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/remote-store.hh b/third_party/nix/src/libstore/remote-store.hh
index dc44cd32ac47..e61e72892c34 100644
--- a/third_party/nix/src/libstore/remote-store.hh
+++ b/third_party/nix/src/libstore/remote-store.hh
@@ -52,7 +52,7 @@ class RemoteStore : public virtual Store {
 
   StringSet queryDerivationOutputNames(const Path& path) override;
 
-  Path queryPathFromHashPart(const string& hashPart) override;
+  Path queryPathFromHashPart(const std::string& hashPart) override;
 
   PathSet querySubstitutablePaths(const PathSet& paths) override;
 
@@ -63,12 +63,12 @@ class RemoteStore : public virtual Store {
                   CheckSigsFlag checkSigs,
                   std::shared_ptr<FSAccessor> accessor) override;
 
-  Path addToStore(const string& name, const Path& srcPath,
+  Path addToStore(const std::string& name, const Path& srcPath,
                   bool recursive = true, HashType hashAlgo = htSHA256,
                   PathFilter& filter = defaultPathFilter,
                   RepairFlag repair = NoRepair) 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 buildPaths(const PathSet& paths, BuildMode buildMode) override;