Homebrew managed go get

brew-go-get.sh

#!/bin/bash
# brew-go-get
# Original: https://blog.filippo.io/cleaning-up-my-gopath-with-homebrew/

set -euo pipefail

name_to_repo() {
	local name="$1"
	name="${name/go-get-}"
	echo "${name//--//}"
}

repo_to_name() {
	local repo="$1"
	echo "go-get-${repo//\//--}"
}

install() {
	local pkg="$1"; shift
	local args=("$@")
	local name version

	name="$pkg"
	version=$(date '+%Y-%m-%d')

	if [[ $name = go-get-* ]]; then
		pkg="$(name_to_repo $name)"
	else
		name="$(repo_to_name $name)"
	fi

	export GOPATH="$(brew --prefix)/Cellar/$name/$version"
	
	go get ${args[@]} "$pkg"
	
	rm -rf "$GOPATH"/{pkg,src}

	brew switch "$name" "$version" 2>/dev/null || {
		brew unlink "$name" 2> /dev/null || true
		brew link "$name"
	}
}

if [[ $# -lt 1 ]] || [[ $* =~ -h|--help ]] ; then
	echo "Usage: brew-go-get [upgrade] <github.com/foo/bar|go-get-github.com--foo--bar> <...>"
	exit 1
fi

ARGS=("")
if [[ $1 = upgrade ]]; then
	ARGS+=(-u)
	shift
fi

for pkg in "$@"; do
	install "$pkg" "${ARGS[@]}"
done