Properly setting $PATH for zsh on macOS (fighting with path_helper)

zshenv

# zshenv path_helper issue script.
# Source: https://gist.github.com/romanr/2c5ee2eafc284a2530cdb6b8d64d929c
# Based on https://gist.github.com/Linerre/f11ad4a6a934dcf01ee8415c9457e7b2
#
# if [ -f "/etc/zprofile" ] && grep -q "path_helper" "/etc/zprofile"; then
#     echo "WARNING: 'path_helper' in '/etc/zprofile', please remove it." >&2
#     echo "Path helper 'path_helper' will execute after the one in this '~/.zshenv' file and" >&2
#     echo "potentially reorder paths." >&2
# fi
unsetopt GLOBAL_RCS

# Uncomment to set checksum of /etc/zprofile
# CHECKSUMZ=""

# if [[ ! -v CHECKSUMZ ]]; then 
#    echo "Checksum is not set," # "  run \"crc32 /etc/zprofile\" and add checksum to \`~/.zshenv\" " 
# fi

# Apple has set in `/etc/zprofile` the execution of `path_helper` tool, which
# disorder the `PATH` variable like set here, prepending always system
# directories and causing some problems. Fix the following option avoid load ZSH
# startup files which follows the current one in the ZSH startup flow. In particular,
# `/etc/zprofile`, so disable run of `path_helper`. More info here
# https://gist.github.com/Linerre/f11ad4a6a934dcf01ee8415c9457e7b2, where I
# even propose this solution
unsetopt GLOBAL_RCS

# To preserve other possible settings that should be executed by launching these
# global files, all but `/etc/zprofile` are invoked manually
source '/etc/zshrc' # Would be after `~/.zshenv` in flow, so OK

# Finally, the `/etc/zprofile` is checked for changes. This is done in case any
# additional settings are updated in the future in that file that might not
# want to simply ignore.
#
# Current contents:
#
# ```
# ❯ cat /etc/zprofile
# System-wide profile for interactive zsh(1) login shells.
#
# Setup user specific overrides for this in ~/.zprofile. See zshbuiltins(1)
# and zshoptions(1) for more details.
#
# if [ -x /usr/libexec/path_helper ]; then
# 	eval `/usr/libexec/path_helper -s`
# fi
# ```
if [[ -v CHECKSUMZ ]]; then 


if [ "$(crc32 '/etc/zprofile')" != \
	"$CHECKSUMZ" ]; then
	echo "$(tput setaf 3)[WARNING]$(tput sgr 0) File \`/etc/zprofile\` seems to has been changed since checkpoint. \n" \
		'         1. Remove or comment path_helper lines (everything) in /etc/zprofile \n' \
		"         2. Run 'crc32 /etc/zprofile' and add checksum to beginning of ~/.zshenv"
fi

# It is also verified that the rest of the global files still do not exist, so
# that invocation can still been avoided
for file in '/etc/zshenv' '/etc/zlogin' '/etc/zlogout'; do
	if [ -f "$file" ]; then
		echo "$(tput setaf 3)[WARNING]$(tput sgr 0) File `$file` exists and" \
			"should not. See https://gist.github.com/Linerre/f11ad4a6a934dcf01ee8415c9457e7b2#choosing-the-right-init-file"
	fi
done

else
   echo "Checksum is not set! Run \"crc32 /etc/zprofile\" and add checksum to \`~/.zshenv\" " 
fi