chore(3p/nix): unvendor tvix 0.1 r/4098

Nothing is using this now, and we'll likely never pick this up again,
but we learned a lot in the process.

Every now and then this breaks in some bizarre way on channel bumps
and it's just a waste of time to maintain that.

Change-Id: Idcf2f5acd4ca7070ce18d7149cbfc0d967dc0a44
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5632
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: lukegb <lukegb@tvl.fyi>
Autosubmit: tazjin <tazjin@tvl.su>

1 files changed, 0 insertions, 65 deletions

diff --git a/third_party/nix/src/libutil/ref.hh b/third_party/nix/src/libutil/ref.hh
deleted file mode 100644
index 3c375491fd0b..000000000000
--- a/third_party/nix/src/libutil/ref.hh
+++ /dev/null
@@ -1,65 +0,0 @@
-#pragma once
-
-#include <exception>
-#include <memory>
-#include <stdexcept>
-
-namespace nix {
-
-/* A simple non-nullable reference-counted pointer. Actually a wrapper
-   around std::shared_ptr that prevents non-null constructions. */
-template <typename T>
-class ref {  // TODO(tazjin): rename to brainworm_ref or something
- private:
-  std::shared_ptr<T> p;
-
- public:
-  ref<T>(const ref<T>& r) : p(r.p) {}
-
-  explicit ref<T>(const std::shared_ptr<T>& p) : p(p) {
-    if (!p) {
-      throw std::invalid_argument("null pointer cast to ref");
-    }
-  }
-
-  explicit ref<T>(T* p) : p(p) {
-    if (!p) {
-      throw std::invalid_argument("null pointer cast to ref");
-    }
-  }
-
-  T* operator->() const { return &*p; }
-
-  T& operator*() const { return *p; }
-
-  operator std::shared_ptr<T>() const { return p; }
-
-  std::shared_ptr<T> get_ptr() const { return p; }
-
-  template <typename T2>
-  ref<T2> cast() const {
-    return ref<T2>(std::dynamic_pointer_cast<T2>(p));
-  }
-
-  template <typename T2>
-  std::shared_ptr<T2> dynamic_pointer_cast() const {
-    return std::dynamic_pointer_cast<T2>(p);
-  }
-
-  template <typename T2>
-  operator ref<T2>() const {
-    return ref<T2>((std::shared_ptr<T2>)p);
-  }
-
- private:
-  template <typename T2, typename... Args>
-  friend ref<T2> make_ref(Args&&... args);
-};
-
-template <typename T, typename... Args>
-inline ref<T> make_ref(Args&&... args) {
-  auto p = std::make_shared<T>(std::forward<Args>(args)...);
-  return ref<T>(p);
-}
-
-}  // namespace nix