push sheeet

pkgs/applications/virtualization/rust-hypervisor-firmware/default.nix

@@ -0,0 +1,66 @@
+{
+  lib,
+  fetchFromGitHub,
+  stdenv,
+  lld,
+}:
+
+let
+  arch = stdenv.hostPlatform.qemuArch;
+
+  target = ./. + "/${arch}-unknown-none.json";
+
+in
+
+let
+  cross = import ../../../.. {
+    system = stdenv.hostPlatform.system;
+    crossSystem = lib.systems.examples."${arch}-embedded" // {
+      rust.rustcTarget = "${arch}-unknown-none";
+      rust.platform =
+        assert lib.assertMsg (builtins.pathExists target) "Target spec not found";
+        lib.importJSON target;
+    };
+  };
+
+  inherit (cross) rustPlatform;
+
+in
+
+rustPlatform.buildRustPackage rec {
+  pname = "rust-hypervisor-firmware";
+  version = "0.5.0";
+
+  src = fetchFromGitHub {
+    owner = "cloud-hypervisor";
+    repo = "rust-hypervisor-firmware";
+    tag = version;
+    sha256 = "sha256-iLYmPBJH7I6EJ8VTUbR0+lZaebvbZlRv2KglbjKX76Q=";
+  };
+
+  cargoHash = "sha256-iqsU4t8Zz9UTtAu+a6kqwnPZ6qdGAriQ7hcU58KDQ8M=";
+
+  # lld: error: unknown argument '-Wl,--undefined=AUDITABLE_VERSION_INFO'
+  # https://github.com/cloud-hypervisor/rust-hypervisor-firmware/issues/249
+  auditable = false;
+
+  RUSTC_BOOTSTRAP = 1;
+
+  nativeBuildInputs = [
+    lld
+  ];
+
+  RUSTFLAGS = "-C linker=lld -C linker-flavor=ld.lld";
+
+  # Tests don't work for `no_std`. See https://os.phil-opp.com/testing/
+  doCheck = false;
+
+  meta = with lib; {
+    homepage = "https://github.com/cloud-hypervisor/rust-hypervisor-firmware";
+    description = "Simple firmware that is designed to be launched from anything that supports loading ELF binaries and running them with the PVH booting standard";
+    license = with licenses; [ asl20 ];
+    maintainers = with maintainers; [ astro ];
+    platforms = [ "x86_64-none" ];
+    mainProgram = "hypervisor-fw";
+  };
+}

pkgs/applications/virtualization/rust-hypervisor-firmware/x86_64-unknown-none.json

@@ -0,0 +1,20 @@
+{
+  "llvm-target": "x86_64-unknown-none",
+  "data-layout": "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128",
+  "arch": "x86_64",
+  "target-endian": "little",
+  "target-pointer-width": "64",
+  "target-c-int-width": "32",
+  "os": "none",
+  "executables": true,
+  "linker": "rust-lld",
+  "linker-flavor": "ld.lld",
+  "panic-strategy": "abort",
+  "disable-redzone": true,
+  "features": "-mmx,-sse,+soft-float",
+  "code-model": "small",
+  "relocation-model": "pic",
+  "pre-link-args": {
+    "ld.lld": ["--script=x86_64-unknown-none.ld"]
+  }
+}