{ lib, stdenv, fetchFromGitHub, rustPlatform, CoreServices, cmake , libiconv , useMimalloc ? false , doCheck ? true }: let rev = "2021-04-05"; in rustPlatform.buildRustPackage { pname = "rust-analyzer-unwrapped"; version = "unstable-${rev}"; cargoSha256 = "sha256-kDwdKa08E0h24lOOa7ALeNqHlMjMry/ru1qwCIyKmuE="; src = fetchFromGitHub { owner = "rust-analyzer"; repo = "rust-analyzer"; inherit rev; sha256 = "sha256-ZDxy87F3uz8bTF1/2LIy5r4Nv/M3xe97F7mwJNEFcUs="; }; buildAndTestSubdir = "crates/rust-analyzer"; cargoBuildFlags = lib.optional useMimalloc "--features=mimalloc"; nativeBuildInputs = lib.optional useMimalloc cmake; buildInputs = lib.optionals stdenv.isDarwin [ CoreServices libiconv ]; RUST_ANALYZER_REV = rev; inherit doCheck; preCheck = lib.optionalString doCheck '' export RUST_SRC_PATH=${rustPlatform.rustLibSrc} ''; doInstallCheck = true; installCheckPhase = '' runHook preInstallCheck versionOutput="$($out/bin/rust-analyzer --version)" echo "'rust-analyzer --version' returns: $versionOutput" [[ "$versionOutput" == "rust-analyzer ${rev}" ]] runHook postInstallCheck ''; passthru.updateScript = ./update.sh; meta = with lib; { description = "An experimental modular compiler frontend for the Rust language"; homepage = "https://github.com/rust-analyzer/rust-analyzer"; license = with licenses; [ mit asl20 ]; maintainers = with maintainers; [ oxalica ]; }; }