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, 7 insertions, 7 deletions

diff --git a/third_party/nix/src/libexpr/get-drvs.cc b/third_party/nix/src/libexpr/get-drvs.cc
index 6d4ad33be0..bc40ec3fef 100644
--- a/third_party/nix/src/libexpr/get-drvs.cc
+++ b/third_party/nix/src/libexpr/get-drvs.cc
@@ -44,7 +44,7 @@ DrvInfo::DrvInfo(EvalState& state, const ref<Store>& store,
   outPath = i->second.path;
 }
 
-string DrvInfo::queryName() const {
+std::string DrvInfo::queryName() const {
   if (name.empty() && (attrs != nullptr)) {
     auto i = attrs->find(state->sName);
     if (i == attrs->end()) {
@@ -55,7 +55,7 @@ string DrvInfo::queryName() const {
   return name;
 }
 
-string DrvInfo::querySystem() const {
+std::string DrvInfo::querySystem() const {
   if (system.empty() && (attrs != nullptr)) {
     auto i = attrs->find(state->sSystem);
     system = i == attrs->end()
@@ -65,7 +65,7 @@ string DrvInfo::querySystem() const {
   return system;
 }
 
-string DrvInfo::queryDrvPath() const {
+std::string DrvInfo::queryDrvPath() const {
   if (drvPath.empty() && (attrs != nullptr)) {
     Bindings::iterator i = attrs->find(state->sDrvPath);
     PathSet context;
@@ -76,7 +76,7 @@ string DrvInfo::queryDrvPath() const {
   return drvPath;
 }
 
-string DrvInfo::queryOutPath() const {
+std::string DrvInfo::queryOutPath() const {
   if (outPath.empty() && (attrs != nullptr)) {
     Bindings::iterator i = attrs->find(state->sOutPath);
     PathSet context;
@@ -149,7 +149,7 @@ DrvInfo::Outputs DrvInfo::queryOutputs(bool onlyOutputsToInstall) {
   return result;
 }
 
-string DrvInfo::queryOutputName() const {
+std::string DrvInfo::queryOutputName() const {
   if (outputName.empty() && (attrs != nullptr)) {
     Bindings::iterator i = attrs->find(state->sOutputName);
     outputName =
@@ -223,7 +223,7 @@ Value* DrvInfo::queryMeta(const std::string& name) {
   return a->second.value;
 }
 
-string DrvInfo::queryMetaString(const std::string& name) {
+std::string DrvInfo::queryMetaString(const std::string& name) {
   Value* v = queryMeta(name);
   if ((v == nullptr) || v->type != tString) {
     return "";
@@ -308,7 +308,7 @@ void DrvInfo::setMeta(const std::string& name, Value* v) {
 }
 
 /* Cache for already considered attrsets. */
-using Done = set<Bindings*>;
+using Done = std::set<Bindings*>;
 
 /* Evaluate value `v'.  If it evaluates to a set of type `derivation',
    then put information about it in `drvs' (unless it's already in `done').