Fix

Author: Nymphium

grpc.opam

@@ -29,4 +29,5 @@ depexts: [
 ]
 
 build: ["dune" "build" "--profile" "release" "-j" jobs "-p" name]
+install: ["dune" "build" "--release" "@install"]
 

nix/default.nix

@@ -14,7 +14,7 @@ let
     in
     { inherit (sources) ocaml-protoc-plugin; }
     // (builtins.listToAttrs
-        (builtins.map (name: { inherit name; value = src'; }) localPackages) );
+        (builtins.map (name': { name = lib.strings.removeSuffix ".opam" name'; value = src'; }) localPackages) );
 
   devPackages = [ "utop" "ocaml-lsp-server" "odoc" ];