From mboxrd@z Thu Jan 1 00:00:00 1970 From: Adam Pribyl Subject: Re: Some newbie questions Date: Thu, 29 Oct 2015 22:11:11 +0100 (CET) Message-ID: References: Mime-Version: 1.0 Content-Type: MULTIPART/MIXED; BOUNDARY="-1463811484-2143435251-1446153071=:7466" Return-path: Received: from eggs.gnu.org ([2001:4830:134:3::10]:50715) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZruTe-0004fq-Cy for guix-devel@gnu.org; Thu, 29 Oct 2015 17:11:19 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZruTZ-0000Tm-CR for guix-devel@gnu.org; Thu, 29 Oct 2015 17:11:18 -0400 Received: from sandbox.cz ([87.236.197.188]:39963 helo=mx.sandbox.cz) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZruTZ-0000TW-5y for guix-devel@gnu.org; Thu, 29 Oct 2015 17:11:13 -0400 Received: from localhost (localhost [127.0.0.1]) by sandbox.cz (Postfix) with ESMTP id 5F1DE3819D for ; Thu, 29 Oct 2015 22:11:11 +0100 (CET) In-Reply-To: List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org Sender: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org Cc: guix-devel This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. ---1463811484-2143435251-1446153071=:7466 Content-Type: TEXT/PLAIN; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable On Thu, 29 Oct 2015, Jan Syn=C3=A1=C4=8Dek wrote: > On Thu, Oct 29, 2015 at 2:23 PM, Thompson, David > wrote: > >> On Thu, Oct 29, 2015 at 6:08 AM, Jan Syn=C3=A1=C4=8Dek >> wrote: >>> Hello, >>> >>> I've been playing with guix a bit and I must say I really like it. I >> don't >>> understand a few things though. >>> >>> 1) How do I tell if a package I have installed had been built locally= or >>> downloaded as a substitute? >> >> You don't. You can think of substitution is an optimization >> technique, the results are indistinguishable except for that it likely >> took less time to get the substitute. It's possible to query the >> substitute server to see if it has the store item that you have, but >> that doesn't mean that your copy was retrieved from there necessarily. >> Other than that, the Guix tools will tell you at build/download time >> whether or not it is building from source or downloading a pre-built >> binary. What use-case do you have in mind? > > > Nothing really specific. I was just curious if it was possible. Now tha= t I > think about it, > I should get the same result whether building myself or installing a > substitute, > right? Right. Thats what is going on here - binary same. > I'm curious about one more thing. In /gnu/store/, there are built packa= ges, > which I understand. > Then there are derivations, -builder files, standalone statically linke= d > binaries, some patches > and also some scheme files. There's also the .links directory that cont= ains > various file formats > as well, only this time their names are only hashes. Does any > documentation/source > of information about what all those are exist? I couldn't find anything= . > The .links directory takes > over 2GiB on my machine and I wonder why. No idea. :) > Cheers, > --=20 > Jan Syn=C3=A1=C4=8Dek Adam Pribyl ---1463811484-2143435251-1446153071=:7466--