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, 202 deletions

diff --git a/third_party/nix/src/libexpr/primops/context.cc b/third_party/nix/src/libexpr/primops/context.cc
deleted file mode 100644
index fb8879ead16d..000000000000
--- a/third_party/nix/src/libexpr/primops/context.cc
+++ /dev/null
@@ -1,202 +0,0 @@
-#include "libexpr/eval-inline.hh"
-#include "libexpr/primops.hh"
-#include "libstore/derivations.hh"
-
-namespace nix {
-
-static void prim_unsafeDiscardStringContext(EvalState& state, const Pos& pos,
-                                            Value** args, Value& v) {
-  PathSet context;
-  std::string s = state.coerceToString(pos, *args[0], context);
-  mkString(v, s, PathSet());
-}
-
-static RegisterPrimOp r1("__unsafeDiscardStringContext", 1,
-                         prim_unsafeDiscardStringContext);
-
-static void prim_hasContext(EvalState& state, const Pos& pos, Value** args,
-                            Value& v) {
-  PathSet context;
-  state.forceString(*args[0], context, pos);
-  mkBool(v, !context.empty());
-}
-
-static RegisterPrimOp r2("__hasContext", 1, prim_hasContext);
-
-/* Sometimes we want to pass a derivation path (i.e. pkg.drvPath) to a
-   builder without causing the derivation to be built (for instance,
-   in the derivation that builds NARs in nix-push, when doing
-   source-only deployment).  This primop marks the string context so
-   that builtins.derivation adds the path to drv.inputSrcs rather than
-   drv.inputDrvs. */
-static void prim_unsafeDiscardOutputDependency(EvalState& state, const Pos& pos,
-                                               Value** args, Value& v) {
-  PathSet context;
-  std::string s = state.coerceToString(pos, *args[0], context);
-
-  PathSet context2;
-  for (auto& p : context) {
-    context2.insert(p.at(0) == '=' ? std::string(p, 1) : p);
-  }
-
-  mkString(v, s, context2);
-}
-
-static RegisterPrimOp r3("__unsafeDiscardOutputDependency", 1,
-                         prim_unsafeDiscardOutputDependency);
-
-/* Extract the context of a string as a structured Nix value.
-
-   The context is represented as an attribute set whose keys are the
-   paths in the context set and whose values are attribute sets with
-   the following keys:
-     path: True if the relevant path is in the context as a plain store
-           path (i.e. the kind of context you get when interpolating
-           a Nix path (e.g. ./.) into a string). False if missing.
-     allOutputs: True if the relevant path is a derivation and it is
-                  in the context as a drv file with all of its outputs
-                  (i.e. the kind of context you get when referencing
-                  .drvPath of some derivation). False if missing.
-     outputs: If a non-empty list, the relevant path is a derivation
-              and the provided outputs are referenced in the context
-              (i.e. the kind of context you get when referencing
-              .outPath of some derivation). Empty list if missing.
-   Note that for a given path any combination of the above attributes
-   may be present.
-*/
-static void prim_getContext(EvalState& state, const Pos& pos, Value** args,
-                            Value& v) {
-  struct ContextInfo {
-    bool path = false;
-    bool allOutputs = false;
-    Strings outputs;
-  };
-  PathSet context;
-  state.forceString(*args[0], context, pos);
-  auto contextInfos = std::map<Path, ContextInfo>();
-  for (const auto& p : context) {
-    Path drv;
-    std::string output;
-    const Path* path = &p;
-    if (p.at(0) == '=') {
-      drv = std::string(p, 1);
-      path = &drv;
-    } else if (p.at(0) == '!') {
-      std::pair<std::string, std::string> ctx = decodeContext(p);
-      drv = ctx.first;
-      output = ctx.second;
-      path = &drv;
-    }
-    auto isPath = drv.empty();
-    auto isAllOutputs = (!drv.empty()) && output.empty();
-
-    auto iter = contextInfos.find(*path);
-    if (iter == contextInfos.end()) {
-      contextInfos.emplace(
-          *path,
-          ContextInfo{isPath, isAllOutputs,
-                      output.empty() ? Strings{} : Strings{std::move(output)}});
-    } else {
-      if (isPath) {
-        iter->second.path = true;
-      } else if (isAllOutputs) {
-        iter->second.allOutputs = true;
-      } else {
-        iter->second.outputs.emplace_back(std::move(output));
-      }
-    }
-  }
-
-  state.mkAttrs(v, contextInfos.size());
-
-  auto sPath = state.symbols.Create("path");
-  auto sAllOutputs = state.symbols.Create("allOutputs");
-  for (const auto& info : contextInfos) {
-    auto& infoVal = *state.allocAttr(v, state.symbols.Create(info.first));
-    state.mkAttrs(infoVal, 3);
-    if (info.second.path) {
-      mkBool(*state.allocAttr(infoVal, sPath), true);
-    }
-    if (info.second.allOutputs) {
-      mkBool(*state.allocAttr(infoVal, sAllOutputs), true);
-    }
-    if (!info.second.outputs.empty()) {
-      auto& outputsVal = *state.allocAttr(infoVal, state.sOutputs);
-      state.mkList(outputsVal, info.second.outputs.size());
-      size_t i = 0;
-      for (const auto& output : info.second.outputs) {
-        mkString(*((*outputsVal.list)[i++] = state.allocValue()), output);
-      }
-    }
-  }
-}
-
-static RegisterPrimOp r4("__getContext", 1, prim_getContext);
-
-/* Append the given context to a given string.
-
-   See the commentary above unsafeGetContext for details of the
-   context representation.
-*/
-static void prim_appendContext(EvalState& state, const Pos& pos, Value** args,
-                               Value& v) {
-  PathSet context;
-  auto orig = state.forceString(*args[0], context, pos);
-
-  state.forceAttrs(*args[1], pos);
-
-  auto sPath = state.symbols.Create("path");
-  auto sAllOutputs = state.symbols.Create("allOutputs");
-  for (const auto& attr_iter : *args[1]->attrs) {
-    const Attr* i = &attr_iter.second;  // TODO(tazjin): get rid of this
-    if (!state.store->isStorePath(i->name)) {
-      throw EvalError("Context key '%s' is not a store path, at %s", i->name,
-                      i->pos);
-    }
-    if (!settings.readOnlyMode) {
-      state.store->ensurePath(i->name);
-    }
-    state.forceAttrs(*i->value, *i->pos);
-    auto iter = i->value->attrs->find(sPath);
-    if (iter != i->value->attrs->end()) {
-      if (state.forceBool(*iter->second.value, *iter->second.pos)) {
-        context.insert(i->name);
-      }
-    }
-
-    iter = i->value->attrs->find(sAllOutputs);
-    if (iter != i->value->attrs->end()) {
-      if (state.forceBool(*iter->second.value, *iter->second.pos)) {
-        if (!isDerivation(i->name)) {
-          throw EvalError(
-              "Tried to add all-outputs context of %s, which is not a "
-              "derivation, to a string, at %s",
-              i->name, i->pos);
-        }
-        context.insert("=" + std::string(i->name));
-      }
-    }
-
-    iter = i->value->attrs->find(state.sOutputs);
-    if (iter != i->value->attrs->end()) {
-      state.forceList(*iter->second.value, *iter->second.pos);
-      if (iter->second.value->listSize() && !isDerivation(i->name)) {
-        throw EvalError(
-            "Tried to add derivation output context of %s, which is not a "
-            "derivation, to a string, at %s",
-            i->name, i->pos);
-      }
-      for (unsigned int n = 0; n < iter->second.value->listSize(); ++n) {
-        auto name = state.forceStringNoCtx(*(*iter->second.value->list)[n],
-                                           *iter->second.pos);
-        context.insert("!" + name + "!" + std::string(i->name));
-      }
-    }
-  }
-
-  mkString(v, orig, context);
-}
-
-static RegisterPrimOp r5("__appendContext", 2, prim_appendContext);
-
-}  // namespace nix