Software Packages in "squeeze-backports", Subsection lisp

plt-scheme (5.2.1+dfsg1-5~bpo60+1) [backports]
Racket Programming Environment (transitional package)
plt-scheme
virtual package provided by racket
racket (5.2.1+dfsg1-5~bpo60+1 [amd64, armel, i386, kfreebsd-amd64, kfreebsd-i386, mips, mipsel, s390, sparc], 5.1.3+dfsg1-1~bpo60+1 [powerpc]) [backports]
extensible programming language in the Scheme family
racket-common (5.2.1+dfsg1-5~bpo60+1) [backports]
extensible programming language in the Scheme family (shared files)