style(tvix): Replace remaining typedefs with using statements r/1702

Change (mostly) created via:

  fd . -e hh -e cc | parallel clang-tidy -p ~/builds/nix --fix "'--checks=-*,modernize-use-using'"

Change-Id: I90ad6e64a5399f2005dfb9956074ec51c2c78cea
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1830
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>

1 files changed, 2 insertions, 2 deletions

diff --git a/third_party/nix/src/libstore/builtins/buildenv.cc b/third_party/nix/src/libstore/builtins/buildenv.cc
index 7ef7e2c25a59..0d1c59e6b5b7 100644
--- a/third_party/nix/src/libstore/builtins/buildenv.cc
+++ b/third_party/nix/src/libstore/builtins/buildenv.cc
@@ -120,7 +120,7 @@ static void createLinks(const Path& srcDir, const Path& dstDir, int priority) {
   }
 }
 
-typedef std::set<Path> FileProp;
+using FileProp = std::set<Path>;
 
 static FileProp done;
 static FileProp postponed = FileProp{};
@@ -158,7 +158,7 @@ struct Package {
       : path{path}, active{active}, priority{priority} {}
 };
 
-typedef std::vector<Package> Packages;
+using Packages = std::vector<Package>;
 
 void builtinBuildenv(const BasicDerivation& drv) {
   auto getAttr = [&](const std::string& name) {