{ pkgs, nix-filter }:

let
  filter = nix-filter.lib;
in
with pkgs;
defaultCrateOverrides
// {
  aws-lc-rs = attrs: {
    # aws-lc-rs does its own custom parsing of Cargo environment
    # variables like DEP_.*_INCLUDE. However buildRustCrate does
    # not use the version number, so the parsing fails.
    postPatch = ''
      substituteInPlace build.rs \
        --replace-fail \
        "assert!(!selected.is_empty()" \
        "// assert!(!selected.is_empty()"
    '';
  };
  rav1e = attrs: { env.CARGO_ENCODED_RUSTFLAGS = "-C target-feature=-crt-static"; };

  grpc-metadata = attrs: {
    src =
      filter {
        root = ../backends/grpc-metadata;
        include = with filter; [
          isDirectory
          (matchExt "rs")
        ];
      };
  };
  text-generation-launcer = attrs: {
    src =
      filter {
        root = ../launcher;
        include = with filter; [
          isDirectory
          (matchExt "rs")
        ];
      };
  };
  text-generation-router = attrs: {
    src =
      filter {
        root = ../router;
        include = with filter; [
          isDirectory
          (matchExt "rs")
        ];
      };
  };
  text-generation-router-v3 = attrs: {
    # We need to do the src/source root dance so that the build
    # has access to the protobuf file.
    src = filter {
      root = ../.;
      include = with filter; [
        isDirectory
        (and (inDirectory "backends/v3") (matchExt "rs"))
        (and (inDirectory "proto") (matchExt "proto"))
      ];
    };
    postPatch = "cd backends/v3";
    buildInputs = [ protobuf ];
  };
}