Build composable Camino packages with explicit type and source dependencies

nix/checked-candidate.nix

@@ -34,7 +34,8 @@ let
         '';
         lock = builtins.fromJSON (builtins.readFile lockFile);
         children = map (
-          entry: load (ancestors ++ [ (sourceKey source) ]) (entry.source // { inherit (entry) kind; })
+          entry:
+          load (ancestors ++ [ (sourceKey source) ]) (entry.source // { inherit (entry) kind binding; })
         ) lock.resources;
       in
       source // { inherit directory children lock; };
@@ -50,6 +51,12 @@ let
   );
   runtimePackages = runtime.packages.${system};
   flatten = node: [ node ] ++ pkgs.lib.concatMap flatten node.children;
+  capabilityFlatten =
+    node:
+    if node.kind == "build" then
+      [ ]
+    else
+      [ node ] ++ pkgs.lib.concatMap capabilityFlatten node.children;
   nodes = builtins.attrValues (
     builtins.listToAttrs (
       map (node: {
@@ -94,6 +101,51 @@ let
       }
     '';
   contract = compile root;
+  buildDependencies =
+    node:
+    builtins.listToAttrs (
+      map (dependency: {
+        name = dependency.binding;
+        value = {
+          src = dependency.directory;
+          source = { inherit (dependency) repository commit; };
+          flake = builtins.getFlake "git+${dependency.repository}?rev=${dependency.commit}&ref=refs/tags/quixos-reachability/${dependency.commit}";
+        };
+      }) (builtins.filter (dependency: dependency.kind == "build") node.children)
+    );
+  reactContracts =
+    node:
+    let
+      interfaces = builtins.attrValues (
+        builtins.listToAttrs (
+          map (dependency: {
+            name = sourceKey dependency;
+            value = dependency;
+          }) (builtins.filter (dependency: dependency.kind == "interface") (capabilityFlatten node))
+        )
+      );
+    in
+    pkgs.lib.concatMap (
+      dependency:
+      if !builtins.pathExists (dependency.directory + "/flake.nix") then
+        [ ]
+      else
+        let
+          source = builtins.getFlake "git+${dependency.repository}?rev=${dependency.commit}&ref=refs/tags/quixos-reachability/${dependency.commit}";
+          build = source.quixosInterfaces.${system}.reactTypes or null;
+        in
+        if build == null then
+          [ ]
+        else
+          [
+            (build {
+              interface = "${compile dependency}/candidate.json";
+              generator = protocol;
+              typescript = runtimePackages.camino-replica-core.dependencies;
+              dependencies = buildDependencies dependency;
+            })
+          ]
+    ) interfaces;
   checkPackage =
     node:
     let
@@ -126,11 +178,13 @@ let
             sharedRuntime = runtimePackages.camino-shared-runtime;
             typescript = runtimePackages.camino-replica-core.dependencies;
             packageRevisionId = candidate.revision.revisionId;
+            dependencies = buildDependencies node;
           }
           // pkgs.lib.optionalAttrs (componentEntries != [ ]) {
             react = {
               sdk = runtimePackages.camino-react;
               runtime = runtimePackages.camino-react-runtime;
+              contracts = reactContracts node;
             };
           }
         else
@@ -157,7 +211,18 @@ let
     if contractOnly then
       [ ]
     else
-      map checkPackage (builtins.filter (node: node.kind == "package") nodes);
+      map checkPackage (
+        builtins.filter (node: node.kind == "package") (
+          builtins.attrValues (
+            builtins.listToAttrs (
+              map (node: {
+                name = sourceKey node;
+                value = node;
+              }) (capabilityFlatten root)
+            )
+          )
+        )
+      );
   manifest = pkgs.writeText "qx-candidate-checks.json" (builtins.toJSON checks);
   bindingOptions = pkgs.writeText "qx-typescript-options.json" (
     builtins.toJSON (