Don't use `store-api.hh` in `worker-protocol.hh`

Using abstract types like can help cut down on compilation time, both
from scratch, and especially incremental builds during development. The
idea is that `worker-protocol.hh` can declare all the (de)serializers, but
only again abstract types; when code needs to use some (de)serializers, it can
include headers just for the data types it needs to (de)serialize.

`store-api.hh` in particular is a bit of a sledgehammer, and the data
types we want to serialize have their own headers.

1 files changed, 9 insertions, 1 deletions

diff --git a/src/libstore/worker-protocol.hh b/src/libstore/worker-protocol.hh
index 34b2fc17b..fa7202ae6 100644
--- a/src/libstore/worker-protocol.hh
+++ b/src/libstore/worker-protocol.hh
@@ -1,7 +1,6 @@
 #pragma once
 ///@file
 
-#include "store-api.hh"
 #include "serialise.hh"
 
 namespace nix {
@@ -79,6 +78,15 @@ typedef enum {
 class Store;
 struct Source;
 
+// items being serialized
+struct DerivedPath;
+struct DrvOutput;
+struct Realisation;
+struct BuildResult;
+struct KeyedBuildResult;
+enum TrustedFlag : bool;
+
+
 /**
  * Used to guide overloading
  *