style(3p/nix): Remove 'using std::*' from types.hh r/840

It is considered bad form to use things from includes in headers, as
these directives propagate to everywhere else and can make it
confusing.

types.hh (which is includes almost literally everywhere) had some of
these directives, which this commit removes.

1 files changed, 5 insertions, 5 deletions

diff --git a/third_party/nix/src/libexpr/primops/context.cc b/third_party/nix/src/libexpr/primops/context.cc
index 2ae8ba8aa99e..481a2910bf84 100644
--- a/third_party/nix/src/libexpr/primops/context.cc
+++ b/third_party/nix/src/libexpr/primops/context.cc
@@ -36,7 +36,7 @@ static void prim_unsafeDiscardOutputDependency(EvalState& state, const Pos& pos,
 
   PathSet context2;
   for (auto& p : context) {
-    context2.insert(p.at(0) == '=' ? string(p, 1) : p);
+    context2.insert(p.at(0) == '=' ? std::string(p, 1) : p);
   }
 
   mkString(v, s, context2);
@@ -79,10 +79,10 @@ static void prim_getContext(EvalState& state, const Pos& pos, Value** args,
     std::string output;
     const Path* path = &p;
     if (p.at(0) == '=') {
-      drv = string(p, 1);
+      drv = std::string(p, 1);
       path = &drv;
     } else if (p.at(0) == '!') {
-      std::pair<string, string> ctx = decodeContext(p);
+      std::pair<std::string, std::string> ctx = decodeContext(p);
       drv = ctx.first;
       output = ctx.second;
       path = &drv;
@@ -170,7 +170,7 @@ static void prim_appendContext(EvalState& state, const Pos& pos, Value** args,
               "derivation, to a string, at %s",
               i->name, i->pos);
         }
-        context.insert("=" + string(i->name));
+        context.insert("=" + std::string(i->name));
       }
     }
 
@@ -186,7 +186,7 @@ static void prim_appendContext(EvalState& state, const Pos& pos, Value** args,
       for (unsigned int n = 0; n < iter->second.value->listSize(); ++n) {
         auto name = state.forceStringNoCtx(*iter->second.value->listElems()[n],
                                            *iter->second.pos);
-        context.insert("!" + name + "!" + string(i->name));
+        context.insert("!" + name + "!" + std::string(i->name));
       }
     }
   }