etc: Add rust-team manifest.

Change-Id: Ie43bd4a88d35270dcac7baaabeafbcc3a755db1e

etc/teams/rust/rust-manifest.scm

@@ -0,0 +1,34 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2024 Efraim Flashner <efraim@flashner.co.il>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; This file returns a manifest of packages built using the cargo-build-system.
+;;; It is used to assist continuous integration of the rust-team branch.
+
+(use-modules (guix packages)
+             (guix profiles)
+             (guix build-system))
+
+(manifest
+  (map package->manifest-entry
+       (fold-packages
+         (lambda (package lst)
+           (if (eq? (build-system-name (package-build-system package))
+                    (quote cargo))
+             (cons package lst)
+             lst))
+         (list))))