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, 3 deletions

diff --git a/third_party/nix/src/libstore/s3-binary-cache-store.cc b/third_party/nix/src/libstore/s3-binary-cache-store.cc
index df3afab3cf32..2b25fd874437 100644
--- a/third_party/nix/src/libstore/s3-binary-cache-store.cc
+++ b/third_party/nix/src/libstore/s3-binary-cache-store.cc
@@ -77,8 +77,8 @@ static void initAWS() {
   });
 }
 
-S3Helper::S3Helper(const string& profile, const string& region,
-                   const string& scheme, const string& endpoint)
+S3Helper::S3Helper(const std::string& profile, const std::string& region,
+                   const std::string& scheme, const std::string& endpoint)
     : config(makeConfig(region, scheme, endpoint)),
       client(make_ref<Aws::S3::S3Client>(
           profile == ""
@@ -114,7 +114,8 @@ class RetryStrategy : public Aws::Client::DefaultRetryStrategy {
 };
 
 ref<Aws::Client::ClientConfiguration> S3Helper::makeConfig(
-    const string& region, const string& scheme, const string& endpoint) {
+    const std::string& region, const std::string& scheme,
+    const std::string& endpoint) {
   initAWS();
   auto res = make_ref<Aws::Client::ClientConfiguration>();
   res->region = region;