feat(pkgs/jolt-guest-rust): Implement fetching prebuilt jolt std guest rust compiler

Author: Syndamia

packages/all-packages.nix

@@ -202,6 +202,7 @@
 
         zkwasm = callPackage ./zkwasm/default.nix args-zkVM;
         jolt = callPackage ./jolt/default.nix args-zkVM;
+        jolt-guest-rust = callPackage ./jolt-guest-rust/default.nix args-zkVM-rust;
         zkm = callPackage ./zkm/default.nix args-zkVM;
         nexus = callPackage ./nexus/default.nix args-zkVM;
         sp1-rust = callPackage ./sp1-rust/default.nix args-zkVM-rust;

packages/jolt-guest-rust/default.nix

@@ -0,0 +1,34 @@
+{ stdenv,
+  fetchGitHubReleaseAsset,
+  autoPatchelfHook,
+  zlib,
+  ...
+}:
+let
+  nightly-hash = "8af9d45d5e09a04832cc9b2e1df993fd1ce49d02";
+in
+  stdenv.mkDerivation rec {
+    name = "jolt-guest-rust"; # Used when guest is compiled with std
+    version = "nightly-${nightly-hash}";
+
+    nativeBuildInputs = [
+      autoPatchelfHook
+      stdenv.cc.cc.lib
+      zlib
+    ];
+
+    installPhase = ''
+      runHook preInstall
+      mkdir -p $out
+      cp -r ./* $out/
+      runHook postInstall
+    '';
+
+    src = fetchGitHubReleaseAsset {
+      owner = "a16z";
+      repo = "rust";
+      tag  = "${version}";
+      asset = "rust-toolchain-x86_64-unknown-linux-gnu.tar.gz";
+      hash = "sha256-aAhqLAvbeIh60R/E1c85KxWmYDH2SOpXhQChW3y3wgQ=";
+    };
+  }