drop nix-unit from flake-inputs

pkgs/nix-unit/default.nix

@@ -0,0 +1,45 @@
+{ stdenv
+, lib
+, nixVersions
+, fetchFromGitHub
+, nlohmann_json
+, boost
+, bear
+, meson
+, pkg-config
+, ninja
+, cmake
+, clang-tools
+}:
+
+stdenv.mkDerivation {
+  pname = "nix-unit";
+  version = "0.1";
+  src = fetchFromGitHub {
+    owner = "adisbladis";
+    repo = "nix-unit";
+    rev = "a9d6f33e50d4dcd9cfc0c92253340437bbae282b";
+    sha256 = "sha256-PCXQAQt8+i2pkUym9P1JY4JGoeZJLzzxWBhprHDdItM=";
+  };
+  buildInputs = [
+    nlohmann_json
+    nixVersions.unstable
+    boost
+  ];
+  nativeBuildInputs = [
+    bear
+    meson
+    pkg-config
+    ninja
+    # nlohmann_json can be only discovered via cmake files
+    cmake
+  ] ++ (lib.optional stdenv.cc.isClang [ bear clang-tools ]);
+
+  meta = {
+    description = "Nix unit test runner";
+    homepage = "https://github.com/adisbladis/nix-unit";
+    license = lib.licenses.gpl3;
+    maintainers = with lib.maintainers; [ adisbladis ];
+    platforms = lib.platforms.unix;
+  };
+}

pkgs/nix-unit/flake-module.nix

@@ -0,0 +1,5 @@
+{
+  perSystem = { pkgs, ... }: {
+    packages.nix-unit = pkgs.callPackage ./default.nix { };
+  };
+}