weaver: install shell completions

{

  lib,

  stdenv,

  rustPlatform,

  fetchFromGitHub,

  testers,

  installShellFiles,

}:

rustPlatform.buildRustPackage (finalAttrs: {

    "--skip=test_cli_interface"

  ];

  nativeBuildInputs = [ installShellFiles ];

  postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''

    installShellCompletion --cmd ${finalAttrs.meta.mainProgram} \

      --bash <($out/bin/${finalAttrs.meta.mainProgram} completion bash) \

      --zsh <($out/bin/${finalAttrs.meta.mainProgram} completion zsh) \

      --fish <($out/bin/${finalAttrs.meta.mainProgram} completion fish)

  '';

  passthru.tests.version = testers.testVersion {

    package = finalAttrs.finalPackage;

  };