_CORE_GIT_REMOTE="https://mirrors.ustc.edu.cn/homebrew-core.git"
 
   STAT="stat -f"
   CHOWN="/usr/sbin/chown"
@@ -50,7 +50,7 @@ else
   HOMEBREW_PREFIX_DEFAULT="/home/linuxbrew/.linuxbrew"
   HOMEBREW_CACHE="${HOME}/.cache/Homebrew"
   #changed HOMEBREW_CORE_GIT_REMOTE="https://github.com/Homebrew/linuxbrew-core"
-  HOMEBREW_CORE_GIT_REMOTE="https://mirrors.ustc.edu.cn/homebrew-core.git/"
+  HOMEBREW_CORE_GIT_REMOTE="https://mirrors.ustc.edu.cn/homebrew-core.git"
 
   STAT="stat --printf"
   CHOWN="/bin/chown"
diff --git a/lib/install.sh b/lib/install.sh
new file mode 100755
index 0000000..6d3596b
--- /dev/null
+++ b/lib/install.sh
@@ -0,0 +1,727 @@
+#!/bin/bash
+set -u
+
+# Check if script is run non-interactively (e.g. CI)
+# If it is run non-interactively we should not prompt for passwords.
+if [[ ! -t 0 || -n "${CI-}" ]]; then
+  NONINTERACTIVE=1
+fi
+
+abort() {
+  printf "%s\n" "$1"
+  exit 1
+}
+
+# First check OS.
+OS="$(uname)"
+if [[ "$OS" == "Linux" ]]; then
+  HOMEBREW_ON_LINUX=1
+elif [[ "$OS" != "Darwin" ]]; then
+  abort "Homebrew is only supported on macOS and Linux."
+fi
+
+UNAME_MACHINE="$(uname -m)"
+
+# Required installation paths. To install elsewhere (which is unsupported)
+# you can untar https://github.com/Homebrew/brew/tarball/master
+# anywhere you like.
+if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
+  if [[ "$UNAME_MACHINE" == "arm64" ]]; then
+    # On ARM macOS, this script installs to /opt/homebrew only
+    HOMEBREW_PREFIX="/opt/homebrew"
+    HOMEBREW_REPOSITORY="${HOMEBREW_PREFIX}"
+  else
+    # On Intel macOS, this script installs to /usr/local only
+    HOMEBREW_PREFIX="/usr/local"
+    HOMEBREW_REPOSITORY="${HOMEBREW_PREFIX}/Homebrew"
+  fi
+  HOMEBREW_CACHE="${HOME}/Library/Caches/Homebrew"
+  HOMEBREW_CORE_GIT_REMOTE="https://github.com/Homebrew/homebrew-core"
+
+  STAT="stat -f"
+  CHOWN="/usr/sbin/chown"
+  CHGRP="/usr/bin/chgrp"
+  GROUP="admin"
+  TOUCH="/usr/bin/touch"
+else
+  # On Linux, it installs to /home/linuxbrew/.linuxbrew if you have sudo access
+  # and ~/.linuxbrew (which is unsupported) if run interactively.
+  HOMEBREW_PREFIX_DEFAULT="/home/linuxbrew/.linuxbrew"
+  HOMEBREW_CACHE="${HOME}/.cache/Homebrew"
+  HOMEBREW_CORE_GIT_REMOTE="https://github.com/Homebrew/linuxbrew-core"
+
+  STAT="stat --printf"
+  CHOWN="/bin/chown"
+  CHGRP="/bin/chgrp"
+  GROUP="$(id -gn)"
+  TOUCH="/bin/touch"
+fi
+HOMEBREW_BREW_GIT_REMOTE="https://github.com/Homebrew/brew"
+
+# TODO: bump version when new macOS is released or announced
+MACOS_NEWEST_UNSUPPORTED="12.0"
+# TODO: bump version when new macOS is released
+MACOS_OLDEST_SUPPORTED="10.14"
+
+# For Homebrew on Linux
+REQUIRED_RUBY_VERSION=2.6  # https://github.com/Homebrew/brew/pull/6556
+REQUIRED_GLIBC_VERSION=2.13  # https://docs.brew.sh/Homebrew-on-Linux#requirements
+
+# no analytics during installation
+export HOMEBREW_NO_ANALYTICS_THIS_RUN=1
+export HOMEBREW_NO_ANALYTICS_MESSAGE_OUTPUT=1
+
+# string formatters
+if [[ -t 1 ]]; then
+  tty_escape() { printf "\033[%sm" "$1"; }
+else
+  tty_escape() { :; }
+fi
+tty_mkbold() { tty_escape "1;$1"; }
+tty_underline="$(tty_escape "4;39")"
+tty_blue="$(tty_mkbold 34)"
+tty_red="$(tty_mkbold 31)"
+tty_bold="$(tty_mkbold 39)"
+tty_reset="$(tty_escape 0)"
+
+have_sudo_access() {
+  local -a args
+  if [[ -n "${SUDO_ASKPASS-}" ]]; then
+    args=("-A")
+  elif [[ -n "${NONINTERACTIVE-}" ]]; then
+    args=("-n")
+  fi
+
+  if [[ -z "${HAVE_SUDO_ACCESS-}" ]]; then
+    if [[ -n "${args[*]-}" ]]; then
+      SUDO="/usr/bin/sudo ${args[*]}"
+    else
+      SUDO="/usr/bin/sudo"
+    fi
+    if [[ -n "${NONINTERACTIVE-}" ]]; then
+      ${SUDO} -l mkdir &>/dev/null
+    else
+      ${SUDO} -v && ${SUDO} -l mkdir &>/dev/null
+    fi
+    HAVE_SUDO_ACCESS="$?"
+  fi
+
+  if [[ -z "${HOMEBREW_ON_LINUX-}" ]] && [[ "$HAVE_SUDO_ACCESS" -ne 0 ]]; then
+    abort "Need sudo access on macOS (e.g. the user $USER to be an Administrator)!"
+  fi
+
+  return "$HAVE_SUDO_ACCESS"
+}
+
+shell_join() {
+  local arg
+  printf "%s" "$1"
+  shift
+  for arg in "$@"; do
+    printf " "
+    printf "%s" "${arg// /\ }"
+  done
+}
+
+chomp() {
+  printf "%s" "${1/"$'\n'"/}"
+}
+
+ohai() {
+  printf "${tty_blue}==>${tty_bold} %s${tty_reset}\n" "$(shell_join "$@")"
+}
+
+warn() {
+  printf "${tty_red}Warning${tty_reset}: %s\n" "$(chomp "$1")"
+}
+
+execute() {
+  if ! "$@"; then
+    abort "$(printf "Failed during: %s" "$(shell_join "$@")")"
+  fi
+}
+
+execute_sudo() {
+  local -a args=("$@")
+  if have_sudo_access; then
+    if [[ -n "${SUDO_ASKPASS-}" ]]; then
+      args=("-A" "${args[@]}")
+    fi
+    ohai "/usr/bin/sudo" "${args[@]}"
+    execute "/usr/bin/sudo" "${args[@]}"
+  else
+    ohai "${args[@]}"
+    execute "${args[@]}"
+  fi
+}
+
+getc() {
+  local save_state
+  save_state=$(/bin/stty -g)
+  /bin/stty raw -echo
+  IFS= read -r -n 1 -d '' "$@"
+  /bin/stty "$save_state"
+}
+
+wait_for_user() {
+  local c
+  echo
+  echo "Press RETURN to continue or any other key to abort"
+  getc c
+  # we test for \r and \n because some stuff does \r instead
+  if ! [[ "$c" == $'\r' || "$c" == $'\n' ]]; then
+    exit 1
+  fi
+}
+
+major_minor() {
+  echo "${1%%.*}.$(x="${1#*.}"; echo "${x%%.*}")"
+}
+
+version_gt() {
+  [[ "${1%.*}" -gt "${2%.*}" ]] || [[ "${1%.*}" -eq "${2%.*}" && "${1#*.}" -gt "${2#*.}" ]]
+}
+version_ge() {
+  [[ "${1%.*}" -gt "${2%.*}" ]] || [[ "${1%.*}" -eq "${2%.*}" && "${1#*.}" -ge "${2#*.}" ]]
+}
+version_lt() {
+  [[ "${1%.*}" -lt "${2%.*}" ]] || [[ "${1%.*}" -eq "${2%.*}" && "${1#*.}" -lt "${2#*.}" ]]
+}
+
+should_install_command_line_tools() {
+  if [[ -n "${HOMEBREW_ON_LINUX-}" ]]; then
+    return 1
+  fi
+
+  if version_gt "$macos_version" "10.13"; then
+    ! [[ -e "/Library/Developer/CommandLineTools/usr/bin/git" ]]
+  else
+    ! [[ -e "/Library/Developer/CommandLineTools/usr/bin/git" ]] ||
+      ! [[ -e "/usr/include/iconv.h" ]]
+  fi
+}
+
+get_permission() {
+  $STAT "%A" "$1"
+}
+
+user_only_chmod() {
+  [[ -d "$1" ]] && [[ "$(get_permission "$1")" != "755" ]]
+}
+
+exists_but_not_writable() {
+  [[ -e "$1" ]] && ! [[ -r "$1" && -w "$1" && -x "$1" ]]
+}
+
+get_owner() {
+  $STAT "%u" "$1"
+}
+
+file_not_owned() {
+  [[ "$(get_owner "$1")" != "$(id -u)" ]]
+}
+
+get_group() {
+  $STAT "%g" "$1"
+}
+
+file_not_grpowned() {
+  [[ " $(id -G "$USER") " != *" $(get_group "$1") "*  ]]
+}
+
+# Please sync with 'test_ruby()' in 'Library/Homebrew/utils/ruby.sh' from Homebrew/brew repository.
+test_ruby() {
+  if [[ ! -x $1 ]]
+  then
+    return 1
+  fi
+
+  "$1" --enable-frozen-string-literal --disable=gems,did_you_mean,rubyopt -rrubygems -e \
+    "abort if Gem::Version.new(RUBY_VERSION.to_s.dup).to_s.split('.').first(2) != \
+              Gem::Version.new('$REQUIRED_RUBY_VERSION').to_s.split('.').first(2)" 2>/dev/null
+}
+
+no_usable_ruby() {
+  local ruby_exec
+  IFS=$'\n' # Do word splitting on new lines only
+  for ruby_exec in $(which -a ruby); do
+    if test_ruby "$ruby_exec"; then
+      IFS=$' \t\n' # Restore IFS to its default value
+      return 1
+    fi
+  done
+  IFS=$' \t\n' # Restore IFS to its default value
+  return 0
+}
+
+outdated_glibc() {
+  local glibc_version
+  glibc_version=$(ldd --version | head -n1 | grep -o '[0-9.]*$' | grep -o '^[0-9]\+\.[0-9]\+')
+  version_lt "$glibc_version" "$REQUIRED_GLIBC_VERSION"
+}
+
+if [[ -n "${HOMEBREW_ON_LINUX-}" ]] && no_usable_ruby && outdated_glibc
+then
+    abort "$(cat <<-EOFABORT
+	Homebrew requires Ruby $REQUIRED_RUBY_VERSION which was not found on your system.
+	Homebrew portable Ruby requires Glibc version $REQUIRED_GLIBC_VERSION or newer,
+	and your Glibc version is too old.
+	See ${tty_underline}https://docs.brew.sh/Homebrew-on-Linux#requirements${tty_reset}
+	Install Ruby $REQUIRED_RUBY_VERSION and add its location to your PATH.
+	EOFABORT
+    )"
+fi
+
+# USER isn't always set so provide a fall back for the installer and subprocesses.
+if [[ -z "${USER-}" ]]; then
+  USER="$(chomp "$(id -un)")"
+  export USER
+fi
+
+# Invalidate sudo timestamp before exiting (if it wasn't active before).
+if ! /usr/bin/sudo -n -v 2>/dev/null; then
+  trap '/usr/bin/sudo -k' EXIT
+fi
+
+# Things can fail later if `pwd` doesn't exist.
+# Also sudo prints a warning message for no good reason
+cd "/usr" || exit 1
+
+####################################################################### script
+if ! command -v git >/dev/null; then
+    abort "$(cat <<EOABORT
+You must install Git before installing Homebrew. See:
+  ${tty_underline}https://docs.brew.sh/Installation${tty_reset}
+EOABORT
+)"
+fi
+
+if ! command -v curl >/dev/null; then
+    abort "$(cat <<EOABORT
+You must install cURL before installing Homebrew. See:
+  ${tty_underline}https://docs.brew.sh/Installation${tty_reset}
+EOABORT
+)"
+fi
+
+if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
+  have_sudo_access
+else
+  if [[ -n "${NONINTERACTIVE-}" ]] ||
+     [[ -w "${HOMEBREW_PREFIX_DEFAULT}" ]] ||
+     [[ -w "/home/linuxbrew" ]] ||
+     [[ -w "/home" ]]; then
+    HOMEBREW_PREFIX="$HOMEBREW_PREFIX_DEFAULT"
+  else
+    trap exit SIGINT
+    if ! /usr/bin/sudo -n -v &>/dev/null; then
+      ohai "Select the Homebrew installation directory"
+      echo "- ${tty_bold}Enter your password${tty_reset} to install to ${tty_underline}${HOMEBREW_PREFIX_DEFAULT}${tty_reset} (${tty_bold}recommended${tty_reset})"
+      echo "- ${tty_bold}Press Control-D${tty_reset} to install to ${tty_underline}$HOME/.linuxbrew${tty_reset}"
+      echo "- ${tty_bold}Press Control-C${tty_reset} to cancel installation"
+    fi
+    if have_sudo_access; then
+      HOMEBREW_PREFIX="$HOMEBREW_PREFIX_DEFAULT"
+    else
+      HOMEBREW_PREFIX="$HOME/.linuxbrew"
+    fi
+    trap - SIGINT
+  fi
+  HOMEBREW_REPOSITORY="${HOMEBREW_PREFIX}/Homebrew"
+fi
+HOMEBREW_CORE="${HOMEBREW_REPOSITORY}/Library/Taps/homebrew/homebrew-core"
+
+if [[ "${EUID:-${UID}}" == "0" ]]; then
+  abort "Don't run this as root!"
+elif [[ -d "${HOMEBREW_PREFIX}" && ! -x "${HOMEBREW_PREFIX}" ]]; then
+  abort "$(cat <<EOABORT
+The Homebrew prefix, ${HOMEBREW_PREFIX}, exists but is not searchable.
+If this is not intentional, please restore the default permissions and
+try running the installer again:
+    sudo chmod 775 ${HOMEBREW_PREFIX}
+EOABORT
+)"
+fi
+
+if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
+  # On macOS, support 64-bit Intel and ARM
+  if [[ "$UNAME_MACHINE" != "arm64" ]] && [[ "$UNAME_MACHINE" != "x86_64" ]]; then
+    abort "Homebrew is only supported on Intel and ARM processors!"
+  fi
+else
+  # On Linux, support only 64-bit Intel
+  if [[ "$UNAME_MACHINE" == "arm64" ]]; then
+    abort "$(cat <<EOABORT
+Homebrew on Linux is not supported on ARM processors.
+You can try an alternate installation method instead:
+  ${tty_underline}https://docs.brew.sh/Homebrew-on-Linux#arm${tty_reset}
+EOABORT
+)"
+  elif [[ "$UNAME_MACHINE" != "x86_64" ]]; then
+    abort "Homebrew on Linux is only supported on Intel processors!"
+  fi
+fi
+
+if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
+  macos_version="$(major_minor "$(/usr/bin/sw_vers -productVersion)")"
+  if version_lt "$macos_version" "10.7"; then
+    abort "$(cat <<EOABORT
+Your Mac OS X version is too old. See:
+  ${tty_underline}https://github.com/mistydemeo/tigerbrew${tty_reset}
+EOABORT
+)"
+  elif version_lt "$macos_version" "10.10"; then
+    abort "Your OS X version is too old"
+  elif version_ge "$macos_version" "$MACOS_NEWEST_UNSUPPORTED" || \
+    version_lt "$macos_version" "$MACOS_OLDEST_SUPPORTED"; then
+    who="We"
+    what=""
+    if version_ge "$macos_version" "$MACOS_NEWEST_UNSUPPORTED"; then
+      what="pre-release version"
+    else
+      who+=" (and Apple)"
+      what="old version"
+    fi
+    ohai "You are using macOS ${macos_version}."
+    ohai "${who} do not provide support for this ${what}."
+
+    echo "$(cat <<EOS
+This installation may not succeed.
+After installation, you will encounter build failures with some formulae.
+Please create pull requests instead of asking for help on Homebrew\'s GitHub,
+Twitter or IRC. You are responsible for resolving any issues you experience
+while you are running this ${what}.
+EOS
+)
+"
+  fi
+fi
+
+ohai "This script will install:"
+echo "${HOMEBREW_PREFIX}/bin/brew"
+echo "${HOMEBREW_PREFIX}/share/doc/homebrew"
+echo "${HOMEBREW_PREFIX}/share/man/man1/brew.1"
+echo "${HOMEBREW_PREFIX}/share/zsh/site-functions/_brew"
+echo "${HOMEBREW_PREFIX}/etc/bash_completion.d/brew"
+echo "${HOMEBREW_REPOSITORY}"
+
+# Keep relatively in sync with
+# https://github.com/Homebrew/brew/blob/master/Library/Homebrew/keg.rb
+directories=(bin etc include lib sbin share opt var
+             Frameworks
+             etc/bash_completion.d lib/pkgconfig
+             share/aclocal share/doc share/info share/locale share/man
+             share/man/man1 share/man/man2 share/man/man3 share/man/man4
+             share/man/man5 share/man/man6 share/man/man7 share/man/man8
+             var/log var/homebrew var/homebrew/linked
+             bin/brew)
+group_chmods=()
+for dir in "${directories[@]}"; do
+  if exists_but_not_writable "${HOMEBREW_PREFIX}/${dir}"; then
+    group_chmods+=("${HOMEBREW_PREFIX}/${dir}")
+  fi
+done
+
+# zsh refuses to read from these directories if group writable
+directories=(share/zsh share/zsh/site-functions)
+zsh_dirs=()
+for dir in "${directories[@]}"; do
+  zsh_dirs+=("${HOMEBREW_PREFIX}/${dir}")
+done
+
+directories=(bin etc include lib sbin share var opt
+             share/zsh share/zsh/site-functions
+             var/homebrew var/homebrew/linked
+             Cellar Caskroom Frameworks)
+mkdirs=()
+for dir in "${directories[@]}"; do
+  if ! [[ -d "${HOMEBREW_PREFIX}/${dir}" ]]; then
+    mkdirs+=("${HOMEBREW_PREFIX}/${dir}")
+  fi
+done
+
+user_chmods=()
+if [[ "${#zsh_dirs[@]}" -gt 0 ]]; then
+  for dir in "${zsh_dirs[@]}"; do
+    if user_only_chmod "${dir}"; then
+      user_chmods+=("${dir}")
+    fi
+  done
+fi
+
+chmods=()
+if [[ "${#group_chmods[@]}" -gt 0 ]]; then
+  chmods+=("${group_chmods[@]}")
+fi
+if [[ "${#user_chmods[@]}" -gt 0 ]]; then
+  chmods+=("${user_chmods[@]}")
+fi
+
+chowns=()
+chgrps=()
+if [[ "${#chmods[@]}" -gt 0 ]]; then
+  for dir in "${chmods[@]}"; do
+    if file_not_owned "${dir}"; then
+      chowns+=("${dir}")
+    fi
+    if file_not_grpowned "${dir}"; then
+      chgrps+=("${dir}")
+    fi
+  done
+fi
+
+if [[ "${#group_chmods[@]}" -gt 0 ]]; then
+  ohai "The following existing directories will be made group writable:"
+  printf "%s\n" "${group_chmods[@]}"
+fi
+if [[ "${#user_chmods[@]}" -gt 0 ]]; then
+  ohai "The following existing directories will be made writable by user only:"
+  printf "%s\n" "${user_chmods[@]}"
+fi
+if [[ "${#chowns[@]}" -gt 0 ]]; then
+  ohai "The following existing directories will have their owner set to ${tty_underline}${USER}${tty_reset}:"
+  printf "%s\n" "${chowns[@]}"
+fi
+if [[ "${#chgrps[@]}" -gt 0 ]]; then
+  ohai "The following existing directories will have their group set to ${tty_underline}${GROUP}${tty_reset}:"
+  printf "%s\n" "${chgrps[@]}"
+fi
+if [[ "${#mkdirs[@]}" -gt 0 ]]; then
+  ohai "The following new directories will be created:"
+  printf "%s\n" "${mkdirs[@]}"
+fi
+
+if should_install_command_line_tools; then
+  ohai "The Xcode Command Line Tools will be installed."
+fi
+
+if [[ -z "${NONINTERACTIVE-}" ]]; then
+  wait_for_user
+fi
+
+if [[ -d "${HOMEBREW_PREFIX}" ]]; then
+  if [[ "${#chmods[@]}" -gt 0 ]]; then
+    execute_sudo "/bin/chmod" "u+rwx" "${chmods[@]}"
+  fi
+  if [[ "${#group_chmods[@]}" -gt 0 ]]; then
+    execute_sudo "/bin/chmod" "g+rwx" "${group_chmods[@]}"
+  fi
+  if [[ "${#user_chmods[@]}" -gt 0 ]]; then
+    execute_sudo "/bin/chmod" "755" "${user_chmods[@]}"
+  fi
+  if [[ "${#chowns[@]}" -gt 0 ]]; then
+    execute_sudo "$CHOWN" "$USER" "${chowns[@]}"
+  fi
+  if [[ "${#chgrps[@]}" -gt 0 ]]; then
+    execute_sudo "$CHGRP" "$GROUP" "${chgrps[@]}"
+  fi
+else
+  execute_sudo "/bin/mkdir" "-p" "${HOMEBREW_PREFIX}"
+  if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
+    execute_sudo "$CHOWN" "root:wheel" "${HOMEBREW_PREFIX}"
+  else
+    execute_sudo "$CHOWN" "$USER:$GROUP" "${HOMEBREW_PREFIX}"
+  fi
+fi
+
+if [[ "${#mkdirs[@]}" -gt 0 ]]; then
+  execute_sudo "/bin/mkdir" "-p" "${mkdirs[@]}"
+  execute_sudo "/bin/chmod" "g+rwx" "${mkdirs[@]}"
+  execute_sudo "$CHOWN" "$USER" "${mkdirs[@]}"
+  execute_sudo "$CHGRP" "$GROUP" "${mkdirs[@]}"
+fi
+
+if ! [[ -d "${HOMEBREW_REPOSITORY}" ]]; then
+  execute_sudo "/bin/mkdir" "-p" "${HOMEBREW_REPOSITORY}"
+fi
+execute_sudo "$CHOWN" "$USER:$GROUP" "${HOMEBREW_REPOSITORY}"
+
+if ! [[ -d "${HOMEBREW_CACHE}" ]]; then
+  if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
+    execute_sudo "/bin/mkdir" "-p" "${HOMEBREW_CACHE}"
+  else
+    execute "/bin/mkdir" "-p" "${HOMEBREW_CACHE}"
+  fi
+fi
+if exists_but_not_writable "${HOMEBREW_CACHE}"; then
+  execute_sudo "/bin/chmod" "g+rwx" "${HOMEBREW_CACHE}"
+fi
+if file_not_owned "${HOMEBREW_CACHE}"; then
+  execute_sudo "$CHOWN" "$USER" "${HOMEBREW_CACHE}"
+fi
+if file_not_grpowned "${HOMEBREW_CACHE}"; then
+  execute_sudo "$CHGRP" "$GROUP" "${HOMEBREW_CACHE}"
+fi
+if [[ -d "${HOMEBREW_CACHE}" ]]; then
+  execute "$TOUCH" "${HOMEBREW_CACHE}/.cleaned"
+fi
+
+if should_install_command_line_tools && version_ge "$macos_version" "10.13"; then
+  ohai "Searching online for the Command Line Tools"
+  # This temporary file prompts the 'softwareupdate' utility to list the Command Line Tools
+  clt_placeholder="/tmp/.com.apple.dt.CommandLineTools.installondemand.in-progress"
+  execute_sudo "$TOUCH" "$clt_placeholder"
+
+  clt_label_command="/usr/sbin/softwareupdate -l |
+                      grep -B 1 -E 'Command Line Tools' |
+                      awk -F'*' '/^ *\\*/ {print \$2}' |
+                      sed -e 's/^ *Label: //' -e 's/^ *//' |
+                      sort -V |
+                      tail -n1"
+  clt_label="$(chomp "$(/bin/bash -c "$clt_label_command")")"
+
+  if [[ -n "$clt_label" ]]; then
+    ohai "Installing $clt_label"
+    execute_sudo "/usr/sbin/softwareupdate" "-i" "$clt_label"
+    execute_sudo "/bin/rm" "-f" "$clt_placeholder"
+    execute_sudo "/usr/bin/xcode-select" "--switch" "/Library/Developer/CommandLineTools"
+  fi
+fi
+
+# Headless install may have failed, so fallback to original 'xcode-select' method
+if should_install_command_line_tools && test -t 0; then
+  ohai "Installing the Command Line Tools (expect a GUI popup):"
+  execute_sudo "/usr/bin/xcode-select" "--install"
+  echo "Press any key when the installation has completed."
+  getc
+  execute_sudo "/usr/bin/xcode-select" "--switch" "/Library/Developer/CommandLineTools"
+fi
+
+if [[ -z "${HOMEBREW_ON_LINUX-}" ]] && ! output="$(/usr/bin/xcrun clang 2>&1)" && [[ "$output" == *"license"* ]]; then
+  abort "$(cat <<EOABORT
+You have not agreed to the Xcode license.
+Before running the installer again please agree to the license by opening
+Xcode.app or running:
+    sudo xcodebuild -license
+EOABORT
+)"
+fi
+
+ohai "Downloading and installing Homebrew..."
+(
+  cd "${HOMEBREW_REPOSITORY}" >/dev/null || return
+
+  # we do it in four steps to avoid merge errors when reinstalling
+  execute "git" "init" "-q"
+
+  # "git remote add" will fail if the remote is defined in the global config
+  execute "git" "config" "remote.origin.url" "${HOMEBREW_BREW_GIT_REMOTE}"
+  execute "git" "config" "remote.origin.fetch" "+refs/heads/*:refs/remotes/origin/*"
+
+  # ensure we don't munge line endings on checkout
+  execute "git" "config" "core.autocrlf" "false"
+
+  execute "git" "fetch" "--force" "origin"
+  execute "git" "fetch" "--force" "--tags" "origin"
+
+  execute "git" "reset" "--hard" "origin/master"
+
+  if [[ "${HOMEBREW_REPOSITORY}" != "${HOMEBREW_PREFIX}" ]]; then
+    execute "ln" "-sf" "${HOMEBREW_REPOSITORY}/bin/brew" "${HOMEBREW_PREFIX}/bin/brew"
+  fi
+
+  if [[ ! -d "${HOMEBREW_CORE}" ]]; then
+    ohai "Tapping homebrew/core"
+    (
+      execute "/bin/mkdir" "-p" "${HOMEBREW_CORE}"
+      cd "${HOMEBREW_CORE}" >/dev/null || return
+
+      execute "git" "init" "-q"
+      execute "git" "config" "remote.origin.url" "${HOMEBREW_CORE_GIT_REMOTE}"
+      execute "git" "config" "remote.origin.fetch" "+refs/heads/*:refs/remotes/origin/*"
+      execute "git" "config" "core.autocrlf" "false"
+      execute "git" "fetch" "--force" "origin" "refs/heads/master:refs/remotes/origin/master"
+      execute "git" "remote" "set-head" "origin" "--auto" >/dev/null
+      execute "git" "reset" "--hard" "origin/master"
+
+      cd "${HOMEBREW_REPOSITORY}" >/dev/null || return
+    ) || exit 1
+  fi
+
+  execute "${HOMEBREW_PREFIX}/bin/brew" "update" "--force" "--quiet"
+) || exit 1
+
+if [[ ":${PATH}:" != *":${HOMEBREW_PREFIX}/bin:"* ]]; then
+  warn "${HOMEBREW_PREFIX}/bin is not in your PATH."
+fi
+
+ohai "Installation successful!"
+echo
+
+# Use the shell's audible bell.
+if [[ -t 1 ]]; then
+  printf "\a"
+fi
+
+# Use an extra newline and bold to avoid this being missed.
+ohai "Homebrew has enabled anonymous aggregate formulae and cask analytics."
+echo "$(cat <<EOS
+${tty_bold}Read the analytics documentation (and how to opt-out) here:
+  ${tty_underline}https://docs.brew.sh/Analytics${tty_reset}
+No analytics data has been sent yet (or will be during this \`install\` run).
+EOS
+)
+"
+
+ohai "Homebrew is run entirely by unpaid volunteers. Please consider donating:"
+echo "$(cat <<EOS
+  ${tty_underline}https://github.com/Homebrew/brew#donations${tty_reset}
+EOS
+)
+"
+
+(
+  cd "${HOMEBREW_REPOSITORY}" >/dev/null || return
+  execute "git" "config" "--replace-all" "homebrew.analyticsmessage" "true"
+  execute "git" "config" "--replace-all" "homebrew.caskanalyticsmessage" "true"
+) || exit 1
+
+ohai "Next steps:"
+if [[ "$UNAME_MACHINE" == "arm64" ]] || [[ -n "${HOMEBREW_ON_LINUX-}" ]]; then
+  case "$SHELL" in
+    */bash*)
+      if [[ -r "$HOME/.bash_profile" ]]; then
+        shell_profile="$HOME/.bash_profile"
+      else
+        shell_profile="$HOME/.profile"
+      fi
+      ;;
+    */zsh*)
+      shell_profile="$HOME/.zprofile"
+      ;;
+    *)
+      shell_profile="$HOME/.profile"
+      ;;
+  esac
+
+  cat <<EOS
+- Add Homebrew to your ${tty_bold}PATH${tty_reset} in ${tty_underline}${shell_profile}${tty_reset}:
+    echo 'eval \$(${HOMEBREW_PREFIX}/bin/brew shellenv)' >> ${shell_profile}
+    eval \$(${HOMEBREW_PREFIX}/bin/brew shellenv)
+EOS
+fi
+
+echo "- Run \`brew help\` to get started"
+echo "- Further documentation: "
+echo "    ${tty_underline}https://docs.brew.sh${tty_reset}"
+
+if [[ -n "${HOMEBREW_ON_LINUX-}" ]]; then
+  echo "- Install the Homebrew dependencies if you have sudo access:"
+
+  if [[ $(command -v apt-get) ]]; then
+    echo "    sudo apt-get install build-essential"
+  elif [[ $(command -v yum) ]]; then
+    echo "    sudo yum groupinstall 'Development Tools'"
+  elif [[ $(command -v pacman) ]]; then
+    echo "    sudo pacman -S base-devel"
+  elif [[ $(command -v apk) ]]; then
+    echo "    sudo apk add build-base"
+  fi
+
+  cat <<EOS
+    See ${tty_underline}https://docs.brew.sh/linux${tty_reset} for more information
+- We recommend that you install GCC:
+    brew install gcc
+
+EOS
+fi
diff --git a/lib/uninstall.sh b/lib/uninstall.sh
new file mode 100755
index 0000000..42b1fae
--- /dev/null
+++ b/lib/uninstall.sh
@@ -0,0 +1,399 @@
+#!/bin/bash
+set -u
+shopt -s extglob
+
+abort() {
+  printf "%s\n" "$@"
+  exit 1
+}
+
+strip_s() {
+  local s
+  for s in "$@"; do
+    s=${s## }
+    echo "${s%% }"
+  done
+}
+
+dir_children() {
+  local p
+  for p in "$@"; do
+    [[ -d $p ]] || continue
+    find "$p" -mindepth 1 -maxdepth 1
+  done
+}
+
+# Set up temp dir
+tmpdir=/tmp/uninstall.$$
+mkdir -p "$tmpdir" || abort "Unable to create temp dir '$tmpdir'"
+trap '
+  rm -fr "$tmpdir"
+  # Invalidate sudo timestamp before exiting
+  /usr/bin/sudo -k
+' EXIT
+
+# Default options
+opt_force=""
+opt_quiet=""
+opt_dry_run=""
+opt_skip_cache_and_logs=""
+
+# global status to indicate whether there is anything wrong.
+failed=false
+
+un=$(uname)
+case "$un" in
+  Linux)
+    ostype=linux
+    homebrew_prefix_default=/home/linuxbrew/.linuxbrew
+  ;;
+  Darwin)
+    ostype=macos
+    if [[ "$(uname -m)" == "arm64" ]]; then
+      homebrew_prefix_default=/opt/homebrew
+    else
+      homebrew_prefix_default=/usr/local
+    fi
+    realpath() {
+      cd "$(dirname "$1")" && echo "$(pwd -P)/$(basename "$1")"
+    }
+  ;;
+  *)
+    abort "Unsupported system type '$un'"
+  ;;
+esac
+
+# string formatters
+if [[ -t 1 ]]; then
+  tty_escape() { printf "\033[%sm" "$1"; }
+else
+  tty_escape() { :; }
+fi
+tty_mkbold() { tty_escape "1;${1:-39}"; }
+tty_blue=$(tty_mkbold 34)
+tty_red=$(tty_mkbold 31)
+tty_bold=$(tty_mkbold 39)
+tty_reset=$(tty_escape 0)
+
+have_sudo_access() {
+  local -a args
+  if [[ -n "${SUDO_ASKPASS-}" ]]; then
+    args=("-A")
+  fi
+
+  if [[ -z "${HAVE_SUDO_ACCESS-}" ]]; then
+    if [[ -n "${args[*]-}" ]]; then
+      /usr/bin/sudo "${args[@]}" -l mkdir &>/dev/null
+    else
+      /usr/bin/sudo -l mkdir &>/dev/null
+    fi
+    HAVE_SUDO_ACCESS="$?"
+  fi
+
+  if [[ -z "${HOMEBREW_ON_LINUX-}" ]] && [[ "$HAVE_SUDO_ACCESS" -ne 0 ]]; then
+    abort "Need sudo access on macOS (e.g. the user $USER to be an Administrator)!"
+  fi
+
+  return "$HAVE_SUDO_ACCESS"
+}
+
+shell_join() {
+  local arg
+  printf "%s" "$1"
+  shift
+  for arg in "$@"; do
+    printf " "
+    printf "%s" "${arg// /\ }"
+  done
+}
+
+resolved_pathname() { realpath "$1"; }
+
+pretty_print_pathnames() {
+  local p
+  for p in "$@"; do
+    if [[ -h $p ]]; then
+      printf '%s -> %s\n' "$p" "$(resolved_pathname "$p")"
+    elif [[ -d $p ]]; then
+      echo "$p/"
+    else
+      echo "$p"
+    fi
+  done
+}
+
+chomp() {
+  printf "%s" "${1/"$'\n'"/}"
+}
+
+ohai() {
+  printf "${tty_blue}==>${tty_bold} %s${tty_reset}\n" "$(shell_join "$@")"
+}
+
+warn() {
+  printf "${tty_red}Warning${tty_reset}: %s\n" "$(chomp "$1")"
+}
+
+execute() {
+  if ! "$@"; then
+    abort "$(printf "Failed during: %s" "$(shell_join "$@")")"
+  fi
+}
+
+execute_sudo() {
+  local -a args=("$@")
+  if [[ -n "${SUDO_ASKPASS-}" ]]; then
+    args=("-A" "${args[@]}")
+  fi
+  if have_sudo_access; then
+    ohai "/usr/bin/sudo" "${args[@]}"
+    system "/usr/bin/sudo" "${args[@]}"
+  else
+    ohai "${args[@]}"
+    system "${args[@]}"
+  fi
+}
+
+system() {
+  if ! "$@"; then
+    warn "Failed during: $(shell_join "$@")"
+    failed=true
+  fi
+}
+
+####################################################################### script
+
+homebrew_prefix_candidates=()
+
+usage() {
+  cat <<EOS
+Homebrew Uninstaller
+Usage: $0 [options]
+    -p, --path=PATH  Sets Homebrew prefix. Defaults to /usr/local.
+        --skip-cache-and-logs
+                     Skips removal of HOMEBREW_CACHE and HOMEBREW_LOGS.
+    -f, --force      Uninstall without prompting.
+    -q, --quiet      Suppress all output.
+    -n, --dry-run    Simulate uninstall but don't remove anything.
+    -h, --help       Display this message.
+EOS
+  exit "${1:-0}"
+}
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    -p*) homebrew_prefix_candidates+=("${1#-p}");;
+    --path=*) homebrew_prefix_candidates+=("${1#--path=}");;
+    --skip-cache-and-logs) opt_skip_cache_and_logs=1;;
+    -f|--force) opt_force=1;;
+    -q|--quiet) opt_quiet=1;;
+    -d|-n|--dry-run) opt_dry_run=1;;
+    -h|--help) usage;;
+    *) warn "Unrecognized option: '$1'"; usage 1;;
+  esac
+  shift
+done
+
+if [[ ${#homebrew_prefix_candidates[@]} -eq 0 ]]; then # Attempt to locate Homebrew unless `--path` is passed
+  prefix=$(brew --prefix)
+  [[ -n $prefix ]] && homebrew_prefix_candidates+=("$prefix")
+  prefix=$(command -v brew) || prefix=""
+  [[ -n $prefix ]] && homebrew_prefix_candidates+=("$(dirname "$(dirname "$(strip_s "$prefix")")")")
+  homebrew_prefix_candidates+=("$homebrew_prefix_default") # Homebrew default path
+  homebrew_prefix_candidates+=("$HOME/.linuxbrew") # Linuxbrew default path
+fi
+
+HOMEBREW_PREFIX=$(for p in "${homebrew_prefix_candidates[@]}"; do
+  [[ -d $p ]] || continue
+  [[ $p == "$homebrew_prefix_default" && -d $p/Homebrew/.git ]] && echo "$p" && break
+  [[ -d $p/.git || -x $p/bin/brew ]] && echo "$p" && break
+done)
+[[ -n $HOMEBREW_PREFIX ]] || abort "Failed to locate Homebrew!"
+
+if [[ -d $HOMEBREW_PREFIX/.git ]]; then
+  HOMEBREW_REPOSITORY=$(dirname "$(realpath "$HOMEBREW_PREFIX/.git")")
+elif [[ -x $HOMEBREW_PREFIX/bin/brew ]]; then
+  HOMEBREW_REPOSITORY=$(dirname "$(dirname "$(realpath "$HOMEBREW_PREFIX/bin/brew")")")
+else
+  abort "Failed to locate Homebrew!"
+fi
+
+if [[ -d $HOMEBREW_PREFIX/Cellar ]]; then
+  HOMEBREW_CELLAR=$HOMEBREW_PREFIX/Cellar
+else
+  HOMEBREW_CELLAR=$HOMEBREW_REPOSITORY/Cellar
+fi
+
+if [[ -s $HOMEBREW_REPOSITORY/.gitignore ]]; then
+  gitignore=$(<"$HOMEBREW_REPOSITORY/.gitignore")
+else
+  gitignore=$(curl -fsSL https://raw.githubusercontent.com/Homebrew/brew/master/.gitignore)
+fi
+[[ -n $gitignore ]] || abort "Failed to fetch Homebrew .gitignore!"
+
+{
+  while read -r l; do
+    [[ $l == \!* ]] || continue
+    l=${l#\!}
+    l=${l#/}
+    [[ $l == @(bin|share|share/doc) ]] && echo "REJECT: $l" >&2 && continue
+    echo "$HOMEBREW_REPOSITORY/$l"
+  done <<<"$gitignore"
+
+  if [[ $HOMEBREW_PREFIX != "$HOMEBREW_REPOSITORY" ]]; then
+    echo "$HOMEBREW_REPOSITORY"
+    for p in \
+      bin/brew \
+      etc/bash_completion.d/brew \
+      share/doc/homebrew \
+      share/man/man1/brew.1 \
+      share/man/man1/brew-cask.1 \
+      share/zsh/site-functions/_brew \
+      share/zsh/site-functions/_brew_cask \
+      var/homebrew \
+    ; do
+      echo "$HOMEBREW_PREFIX/$p"
+    done
+  else
+    echo "$HOMEBREW_REPOSITORY/.git"
+  fi
+  echo "$HOMEBREW_CELLAR"
+  echo "$HOMEBREW_PREFIX/Caskroom"
+
+  [[ -n $opt_skip_cache_and_logs ]] || cat <<-EOS
+	$HOME/Library/Caches/Homebrew
+	$HOME/Library/Logs/Homebrew
+	/Library/Caches/Homebrew
+	$HOME/.cache/Homebrew
+	${HOMEBREW_CACHE:-}
+	${HOMEBREW_LOGS:-}
+	EOS
+
+  if [[ $ostype == macos ]]; then
+    dir_children "/Applications" "$HOME/Applications" | while read -r p2; do
+      [[ $(resolved_pathname "$p2") == $HOMEBREW_CELLAR/* ]] && echo "$p2"
+    done
+  fi
+} | while read -r l; do
+  [[ -e $l ]] && echo "$l"
+done | sort -u > "$tmpdir/homebrew_files"
+homebrew_files=()
+while read -r l; do
+  homebrew_files+=("$l")
+done < "$tmpdir/homebrew_files"
+
+if [[ -z $opt_quiet ]]; then
+  dry_str=${opt_dry_run:+would}
+  warn "This script ${dry_str:-will} remove:"
+  pretty_print_pathnames "${homebrew_files[@]}"
+fi
+
+if [[ -t 0 && -z $opt_force && -z $opt_dry_run ]]; then
+  read -rp "Are you sure you want to uninstall Homebrew? This will remove your installed packages! [y/N] "
+  [[ $REPLY == [yY]* ]] || abort
+fi
+
+[[ -n $opt_quiet ]] || ohai "Removing Homebrew installation..."
+paths=()
+for p in Frameworks bin etc include lib opt sbin share var; do
+  p=$HOMEBREW_PREFIX/$p
+  [[ -e $p ]] && paths+=("$p")
+done
+if [[ ${#paths[@]} -gt 0 ]]; then
+  if [[ $ostype == macos ]]; then
+    args=(-E "${paths[@]}" -regex '.*/info/([^.][^/]*\.info|dir)')
+  else
+    args=("${paths[@]}" -regextype posix-extended -regex '.*/info/([^.][^/]*\.info|dir)')
+  fi
+  if [[ -n $opt_dry_run ]]; then
+    args+=(-print)
+    echo "Would delete:"
+  else
+    args+=(-exec /bin/bash -c)
+    args+=("/usr/bin/install-info --delete --quiet {} \"\$(dirname {})/dir\"")
+    args+=(';')
+  fi
+  system /usr/bin/find "${args[@]}"
+  args=("${paths[@]}" -type l -lname '*/Cellar/*')
+  if [[ -n $opt_dry_run ]]; then
+    args+=(-print)
+  else
+    args+=(-exec unlink '{}' ';')
+  fi
+  [[ -n $opt_dry_run ]] && echo "Would delete:"
+  system /usr/bin/find "${args[@]}"
+fi
+
+for file in "${homebrew_files[@]}"; do
+  if [[ -n $opt_dry_run ]]; then
+    echo "Would delete ${file}"
+  else
+    if ! err=$(rm -fr "$file" 2>&1); then
+      warn "Failed to delete ${file}"
+      echo "$err"
+    fi
+  fi
+done
+
+sudo() {
+  ohai "/usr/bin/sudo" "$@"
+  system /usr/bin/sudo "$@"
+}
+
+[[ -n $opt_quiet ]] || ohai "Removing empty directories..."
+paths=()
+for p in bin etc include lib opt sbin share var \
+         Caskroom Cellar Homebrew Frameworks; do
+  p=$HOMEBREW_PREFIX/$p
+  [[ -e $p ]] && paths+=("$p")
+done
+if [[ ${#paths[@]} -gt 0 ]]; then
+  if [[ $ostype == macos ]]; then
+    args=("${paths[@]}" -name .DS_Store)
+    if [[ -n $opt_dry_run ]]; then
+      args+=(-print)
+      echo "Would delete:"
+    else
+      args+=(-delete)
+    fi
+    execute_sudo /usr/bin/find "${args[@]}"
+  fi
+  args=("${paths[@]}" -depth -type d -empty)
+  if [[ -n $opt_dry_run ]]; then
+    args+=(-print)
+    echo "Would remove directories:"
+  else
+    args+=(-exec rmdir '{}' ';')
+  fi
+  execute_sudo /usr/bin/find "${args[@]}"
+fi
+
+[[ -n $opt_dry_run ]] && exit
+if [[ $HOMEBREW_PREFIX != "$homebrew_prefix_default" && -e $HOMEBREW_PREFIX ]]; then
+   execute_sudo rmdir "$HOMEBREW_PREFIX"
+fi
+if [[ $HOMEBREW_PREFIX != "$HOMEBREW_REPOSITORY" && -e $HOMEBREW_REPOSITORY ]]; then
+   execute_sudo rmdir "$HOMEBREW_REPOSITORY"
+fi
+
+if [[ -z $opt_quiet ]]; then
+  if [[ $failed == true ]]; then
+    warn "Homebrew partially uninstalled (but there were steps that failed)!"
+    echo "To finish uninstalling rerun this script with \`sudo\`."
+  else
+    ohai "Homebrew uninstalled!"
+  fi
+fi
+
+dir_children "$HOMEBREW_REPOSITORY" "$HOMEBREW_PREFIX" \
+  | sort -u > "$tmpdir/residual_files"
+
+if [[ -s $tmpdir/residual_files && -z $opt_quiet ]]; then
+  echo "The following possible Homebrew files were not deleted:"
+  while read -r f; do
+    pretty_print_pathnames "$f"
+  done <"$tmpdir/residual_files"
+  echo -e "You may wish to remove them yourself.\n"
+fi
+
+[[ $failed != true ]]
diff --git a/uninstall.sh b/uninstall.sh
index 74d80cd..42b1fae 100755
--- a/uninstall.sh
+++ b/uninstall.sh
@@ -49,7 +49,11 @@ case "$un" in
   ;;
   Darwin)
     ostype=macos
-    homebrew_prefix_default=/usr/local
+    if [[ "$(uname -m)" == "arm64" ]]; then
+      homebrew_prefix_default=/opt/homebrew
+    else
+      homebrew_prefix_default=/usr/local
+    fi
     realpath() {
       cd "$(dirname "$1")" && echo "$(pwd -P)/$(basename "$1")"
     }