Added a generator for CPAN expressions. Expressions often require manual editing, but still something..

svn path=/nixpkgs/trunk/; revision=11947

pkgs/development/perl-modules/expression-generator/requirements.sh

@@ -0,0 +1,17 @@
+#! /bin/sh
+
+source lib-cache.sh;
+
+module_name="$1";
+module_basename="${1//::/-}";
+
+print_requirements () {
+	module_name="$1";
+	
+	./retrieve-meta-yaml.sh "$module_name" |
+		sed -re '1,/^requires:/d; /^[a-z]/,$d; s@^\s*@@; s@:\s.*@@';
+	./retrieve-meta-yaml.sh "$module_name" |
+		sed -re '1,/^build_requires:/d; /^[a-z]/,$d; s@^\s*@@; s@:\s.*@@';
+};
+
+cached_output print_requirements "$module_basename" "$module_name" "direct.deps";