1 files changed, 51 insertions, 0 deletions
diff --git a/third_party/nix/src/nix/add-to-store.cc b/third_party/nix/src/nix/add-to-store.cc
new file mode 100644
index 000000000000..b7fda9c9d390
--- /dev/null
+++ b/third_party/nix/src/nix/add-to-store.cc
@@ -0,0 +1,51 @@
+#include "archive.hh"
+#include "command.hh"
+#include "common-args.hh"
+#include "store-api.hh"
+
+using namespace nix;
+
+struct CmdAddToStore : MixDryRun, StoreCommand {
+  Path path;
+  std::optional<std::string> namePart;
+
+  CmdAddToStore() {
+    expectArg("path", &path);
+
+    mkFlag()
+        .longName("name")
+        .shortName('n')
+        .description("name component of the store path")
+        .labels({"name"})
+        .dest(&namePart);
+  }
+
+  std::string name() override { return "add-to-store"; }
+
+  std::string description() override { return "add a path to the Nix store"; }
+
+  Examples examples() override { return {}; }
+
+  void run(ref<Store> store) override {
+    if (!namePart) {
+      namePart = baseNameOf(path);
+    }
+
+    StringSink sink;
+    dumpPath(path, sink);
+
+    ValidPathInfo info;
+    info.narHash = hashString(htSHA256, *sink.s);
+    info.narSize = sink.s->size();
+    info.path = store->makeFixedOutputPath(true, info.narHash, *namePart);
+    info.ca = makeFixedOutputCA(true, info.narHash);
+
+    if (!dryRun) {
+      store->addToStore(info, sink.s);
+    }
+
+    std::cout << fmt("%s\n", info.path);
+  }
+};
+
+static RegisterCommand r1(make_ref<CmdAddToStore>());