(specifications->manifest
 '("bear"
   "clang" ; for clang-format
   "gcc-toolchain"
   "ccls"
   "lcov"
   "gdb"
   "gperftools"
   "hyperfine"
   "man-db"
   "man-pages"
   "man-pages-posix"
   "perf"
   "flamegraph"
   "valgrind"))