args

default.nix

@@ -1,20 +1,20 @@
+{ pkgs ? import <nixpkgs> { }
+, callPackage ? pkgs.callPackage
+, stdenv ? pkgs.stdenv
+, name ? "brownpaper"
+, src ? (builtins.filterSource (path: type: baseNameOf path != "target") ./.)
+}:
 let
-  pkgs = import <nixpkgs> { };
-  name = "brownpaper";
-  src = ./.;
   crate2nix_tools = import "${builtins.fetchTarball { url = "https://github.com/kolloch/crate2nix/archive/0.8.0.tar.gz"; sha256 = "17mmf5sqn0fmpqrf52icq92nf1sy5yacwx9vafk43piaq433ba56"; }}/tools.nix" { };
-  overrides = pkgs.defaultCrateOverrides // {
-    libloading = attrs: {
-      buildInputs = with pkgs; [ pkg-config ];
-    };
-    brownpaper = attrs: {
-      buildInputs = with pkgs; [ gmp ];
-    };
+  overrides = pkgs.defaultCrateOverrides // rec {
     nettle-sys = attrs: with pkgs; {
-      buildInputs = [ pkg-config nettle clang ];
+      nativeBuildInputs = [ clang nettle pkg-config ];
       LIBCLANG_PATH = "${clang.cc.lib}/lib";
     };
+    sequoia-openpgp = attrs: with pkgs; {
+      nativeBuildInputs = [ clang gmp pkg-config ];
+      LIBCLANG_PATH = "${clang.cc.lib}/lib";
+    };
+    brownpaper = sequoia-openpgp; # requires gmp as well
   };
-  project = pkgs.callPackage (crate2nix_tools.generatedCargoNix { inherit name; inherit src; }) { defaultCrateOverrides = overrides; };
-in
-project.rootCrate.build
+in callPackage (crate2nix_tools.generatedCargoNix { inherit name src; }) { inherit pkgs stdenv; defaultCrateOverrides = overrides; }