Erlang/OTP installer for macOS using the community-maintained pre-compiled Erlang/OTP

erl_install.sh

#!/bin/bash

dir="$HOME/.erl"
mkdir -p dir

if [ $# -lt 1 ]; then
  echo "Usage: $0 [latest|version]"
  exit 0
fi

if [ $(uname -s) != "Darwin" ]; then
  echo "This machine is not Mac."
  exit 1
fi

case $(uname -m) in
  "arm64")
    target="aarch64-apple-darwin";;

  "x86_64")
    target="x86_64-apple-darwin";;

  *)
    echo "This machine is not aarch64 nor x86_64."
    exit 1;;
esac

if [ $1 = "latest" ]; then
  version="$(curl -fsSL https://github.com/erlef/otp_builds/raw/main/builds/aarch64-apple-darwin.csv | grep -e "^OTP" | cut -d"," -f1 | cut -d"-" -f2 |sort -n | tail -1)"
else
  version="$1"
fi

line=$(curl -fsSL https://github.com/erlef/otp_builds/raw/main/builds/$target.csv | grep OTP-$version,)

if [ -z $line ]; then
  echo "Does not specified version"
  exit 1
fi

checksum=$(echo $line | cut -d"," -f4)

mkdir -p $dir/$version

cd /tmp
curl -fLO https://github.com/erlef/otp_builds/releases/download/OTP-$version/otp-$target.tar.gz
sha256 otp-$target.tar.gz --check $checksum

if [ $? -ne 0 ]; then
  echo "Does not match checksum."
  exit 1
fi

cd $dir/$version
tar xfz /tmp/otp-$target.tar.gz