* When doing "nix-store --add-fixed" without "--recursive" via the Nix

daemon (which is an error), print a nicer error message than
  "Connection reset by peer" or "broken pipe".
* In the daemon, log errors that occur during request parameter
  processing.

src/libstore/remote-store.cc

@@ -328,7 +328,7 @@ Path RemoteStore::addToStore(const Path & _srcPath,
     openConnection();
     
     Path srcPath(absPath(_srcPath));
-    
+
     writeInt(wopAddToStore, to);
     writeString(baseNameOf(srcPath), to);
     /* backwards compatibility hack */

src/libstore/store-api.hh

@@ -151,9 +151,7 @@ public:
     
     /* Copy the contents of a path to the store and register the
        validity the resulting path.  The resulting path is returned.
-       If `fixed' is true, then the output of a fixed-output
-       derivation is pre-loaded into the Nix store.  The function
-       object `filter' can be used to exclude files (see
+       The function object `filter' can be used to exclude files (see
        libutil/archive.hh). */
     virtual Path addToStore(const Path & srcPath,
         bool recursive = true, HashType hashAlgo = htSHA256,