wxmaxima: migrate from homebrew/science

Closes #16745.

Signed-off-by: FX Coudert <fxcoudert@gmail.com>

Formula/wxmaxima.rb

@@ -0,0 +1,42 @@
+class Wxmaxima < Formula
+  desc "Cross platform GUI for Maxima"
+  homepage "https://andrejv.github.io/wxmaxima"
+  url "https://github.com/andrejv/wxmaxima/archive/Version-17.05.1.tar.gz"
+  sha256 "72394f266a784e433e232e600e7178fdd6362fd33f8ac11703db10c780676037"
+  revision 1
+  head "https://github.com/andrejv/wxmaxima.git"
+
+  depends_on "autoconf" => :build
+  depends_on "automake" => :build
+  depends_on "gettext" => :build
+  depends_on "wxmac"
+
+  def install
+    system "./bootstrap"
+    system "./configure", "--disable-dependency-tracking",
+                          "--prefix=#{prefix}"
+    system "make"
+    cd "locales" do
+      system "make", "allmo"
+    end
+    system "make", "wxMaxima.app"
+    system "make", "install"
+    prefix.install "wxMaxima.app"
+  end
+
+  def caveats; <<-EOS.undent
+    When you start wxMaxima the first time, set the path to Maxima
+    (e.g. #{HOMEBREW_PREFIX}/bin/maxima) in the Preferences.
+
+    Enable gnuplot functionality by setting the following variables
+    in ~/.maxima/maxima-init.mac:
+      gnuplot_command:"#{HOMEBREW_PREFIX}/bin/gnuplot"$
+      draw_command:"#{HOMEBREW_PREFIX}/bin/gnuplot"$
+    EOS
+  end
+
+  test do
+    assert_equal "wxMaxima #{version}",
+                 shell_output("#{bin}/wxMaxima -v", 255).chomp
+  end
+end