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, 109 deletions

diff --git a/third_party/nix/src/libexpr/attr-path.cc b/third_party/nix/src/libexpr/attr-path.cc
deleted file mode 100644
index 86ebeec2fb15..000000000000
--- a/third_party/nix/src/libexpr/attr-path.cc
+++ /dev/null
@@ -1,109 +0,0 @@
-#include "libexpr/attr-path.hh"
-
-#include <absl/strings/numbers.h>
-
-#include "libexpr/eval-inline.hh"
-#include "libutil/util.hh"
-
-namespace nix {
-
-static Strings parseAttrPath(const std::string& s) {
-  Strings res;
-  std::string cur;
-  std::string::const_iterator i = s.begin();
-  while (i != s.end()) {
-    if (*i == '.') {
-      res.push_back(cur);
-      cur.clear();
-    } else if (*i == '"') {
-      ++i;
-      while (true) {
-        if (i == s.end()) {
-          throw Error(format("missing closing quote in selection path '%1%'") %
-                      s);
-        }
-        if (*i == '"') {
-          break;
-        }
-        cur.push_back(*i++);
-      }
-    } else {
-      cur.push_back(*i);
-    }
-    ++i;
-  }
-  if (!cur.empty()) {
-    res.push_back(cur);
-  }
-  return res;
-}
-
-Value* findAlongAttrPath(EvalState& state, const std::string& attrPath,
-                         Bindings* autoArgs, Value& vIn) {
-  Strings tokens = parseAttrPath(attrPath);
-
-  Error attrError =
-      Error(format("attribute selection path '%1%' does not match expression") %
-            attrPath);
-
-  Value* v = &vIn;
-
-  for (auto& attr : tokens) {
-    /* Is i an index (integer) or a normal attribute name? */
-    enum { apAttr, apIndex } apType = apAttr;
-    unsigned int attrIndex;
-    if (absl::SimpleAtoi(attr, &attrIndex)) {
-      apType = apIndex;
-    }
-
-    /* Evaluate the expression. */
-    Value* vNew = state.allocValue();
-    state.autoCallFunction(autoArgs, *v, *vNew);
-    v = vNew;
-    state.forceValue(*v);
-
-    /* It should evaluate to either a set or an expression,
-       according to what is specified in the attrPath. */
-
-    if (apType == apAttr) {
-      if (v->type != tAttrs) {
-        throw TypeError(format("the expression selected by the selection path "
-                               "'%1%' should be a set but is %2%") %
-                        attrPath % showType(*v));
-      }
-
-      if (attr.empty()) {
-        throw Error(format("empty attribute name in selection path '%1%'") %
-                    attrPath);
-      }
-
-      Bindings::iterator a = v->attrs->find(state.symbols.Create(attr));
-      if (a == v->attrs->end()) {
-        throw Error(
-            format("attribute '%1%' in selection path '%2%' not found") % attr %
-            attrPath);
-      }
-      v = &*(a->second).value;
-    }
-
-    else if (apType == apIndex) {
-      if (!v->isList()) {
-        throw TypeError(format("the expression selected by the selection path "
-                               "'%1%' should be a list but is %2%") %
-                        attrPath % showType(*v));
-      }
-
-      if (attrIndex >= v->listSize()) {
-        throw Error(
-            format("list index %1% in selection path '%2%' is out of range") %
-            attrIndex % attrPath);
-      }
-
-      v = (*v->list)[attrIndex];
-    }
-  }
-
-  return v;
-}
-
-}  // namespace nix