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, 6 insertions, 6 deletions

diff --git a/third_party/nix/src/nix-store/graphml.cc b/third_party/nix/src/nix-store/graphml.cc
index a1a16cc8f2..86b1c6b942 100644
--- a/third_party/nix/src/nix-store/graphml.cc
+++ b/third_party/nix/src/nix-store/graphml.cc
@@ -10,23 +10,23 @@ using std::cout;
 
 namespace nix {
 
-static inline const string& xmlQuote(const string& s) {
+static inline const std::string& xmlQuote(const std::string& s) {
   // Luckily, store paths shouldn't contain any character that needs to be
   // quoted.
   return s;
 }
 
-static string symbolicName(const string& path) {
-  string p = baseNameOf(path);
-  return string(p, p.find('-') + 1);
+static std::string symbolicName(const std::string& path) {
+  std::string p = baseNameOf(path);
+  return std::string(p, p.find('-') + 1);
 }
 
-static string makeEdge(const string& src, const string& dst) {
+static std::string makeEdge(const std::string& src, const std::string& dst) {
   return fmt("  <edge source=\"%1%\" target=\"%2%\"/>\n", xmlQuote(src),
              xmlQuote(dst));
 }
 
-static string makeNode(const ValidPathInfo& info) {
+static std::string makeNode(const ValidPathInfo& info) {
   return fmt(
       "  <node id=\"%1%\">\n"
       "    <data key=\"narSize\">%2%</data>\n"