cdo: use new dsl

1 files changed, 4 insertions, 11 deletions

diff --git a/Library/Formula/cdo.rb b/Library/Formula/cdo.rb
index 1e98ed4a5..408f5024c 100644
--- a/Library/Formula/cdo.rb
+++ b/Library/Formula/cdo.rb
@@ -1,22 +1,15 @@
 require 'formula'
 
-def grib2?
-  ARGV.include? '--enable-grib2'
-end
-
 class Cdo < Formula
   homepage 'https://code.zmaw.de/projects/cdo'
   url 'https://code.zmaw.de/attachments/download/3605/cdo-1.5.6.1.tar.gz'
-  version '1.5.6.1'
   sha1 '180517a3c234a47e5e19ae15084bb2fe2bda2d06'
 
+  options 'enable-grib2', 'Compile Fortran bindings'
+
   depends_on 'netcdf'
   depends_on 'hdf5'
-  depends_on 'grib-api' if grib2?
-
-  def options
-    [['--enable-grib2', 'Compile Fortran bindings']]
-  end
+  depends_on 'grib-api' => :optional if build.include? 'enable-grib2'
 
   def install
     args = ["--disable-debug", "--disable-dependency-tracking",
@@ -25,7 +18,7 @@ class Cdo < Formula
             "--with-hdf5=#{HOMEBREW_PREFIX}",
             "--with-szlib=#{HOMEBREW_PREFIX}"]
 
-    if grib2?
+    if build.include? 'enable-grib2'
       args << "--with-grib_api=#{HOMEBREW_PREFIX}"
       args << "--with-jasper=#{HOMEBREW_PREFIX}"
     end