Fetch and install the latest nightly build of Ruby on macOX

ruby-install-nightly

#!/usr/bin/env zsh -e

zparseopts -D -- h=help -help=help \
                 j:=jobs -jobs:=jobs \
                 -no-install-deps=no_install_deps \
                 d:=rubies_dir -rubies-dir:=rubies_dir \
                 n:=ruby_name -ruby-name:=ruby_name \
                 s:=src_dir -src-dir:=src_dir \
                 u:=url -url:=url \
                 v=version -version=version

function nightly-log() {
  if [[ -t 1 ]]; then
    print -r -P "%B%F{green}>>>%F{reset_color}%b $1 ..."
  else
    print -r ">>> $1 ..."
  fi
}

function nightly-brew-deps() {
  brew install "$@" 2>/dev/null
  brew upgrade "$@" || true
}

function nightly-remove-old() {
  rm -f "$ruby_src"
  rm -rf "$ruby_src_dir"
  rm -rf "$rubies_dir/$ruby_name"
}

function nightly-fetch-source() {
  mkdir -p "$src_dir"
  curl -f "$ruby_url" > "$ruby_src"
  tar -xjvf "$ruby_src" -C "$src_dir"
}

function nightly-configure() {
  mkdir -p "$rubies_dir"
  (cd "$ruby_src_dir" && "$ruby_src_dir/configure" "$@")
}

function nightly-build() {
  make "$@" -C "$ruby_src_dir"
  make install -C "$ruby_src_dir"
}

function nightly-usage() {
  cat <<USAGE
usage: ${0:t} [OPTIONS]

Options:

  -h, --help
  -j, --jobs JOBS
  --no-install-deps
  -d, --rubies-dir DIR
  -n, --ruby-name NAME
  -s, --src-dir DIR
  -u, --url URL
  -v, --version

USAGE
}

if (( $# )); then
  print -r -u2 "fatal: unrecognized option: $1"
  exit 1
fi

if (( $+help[1] )); then
  nightly-usage
  exit
fi

if (( $+version[1] )); then
  print -r "${0:t} 0.0.1"
  exit
fi

if (( UID )); then
  rubies_dir="${rubies_dir[2]:-$HOME/.rubies}"
  src_dir="${src_dir[2]:-$HOME/src}"
else
  rubies_dir="${rubies_dir[2]:-/opt/rubies}"
  src_dir="${src_dir[2]:-/usr/local/src}"
fi

jobs="${jobs[2]:-8}"
ruby_name="${ruby_name[2]:-ruby-nightly}"
ruby_url="${url[2]:-https://cache.ruby-lang.org/pub/ruby/snapshot.tar.bz2}"
ruby_src="$src_dir/${ruby_url:t}"
ruby_src_dir="${ruby_src:r:r}"

opt_dirs=()
if (( $+commands[brew] )); then
  for dep (gdbm libffi libyaml openssl readline) opt_dirs+=($(brew --prefix "$dep"))

  if (( ! $+no_install_deps[1] )); then
    nightly-log "Installing & updating Homebrew packages"
    nightly-brew-deps automake bison gdbm jemalloc libffi libyaml openssl readline
  fi
fi

nightly-log "Cleaning up previous $ruby_name install"
nightly-remove-old

nightly-log "Fetching $ruby_name source"
nightly-fetch-source

nightly-log "Configuring $ruby_name"
nightly-configure --prefix="$rubies_dir/$ruby_name" --with-opt-dir="${(j[:])opt_dirs}" --with-jemalloc

nightly-log "Building $ruby_name"
nightly-build -j "$jobs"

nightly-log "Successfully installed $ruby_name"