plugins/homebrew/homebrew.zshrc

   1 # AX-ZSH: Alex' Modular ZSH Configuration
   2 # homebrew.zshrc -- Setup Homebrew Package Manager
   3
   4 # Make sure that "brew(1)" is installed
   5 (( $+commands[brew] )) || return 1
   6
   7 if [[ -n "$AXZSH_PLUGIN_CHECK" ]]; then
   8         # Make sure brew command is working
   9         brew --version >/dev/null 2>&1 || return 1
  10 fi
  11
  12 function brew() {
  13         # This wrapper function for the brew(1) command does the following:
  14         # - Detect the location of the "real" brew(1) command.
  15         # - Change user and group when the Homebrew installation is owned by a
  16         #   different user (to preserve sane file permissions).
  17         # - Set a relaxed umask(1) so that other users can use software
  18         #   installed by Homebrew.
  19         # - Call the "real" brew(1) command.
  20
  21         if [[ -x /home/linuxbrew/.linuxbrew/bin/brew ]]; then
  22                 real_brew_cmd="/home/linuxbrew/.linuxbrew/bin/brew"
  23         elif [[ -x /opt/homebrew/bin/brew ]]; then
  24                 real_brew_cmd="/opt/homebrew/bin/brew"
  25         elif [[ -x /usr/local/bin/brew ]]; then
  26                 real_brew_cmd="/usr/local/bin/brew"
  27         else
  28                 if [[ "$1" != "shellenv" && "$1" != "--prefix" ]]; then
  29                         echo "Oops, real \"brew\" command not found!? [for \"$1\"]" >&2
  30                 fi
  31                 return 101
  32         fi
  33
  34         if [[ -z "$HOMEBREW_REPOSITORY" ]]; then
  35                 echo "Oops, \"HOMEBREW_REPOSITORY\" not set? Trying to fix ..." >&2
  36                 eval "$("$real_brew_cmd" shellenv)"
  37         fi
  38
  39         if [[ $(/bin/ls -ldn "$HOMEBREW_REPOSITORY" | awk '{print $3}') -eq $UID ]]; then
  40                 # We are the owner of the Homebrew installation.
  41                 (
  42                         [[ $# -eq 0 && -t 1 ]] && echo "Running \"$real_brew_cmd\" ..."
  43                         umask 0022 || return 102
  44                         "$real_brew_cmd" "$@"
  45                 )
  46         else
  47                 # We are a different user than the owner of the Homebrew
  48                 # installation. So we need to change the user when running the
  49                 # real "brew" command!
  50                 priv_exec="eval \$("$real_brew_cmd" shellenv) || exit 103; umask 0022 || exit 104; \"$real_brew_cmd\" $*"
  51                 (
  52                         cd /tmp
  53                         user="$(/bin/ls -ld "$HOMEBREW_REPOSITORY" | awk '{print $3}')"
  54                         group="$(/bin/ls -ld "$HOMEBREW_REPOSITORY" | awk '{print $4}')"
  55                         [[ $# -eq 0 && -t 1 ]] \
  56                                 && echo "Running \"$real_brew_cmd\" as user \"$user:$group\" ..."
  57                         sudo -u "$user" -g "$group" -- sh -c "$priv_exec"
  58                 )
  59         fi
  60         return $?
  61 }