diff --git a/Models.cpp b/Models.cpp
index 0af90f6..85f0f3a 100644
--- a/Models.cpp
+++ b/Models.cpp
@@ -49,8 +49,8 @@ bool ckFaceHasAnyOtherRels(const std::vector<struct result> &results,
     auto oth = (r.x == f) ? r.y : r.x;
     all_filecodes.insert(oth.i);
     if (r.res == Relation::Equals
-    || (r.res == Relation::Included && r.x == f)
-    || (r.res == Relation::Includes && r.y == f)) {
+    || r.res == Relation::Included && r.x == f
+    || r.res == Relation::Includes && r.y == f) {
       where_exists.insert(oth.i);
       continue;
     }
@@ -102,8 +102,6 @@ std::string statements(struct result r, std::vector<struct Model> faces) {
     return st("A", B, A);
   case Relation::Intersects:
     return st("I", A, B);
-  case Relation::Irrelates:
-    return "";
   }
   return "";
 }
diff --git a/flake.lock b/flake.lock
deleted file mode 100644
index 76e7ff9..0000000
--- a/flake.lock
+++ /dev/null
@@ -1,27 +0,0 @@
-{
-  "nodes": {
-    "nixpkgs": {
-      "locked": {
-        "lastModified": 1787814960,
-        "narHash": "sha256-PYZq1qzCJXC2zGI0mH07vrZBsw6DRBAOX0jN1pPtqOQ=",
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "rev": "c27cdad491a991b11ed731760aa2ef8db0cb0410",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nixos",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "root": {
-      "inputs": {
-        "nixpkgs": "nixpkgs"
-      }
-    }
-  },
-  "root": "root",
-  "version": 7
-}
diff --git a/flake.nix b/flake.nix
deleted file mode 100644
index 222b19d..0000000
--- a/flake.nix
+++ /dev/null
@@ -1,33 +0,0 @@
-{
-  description = "Surface relation extractor for OCCT";
-  inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs?ref=nixpkgs-unstable";
-  };
-
-  outputs =
-    { self, nixpkgs }:
-    let
-      system = "x86_64-linux";
-      pkgs = nixpkgs.legacyPackages.${system};
-    in
-    {
-      devShells.${system}.default = pkgs.mkShell {
-        buildInputs = with pkgs; [
-          cmake
-          opencascade-occt
-          clang
-        ];
-      };
-      defaultPackage.x86_64-linux = pkgs.stdenv.mkDerivation {
-        pname = "OcctSurfacer";
-        version = "1.0.0";
-        src = ./.;
-        nativeBuildInputs = [
-          pkgs.cmake
-          pkgs.opencascade-occt
-        ];
-
-        cmakeFlags = [ "-DBUILD_TESTING=OFF" ];
-      };
-    };
-}