Some notational convenience for formatting strings

We can now write

  throw Error("file '%s' not found", path);

instead of

  throw Error(format("file '%s' not found") % path);

and similarly

  printError("file '%s' not found", path);

instead of

  printMsg(lvlError, format("file '%s' not found") % path);

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libutil/args.hh b/src/libutil/args.hh
index 6aa08aacac..ac12f8be63 100644
--- a/src/libutil/args.hh
+++ b/src/libutil/args.hh
@@ -8,7 +8,7 @@
 
 namespace nix {
 
-MakeError(UsageError, nix::Error);
+MakeError(UsageError, Error);
 
 enum HashType : char;