<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd"> <pkgmetadata> <herd>scheme</herd> <longdescription lang="en"> PLT Scheme(DrScheme) is an interactive, integrated, graphical programming environment for the Scheme, MzScheme, and MrEd programming languages. PLT Scheme provides source highlighting for syntax and run-time errors, support for multiple language levels, an algebraic stepper, objects, modules, a GUI library, TCP/IP, and much more. It includes an extensive, hyper-linked help system called Help Desk. </longdescription> <use> <flag name='backtrace'> Support GC backtrace dumps </flag> <flag name='cgc'> Compile and install additional executables which use the conservative garbage collector </flag> <flag name='llvm'> Add support for compiling to the low-level virtual machine (llvm) </flag> </use> </pkgmetadata>