message: nix: add some cargo tools
diff: @@ -5,6 +5,8 @@ stdenv.mkDerivation rec {
  buildInputs = [
  pkgs.latest.rustChannels.nightly.rust
  pkgs.cargo-edit
  + pkgs.cargo-tree
  + pkgs.cargo-license
  pkgs.rustfmt
  pkgs.openssl
  pkgs.pkg-config
  @@ -32,7 +34,9 @@ stdenv.mkDerivation rec {
  export PYTHONPATH=`pwd`/$VENV/${python.sitePackages}/:$PYTHONPATH
  export LD_LIBRARY_PATH=${lib.makeLibraryPath [ stdenv.cc.cc ]}
  - export LIBTCMALLOC_PATH=${lib.makeLibraryPath [ pkgs.gperftools ]}/libtcmalloc.so
  + export LIBTCMALLOC_PATH=${
  + lib.makeLibraryPath [ pkgs.gperftools ]
  + }/libtcmalloc.so
  # This is to profile memory usage in the aggregator. See:
  # https://stackoverflow.com/questions/38254937/how-do-i-debug-a-memory-issue-in-rust
  