From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Hinsen Subject: Checking for substitutes Date: Tue, 05 Jun 2018 13:36:33 +0200 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Return-path: Received: from eggs.gnu.org ([2001:4830:134:3::10]:56703) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fQAGU-0001zu-Nz for help-guix@gnu.org; Tue, 05 Jun 2018 07:36:39 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fQAGO-000521-V7 for help-guix@gnu.org; Tue, 05 Jun 2018 07:36:38 -0400 Received: from out1-smtp.messagingengine.com ([66.111.4.25]:51453) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fQAGO-00051S-Pr for help-guix@gnu.org; Tue, 05 Jun 2018 07:36:32 -0400 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-guix-bounces+gcggh-help-guix=m.gmane.org@gnu.org Sender: "Help-Guix" To: help-guix@gnu.org Hi Guix, I wonder if there is any way to check if substitutes are available for a given set of packages (e.g. a single package with its dependencies, or a complete manifest). The context is optimizing package updates: if I know everything I need is available as a substitute, I can do an update immediately, but if big packages need to be built locally, I prefer to wait until my computer is idle. Ideally, I'd like "guix package" to have an option =E2=80=93only-substitutes that will stop if local builds are required, providing a list of the packages that must be built. Konrad.