nyacc: new version 1.09.3

Closes #299.

Signed-off-by: Aleix Conchillo Flaqué <[email protected]>

Formula/nyacc.rb

@@ -0,0 +1,46 @@
+class Nyacc < Formula
+  desc "Guile modules for generating parsers and lexical analyzers"
+  homepage "https://www.nongnu.org/nyacc/"
+  url "https://download.savannah.gnu.org/releases/nyacc/nyacc-1.09.3.tar.gz"
+  sha256 "068f31458e71ac7fc462f98ea134160002635c03df6ef1995b0b3eacc09e2a2b"
+
+  bottle do
+    root_url "https://github.com/aconchillo/homebrew-guile/releases/download/nyacc-1.08.1"
+    sha256 cellar: :any_skip_relocation, x86_64_linux: "f280d5abe0dc43049456df3e7a798b17db3eff93216dc1e7a500496aae5d9810"
+  end
+
+  depends_on "pkg-config" => :build
+  depends_on "texinfo" => :build
+  depends_on "guile"
+  depends_on "guile-bytestructures"
+
+  def install
+    ENV["GUILE_AUTO_COMPILE"] = "0"
+
+    system "./configure", "--prefix=#{prefix}"
+    system "make", "install"
+  end
+
+  def caveats
+    <<~EOS
+      Remember to add the following to your .bashrc or equivalent in order to use this module:
+        export GUILE_LOAD_PATH="#{HOMEBREW_PREFIX}/share/guile/site/3.0"
+        export GUILE_LOAD_COMPILED_PATH="#{HOMEBREW_PREFIX}/lib/guile/3.0/site-ccache"
+        export GUILE_SYSTEM_EXTENSIONS_PATH="#{HOMEBREW_PREFIX}/lib/guile/3.0/extensions"
+    EOS
+  end
+
+  test do
+    nyacc = testpath/"nyacc.scm"
+    nyacc.write <<~EOS
+      (use-modules (nyacc parse))
+    EOS
+
+    ENV["GUILE_AUTO_COMPILE"] = "0"
+    ENV["GUILE_LOAD_PATH"] = HOMEBREW_PREFIX/"share/guile/site/3.0"
+    ENV["GUILE_LOAD_COMPILED_PATH"] = HOMEBREW_PREFIX/"lib/guile/3.0/site-ccache"
+    ENV["GUILE_SYSTEM_EXTENSIONS_PATH"] = HOMEBREW_PREFIX/"lib/guile/3.0/extensions"
+
+    system "guile", nyacc
+  end
+end