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, 3 insertions, 3 deletions

diff --git a/third_party/nix/src/libstore/nar-accessor.cc b/third_party/nix/src/libstore/nar-accessor.cc
index 7f6e0377ae..84bfb531ec 100644
--- a/third_party/nix/src/libstore/nar-accessor.cc
+++ b/third_party/nix/src/libstore/nar-accessor.cc
@@ -74,7 +74,7 @@ struct NarAccessor : public FSAccessor {
     void isExecutable() override { parents.top()->isExecutable = true; }
 
     void preallocateContents(unsigned long long size) override {
-      currentStart = string(s, pos, 16);
+      currentStart = std::string(s, pos, 16);
       assert(size <= std::numeric_limits<size_t>::max());
       parents.top()->size = (size_t)size;
       parents.top()->start = pos;
@@ -83,12 +83,12 @@ struct NarAccessor : public FSAccessor {
     void receiveContents(unsigned char* data, unsigned int len) override {
       // Sanity check
       if (!currentStart.empty()) {
-        assert(len < 16 || currentStart == string((char*)data, 16));
+        assert(len < 16 || currentStart == std::string((char*)data, 16));
         currentStart.clear();
       }
     }
 
-    void createSymlink(const Path& path, const string& target) override {
+    void createSymlink(const Path& path, const std::string& target) override {
       createMember(path,
                    NarMember{FSAccessor::Type::tSymlink, false, 0, 0, target});
     }