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, 191 deletions

diff --git a/third_party/nix/src/libexpr/value.hh b/third_party/nix/src/libexpr/value.hh
deleted file mode 100644
index 82021c77c41b..000000000000
--- a/third_party/nix/src/libexpr/value.hh
+++ /dev/null
@@ -1,191 +0,0 @@
-#pragma once
-
-#include <tuple>
-#include <vector>
-
-#include "libexpr/symbol-table.hh"
-#include "libutil/types.hh"
-
-namespace nix {
-
-using ValueType = enum {
-  tInt = 1,
-  tBool,
-  tString,
-  tPath,
-  tNull,
-  tAttrs,
-  tList,
-  tThunk,
-  tApp,
-  tLambda,
-  tBlackhole,
-  tPrimOp,
-  tPrimOpApp,
-  _reserved1,  // formerly tExternal
-  tFloat
-};
-
-class Bindings;
-struct Env;
-struct Expr;
-struct ExprLambda;
-struct PrimOp;
-struct PrimOp;
-class Symbol;
-
-typedef int64_t NixInt;
-typedef double NixFloat;
-
-// Forward declaration of Value is required because the following
-// types are mutually recursive.
-//
-// TODO(tazjin): Really, these types need some serious refactoring.
-struct Value;
-
-/* Strings in the evaluator carry a so-called `context' which
-   is a list of strings representing store paths.  This is to
-   allow users to write things like
-
-   "--with-freetype2-library=" + freetype + "/lib"
-
-   where `freetype' is a derivation (or a source to be copied
-   to the store).  If we just concatenated the strings without
-   keeping track of the referenced store paths, then if the
-   string is used as a derivation attribute, the derivation
-   will not have the correct dependencies in its inputDrvs and
-   inputSrcs.
-
-   The semantics of the context is as follows: when a string
-   with context C is used as a derivation attribute, then the
-   derivations in C will be added to the inputDrvs of the
-   derivation, and the other store paths in C will be added to
-   the inputSrcs of the derivations.
-
-   For canonicity, the store paths should be in sorted order. */
-struct NixString {
-  const char* s;
-  const char** context;  // must be in sorted order
-};
-
-struct NixThunk {
-  Env* env;
-  Expr* expr;
-};
-
-struct NixApp {
-  Value *left, *right;
-};
-
-struct NixLambda {
-  Env* env;
-  ExprLambda* fun;
-};
-
-struct NixPrimOpApp {
-  Value *left, *right;
-};
-
-using NixList = std::vector<Value*>;
-
-struct Value {
-  ValueType type;
-  union {  // TODO(tazjin): std::variant
-    NixInt integer;
-    bool boolean;
-    NixString string;
-    const char* path;
-    std::shared_ptr<Bindings> attrs;
-    std::shared_ptr<NixList> list;
-    NixThunk thunk;
-    NixApp app;  // TODO(tazjin): "app"?
-    NixLambda lambda;
-    std::shared_ptr<PrimOp> primOp;
-    NixPrimOpApp primOpApp;
-    NixFloat fpoint;
-  };
-
-  Value() : type(tInt), attrs(nullptr) {
-    static_assert(offsetof(Value, attrs) + sizeof(attrs) == sizeof(Value));
-  }
-
-  Value(const Value& copy);
-  Value(Value&& move);
-  ~Value() {}
-  Value& operator=(const Value& copy);
-  Value& operator=(Value&& move);
-
-  bool isList() const { return type == tList; }
-
-  size_t listSize() const { return list->size(); }
-};
-
-/* After overwriting an app node, be sure to clear pointers in the
-   Value to ensure that the target isn't kept alive unnecessarily. */
-static inline void clearValue(Value& v) { v.app.left = v.app.right = 0; }
-
-static inline void mkInt(Value& v, NixInt n) {
-  clearValue(v);
-  v.type = tInt;
-  v.integer = n;
-}
-
-static inline void mkFloat(Value& v, NixFloat n) {
-  clearValue(v);
-  v.type = tFloat;
-  v.fpoint = n;
-}
-
-static inline void mkBool(Value& v, bool b) {
-  clearValue(v);
-  v.type = tBool;
-  v.boolean = b;
-}
-
-static inline void mkNull(Value& v) {
-  clearValue(v);
-  v.type = tNull;
-}
-
-static inline void mkApp(Value& v, Value& left, Value& right) {
-  v.type = tApp;
-  v.app.left = &left;
-  v.app.right = &right;
-}
-
-static inline void mkPrimOpApp(Value& v, Value& left, Value& right) {
-  v.type = tPrimOpApp;
-  v.app.left = &left;
-  v.app.right = &right;
-}
-
-static inline void mkStringNoCopy(Value& v, const char* s) {
-  v.type = tString;
-  v.string.s = s;
-  v.string.context = 0;
-}
-
-static inline void mkString(Value& v, const Symbol& s) {
-  mkStringNoCopy(v, ((const std::string&)s).c_str());
-}
-
-void mkString(Value& v, const char* s);
-
-static inline void mkPathNoCopy(Value& v, const char* s) {
-  clearValue(v);
-  v.type = tPath;
-  v.path = s;
-}
-
-void mkPath(Value& v, const char* s);
-
-/* Compute the size in bytes of the given value, including all values
-   and environments reachable from it. Static expressions (Exprs) are
-   not included. */
-size_t valueSize(const Value& v);
-
-using ValueMap = std::map<Symbol, Value*>;
-
-std::shared_ptr<Value*> allocRootValue(Value* v);
-
-}  // namespace nix