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/binary-cache-store.hh b/third_party/nix/src/libstore/binary-cache-store.hh
index f5bd66bbd6e1..b8e1ccabf264 100644
--- a/third_party/nix/src/libstore/binary-cache-store.hh
+++ b/third_party/nix/src/libstore/binary-cache-store.hh
@@ -74,7 +74,7 @@ class BinaryCacheStore : public Store {
       const Path& path,
       Callback<std::shared_ptr<ValidPathInfo>> callback) noexcept override;
 
-  Path queryPathFromHashPart(const string& hashPart) override {
+  Path queryPathFromHashPart(const std::string& hashPart) override {
     unsupported("queryPathFromHashPart");
   }
 
@@ -84,11 +84,11 @@ class BinaryCacheStore : public Store {
                   RepairFlag repair, CheckSigsFlag checkSigs,
                   std::shared_ptr<FSAccessor> accessor) override;
 
-  Path addToStore(const string& name, const Path& srcPath, bool recursive,
+  Path addToStore(const std::string& name, const Path& srcPath, bool recursive,
                   HashType hashAlgo, PathFilter& filter,
                   RepairFlag repair) override;
 
-  Path addTextToStore(const string& name, const string& s,
+  Path addTextToStore(const std::string& name, const std::string& s,
                       const PathSet& references, RepairFlag repair) override;
 
   void narFromPath(const Path& path, Sink& sink) override;