Add cargo credentials provider via pass

users/simon/modules/default.nix

@@ -24,6 +24,7 @@
     ./neovim
     ./pass.nix
     ./programs.nix
+    ./rust.nix
     ./scripts
     ./sway
     ./tmate.nix

users/simon/modules/rust.nix

@@ -0,0 +1,16 @@
+# SPDX-FileCopyrightText: 2024 Simon Bruder <simon@sbruder.de>
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+{ lib, pkgs, ... }:
+
+{
+  home.file.".cargo/config.toml".source = (pkgs.formats.toml { }).generate "cargo-config.toml" {
+    registry = {
+      global-credential-providers = lib.singleton "cargo:token-from-stdout ${pkgs.writeShellScript "" ''
+        set -eu
+        pass cargo/registry-token/"$(base64 -w0 <<< "''${CARGO_REGISTRY_INDEX_URL}")"
+      ''}";
+    };
+  };
+}