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/libexpr/names.hh b/third_party/nix/src/libexpr/names.hh
index e2ddb5cb993e..521740152ca2 100644
--- a/third_party/nix/src/libexpr/names.hh
+++ b/third_party/nix/src/libexpr/names.hh
@@ -21,10 +21,10 @@ struct DrvName {
   std::unique_ptr<std::regex> regex;
 };
 
-typedef list<DrvName> DrvNames;
+typedef std::list<DrvName> DrvNames;
 
-string nextComponent(string::const_iterator& p,
-                     const string::const_iterator end);
+std::string nextComponent(std::string::const_iterator& p,
+                          const std::string::const_iterator end);
 int compareVersions(const std::string& v1, const std::string& v2);
 DrvNames drvNamesFromArgs(const Strings& opArgs);