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, 4 insertions, 4 deletions

diff --git a/third_party/nix/src/libstore/profiles.hh b/third_party/nix/src/libstore/profiles.hh
index ab31cc993a..9f31083b32 100644
--- a/third_party/nix/src/libstore/profiles.hh
+++ b/third_party/nix/src/libstore/profiles.hh
@@ -15,7 +15,7 @@ struct Generation {
   operator bool() const { return number != -1; }
 };
 
-typedef list<Generation> Generations;
+typedef std::list<Generation> Generations;
 
 /* Returns the list of currently present generations for the specified
    profile, sorted by generation number. */
@@ -38,8 +38,8 @@ void deleteOldGenerations(const Path& profile, bool dryRun);
 
 void deleteGenerationsOlderThan(const Path& profile, time_t t, bool dryRun);
 
-void deleteGenerationsOlderThan(const Path& profile, const string& timeSpec,
-                                bool dryRun);
+void deleteGenerationsOlderThan(const Path& profile,
+                                const std::string& timeSpec, bool dryRun);
 
 void switchLink(const Path& link, Path target);
 
@@ -56,6 +56,6 @@ void lockProfile(PathLocks& lock, const Path& profile);
    generally cheap, since the build results are still in the Nix
    store.  Most of the time, only the user environment has to be
    rebuilt. */
-string optimisticLockProfile(const Path& profile);
+std::string optimisticLockProfile(const Path& profile);
 
 }  // namespace nix