diff --git a/Formula/guile@2.0.rb b/Formula/guile@2.0.rb
new file mode 100644
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+++ b/Formula/guile@2.0.rb
@@ -0,0 +1,80 @@
+class GuileAT20 < Formula
+  desc "GNU Ubiquitous Intelligent Language for Extensions"
+  homepage "https://www.gnu.org/software/guile/"
+
+  stable do
+    url "https://ftp.gnu.org/gnu/guile/guile-2.0.14.tar.xz"
+    mirror "https://ftpmirror.gnu.org/guile/guile-2.0.14.tar.xz"
+    sha256 "e8442566256e1be14e51fc18839cd799b966bc5b16c6a1d7a7c35155a8619d82"
+
+    if MacOS.version >= :sierra
+      # https://debbugs.gnu.org/cgi/bugreport.cgi?bug=23870
+      # https://git.net/ml/bug-guile-gnu/2016-06/msg00180.html
+      # https://github.com/Homebrew/homebrew-core/issues/1957#issuecomment-229347476
+      # https://gist.githubusercontent.com/rahulg/baa500e84136f0965e9ade2fb36b90ba/raw/4f1081838972ac9621fc68bb571daaf99fc0c045/libguile-stime-sierra.patch
+      patch :p0 do
+        url "https://raw.githubusercontent.com/macports/macports-ports/5a3bba7/lang/guile/files/sierra.patch"
+        sha256 "6947f15e1aa6129f12eb692253bcc1ff969862f804de1f4d6360ad4786ae53f0"
+      end
+
+      # Filter incompat. mkostemp(3) flags on macOS 10.12
+      # https://trac.macports.org/ticket/52613
+      # https://debbugs.gnu.org/cgi/bugreport.cgi?bug=24862
+      patch :p0 do
+        url "https://raw.githubusercontent.com/macports/macports-ports/8b7f401/lang/guile/files/sierra-filter-incompatible-mkostemp-flags.patch"
+        sha256 "90750429d92a2ea97c828435645a2fd3b399e1b571ced41ff1988894155b4934"
+      end
+    end
+  end
+
+  head do
+    url "https://git.savannah.gnu.org/git/guile.git", :branch => "stable-2.0"
+
+    depends_on "autoconf" => :build
+    depends_on "automake" => :build
+    depends_on "gettext" => :build
+  end
+
+  keg_only :versioned_formula
+
+  depends_on "pkg-config" => :run # guile-config is a wrapper around pkg-config.
+  depends_on "libtool" => :run
+  depends_on "libffi"
+  depends_on "libunistring"
+  depends_on "bdw-gc"
+  depends_on "gmp"
+  depends_on "readline"
+
+  fails_with :clang do
+    build 211
+    cause "Segfaults during compilation"
+  end
+
+  def install
+    system "./autogen.sh" unless build.stable?
+    system "./configure", "--disable-dependency-tracking",
+                          "--prefix=#{prefix}",
+                          "--with-libreadline-prefix=#{Formula["readline"].opt_prefix}",
+                          "--with-libgmp-prefix=#{Formula["gmp"].opt_prefix}"
+    system "make", "install"
+
+    # A really messed up workaround required on macOS --mkhl
+    Pathname.glob("#{lib}/*.dylib") do |dylib|
+      lib.install_symlink dylib.basename => "#{dylib.basename(".dylib")}.so"
+    end
+
+    (share/"gdb/auto-load").install Dir["#{lib}/*-gdb.scm"]
+  end
+
+  test do
+    hello = testpath/"hello.scm"
+    hello.write <<-EOS.undent
+    (display "Hello World")
+    (newline)
+    EOS
+
+    ENV["GUILE_AUTO_COMPILE"] = "0"
+
+    system bin/"guile", hello
+  end
+end