sbtenv 0.0.8

New formula, cribbed wholesale from the scalaenv formula

Closes Homebrew/homebrew#39989.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Formula/sbtenv.rb

@@ -0,0 +1,40 @@
+class Sbtenv < Formula
+  homepage "https://github.com/mazgi/sbtenv"
+  url "https://github.com/mazgi/sbtenv/archive/version/0.0.8.tar.gz"
+  sha256 "0c93c0b2265fd36f60643a963d6ec1801397d87b69d425b9e7a27fc50a561943"
+
+  head "https://github.com/mazgi/sbtenv.git"
+
+  def install
+    inreplace "libexec/sbtenv", "/usr/local", HOMEBREW_PREFIX
+    prefix.install "bin", "completions", "libexec"
+    prefix.install "plugins" => "default-plugins"
+
+    var_lib = "#{HOMEBREW_PREFIX}/var/lib/sbtenv"
+    %w[plugins versions].each do |dir|
+      var_dir = "#{var_lib}/#{dir}"
+      mkdir_p var_dir
+      ln_sf var_dir, "#{prefix}/#{dir}"
+    end
+
+    rm_f "#{var_lib}/plugins/sbt-install"
+    ln_sf "#{prefix}/default-plugins/sbt-install", "#{var_lib}/plugins/sbt-install"
+
+    %w[sbtenv-install].each do |cmd|
+      bin.install_symlink "#{prefix}/default-plugins/sbt-install/bin/#{cmd}"
+    end
+  end
+
+  def caveats; <<-EOS.undent
+    To use Homebrew's directories rather than ~/.sbtenv add to your profile:
+      export SBTENV_ROOT=#{var}/sbtenv
+
+    To enable shims and autocompletion add to your profile:
+      eval "$(sbtenv init -)"
+    EOS
+  end
+
+  test do
+    shell_output("eval \"$(#{bin}/sbtenv init -)\" && sbtenv versions")
+  end
+end