(specifications->manifest
 (map symbol->string
      '(bash
        coreutils
        findutils
        diffutils
        grep
        sed
        git
        tar
        gzip
        gawk
        make
        perl
        shellcheck
        pandoc
        groff
        gettext

        posix-c99
        clang-toolchain
        valgrind
        fallible-latest
        remembering-latest)))