feat(tvix): Implement AddIndirectRoot, SyncWithGC r/1583

Implement RPC handlers and client methods for the AddWithRoot and
SyncWithGC calls. With this and sandboxing disabled, the following
derivation is now building successfully:

    derivation {
      name = "test";
      builder = "/bin/sh";
      args = [ "-c" "echo 1 > $out" ];
      system = "x86_64-linux";
    }

Co-authored-by: Vincent Ambo <mail@tazj.in>
Change-Id: I245dca0dfca882e2eae5d93364287a8b79fead71
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1637
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: kanepyork <rikingcoding@gmail.com>
Tested-by: BuildkiteCI

1 files changed, 7 insertions, 2 deletions

diff --git a/third_party/nix/src/libstore/rpc-store.cc b/third_party/nix/src/libstore/rpc-store.cc
index 5a0a2c98969a..f0abdd42efa9 100644
--- a/third_party/nix/src/libstore/rpc-store.cc
+++ b/third_party/nix/src/libstore/rpc-store.cc
@@ -15,6 +15,7 @@
 #include <grpcpp/impl/codegen/status.h>
 #include <grpcpp/impl/codegen/sync_stream.h>
 #include <grpcpp/security/credentials.h>
+#include <sys/ucontext.h>
 
 #include "libproto/worker.grpc.pb.h"
 #include "libproto/worker.pb.h"
@@ -355,11 +356,15 @@ void RpcStore::addTempRoot(const Path& path) {
 }
 
 void RpcStore::addIndirectRoot(const Path& path) {
-  throw Unsupported(absl::StrCat("Not implemented ", __func__));
+  ClientContext ctx;
+  google::protobuf::Empty response;
+  SuccessOrThrow(stub_->AddIndirectRoot(&ctx, StorePath(path), &response));
 }
 
 void RpcStore::syncWithGC() {
-  throw Unsupported(absl::StrCat("Not implemented ", __func__));
+  ClientContext ctx;
+  google::protobuf::Empty response;
+  SuccessOrThrow(stub_->SyncWithGC(&ctx, kEmpty, &response));
 }
 
 Roots RpcStore::findRoots(bool censor) {