3 files changed, 47 insertions(+), 4 deletions(-)

M .builds.dhall/debian-stable.dhall
M .builds/debian-stable.yml
M bin/dhall-compile

@@ 19,10 19,23 @@
 			make lint
 			bundle install --path="../.gems"
 			make test
+			''
+		},
+		{ build =
+			''
+			cd dhall-ruby
 			bundle exec ruby -E UTF-8 bin/dhall-compile -e -o /tmp/Prelude dhall-lang/Prelude
 			tar -cJf Prelude.tar.xz /tmp/Prelude/
 			curl -F'file=@Prelude.tar.xz' http://0x0.st
 			''
+		},
+		{ build =
+			''
+			cd dhall-ruby
+			bundle exec ruby -E UTF-8 bin/dhall-compile -co /tmp/PreludeCache dhall-lang/Prelude
+			tar -cJf PreludeCache.tar.xz /tmp/PreludeCache/
+			curl -F'file=@PreludeCache.tar.xz' http://0x0.st
+			''
 		}
 	]
 }

@@ 9,9 9,16 @@ tasks:
     make lint
     bundle install --path="../.gems"
     make test
+- build: |
+    cd dhall-ruby
     bundle exec ruby -E UTF-8 bin/dhall-compile -e -o /tmp/Prelude dhall-lang/Prelude
     tar -cJf Prelude.tar.xz /tmp/Prelude/
     curl -F'file=@Prelude.tar.xz' http://0x0.st
+- build: |
+    cd dhall-ruby
+    bundle exec ruby -E UTF-8 bin/dhall-compile -co /tmp/PreludeCache dhall-lang/Prelude
+    tar -cJf PreludeCache.tar.xz /tmp/PreludeCache/
+    curl -F'file=@PreludeCache.tar.xz' http://0x0.st
 packages:
 - bundler
 - curl

@@ 13,17 13,31 @@ def compile(source)
 		resolver: Dhall::Resolvers::Default.new(
 			max_depth: Float::INFINITY
 		)
-	).then(&:to_binary)
+	)
 end
 
 def compile_file(file_path, relative_to: Pathname.new("."))
 	out = file_path.sub_ext(@extension)
 	if @output_directory
 		out = @output_directory + out.relative_path_from(relative_to)
-		out.dirname.mkpath
 	end
-	warn "#{file_path} => #{out}"
-	compile(file_path.expand_path).then(&out.method(:write))
+	$stderr.print "#{file_path} => "
+	warn out unless @cache
+	compile(file_path.expand_path).then { |dhall|
+		if @cache
+			base = "1220#{dhall.digest.hexdigest}"
+			out = file_path.dirname + base
+			if @output_directory
+				out = @output_directory + base
+				out.dirname.mkpath
+			end
+			warn out
+			out.write(dhall.to_cbor)
+		else
+			out.dirname.mkpath
+			out.write(dhall.to_binary)
+		end
+	}
 end
 
 opt_parser = OptionParser.new do |opts|


@@ 45,6 59,15 @@ opt_parser = OptionParser.new do |opts|
 		@extension = ext ? ".#{ext}" : ""
 	end
 
+	opts.on(
+		"-c",
+		"--cache",
+		"Write output in standard dhall file cache format"
+	) do
+		@extension = ""
+		@cache = true
+	end
+
 	opts.on("-h", "--help", "Show this usage information") do
 		warn opts
 		exit