Received: (at 41602) by debbugs.gnu.org; 24 Feb 2025 19:14:01 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Feb 24 14:14:01 2025 Received: from localhost ([127.0.0.1]:42665 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tmdtx-0002Bl-Cd for submit <at> debbugs.gnu.org; Mon, 24 Feb 2025 14:14:01 -0500 Received: from mail-40133.protonmail.ch ([185.70.40.133]:27711) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <morgan.arnold@HIDDEN>) id 1tmdtu-0002BO-VC for 41602 <at> debbugs.gnu.org; Mon, 24 Feb 2025 14:13:59 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=proton.me; s=protonmail; t=1740424432; x=1740683632; bh=ktR6hWDKb5HWc2hDpFQd/F9kInkC0QLhdw7ouxUHtVY=; h=Date:To:From:Subject:Message-ID:Feedback-ID:From:To:Cc:Date: Subject:Reply-To:Feedback-ID:Message-ID:BIMI-Selector: List-Unsubscribe:List-Unsubscribe-Post; b=nC5TY0V5zkgIDtK24r5n27ugbMkTL1vwrG1FZt7u5Odg7Fm3Vz+/j52Z3cZV1gG6V 6DbxNUKhbBQBbN/D1p9pnn/F0YD7U6702eHYI3vhiX8o/KeTNDRzIrCGz5SxRmEeQ6 RkBF+NxQkMyis3XtglplRBGol49QLvnBFzvl72YDGiQJBZiWuhLPVpg9pW9vKchozt w+lvRvaXLt2LN8sGcVs6KjsLa7bDXfj4EN+ebJmafoV0m6qVSB8Q6xweKPtDxjaS9p mRdq+My58aAkCzlg7QFLRXUvHc3VAro+ANioTtWEfgyctWE/gFwKIneEpzb4gTVYDs NRDSI3UHuoHpw== Date: Mon, 24 Feb 2025 19:13:48 +0000 To: "41602 <at> debbugs.gnu.org" <41602 <at> debbugs.gnu.org> From: Morgan Arnold <morgan.arnold@HIDDEN> Subject: texlive is actually substitutable Message-ID: <gy8O6t_G2lOYgafb4lLIX7zS7_P2SzwecZopSC-UYLoKexr54c61z-i9vnH6jUVfzrqTO4YveNeC8jUWua0RkJsywl2xGN8ARYpSlPiYGD0=@proton.me> Feedback-ID: 45510636:user:proton X-Pm-Message-ID: 097271ca34e5063ea7fe5753630453c810c944f2 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 41602 X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Hey Ludo, Maxim, Sorry about the double-email. I messed up the first patch by mistake. The f= ix actually ends up being quite simple! I didn't know about `valid-derivers= `, so thanks to Ludo for that. This patch should fix the issue by restricting substitutions on the server = side instead of the client side. The bug in the daemon may remain, but this= should at least ensure correct functionality. Besides, it seems that we ar= e in agreement that substitutability isn't something that should really be = enforced by the client anyway. Best, Morgan
bug-guix@HIDDEN:bug#41602; Package guix.
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Date: Mon, 24 Feb 2025 19:10:03 +0000
To: 41602 <at> debbugs.gnu.org
From: Morgan Arnold <morgan.arnold@HIDDEN>
Subject: [PATCH v2] Prevent publication of non-substitutable derivation outputs
Message-ID: <bc5ddaa3c82e818bc947a173ca3a64fa8d3dd4b6.1740424114.git.morgan.arnold@HIDDEN>
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This commit prevents Guix substitute servers from distributing binaries whi=
ch are marked non-substitutable. This prevents substitute servers from acci=
dentally committing copyright violations by distributing binaries which are=
non-substitutable for copyright reasons.
Change-Id: Iaca81f5bdb430a12a3ad41e9b83e0bcc535af607
---
guix/scripts/publish.scm | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/guix/scripts/publish.scm b/guix/scripts/publish.scm
index a000c559a7..f736cf3068 100644
--- a/guix/scripts/publish.scm
+++ b/guix/scripts/publish.scm
@@ -61,6 +61,7 @@ (define-module (guix scripts publish)
#:use-module (guix cache)
#:use-module (guix ui)
#:use-module (guix scripts)
+ #:use-module (guix derivations)
#:use-module ((guix utils)
#:select (with-atomic-file-output compressed-file?))
#:use-module ((guix build utils)
@@ -696,11 +697,15 @@ (define* (bake-narinfo+nar cache item
(define* (render-nar store request store-item
#:key (compression %no-compression))
"Render archive of the store path corresponding to STORE-ITEM."
- (let ((store-path (string-append %store-directory "/" store-item)))
+ (let* ((store-path (string-append %store-directory "/" store-item))
+ (substitutable-store-item? (every substitutable-derivation?
+ (map read-derivation-from-file
+ (valid-derivers store
+ store-path=
)))))
;; The ISO-8859-1 charset *must* be used otherwise HTTP clients will
;; interpret the byte stream as UTF-8 and arbitrarily change invalid b=
yte
;; sequences.
- (if (valid-path? store store-path)
+ (if ((and substitutable-store-item? valid-path?) store store-path)
(values `((content-type . (application/x-nix-archive
(charset . "ISO-8859-1")))
(x-nar-compression . ,compression))
base-commit: 23b068c036223e70bdea9d7d579850a1cffc02a7
--=20
2.47.1
bug-guix@HIDDEN:bug#41602; Package guix.
Full text available.
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Date: Mon, 24 Feb 2025 19:03:07 +0000
To: 41602 <at> debbugs.gnu.org
From: Morgan Arnold <morgan.arnold@HIDDEN>
Subject: [PATCH v1] Prevent publication of non-substitutable derivation outputs
Message-ID: <ac57764fcf349604aa9520cb793d3e869c4de242.1740423677.git.morgan.arnold@HIDDEN>
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This commit prevents Guix substitute servers from distributing binaries whi=
ch are marked non-substitutable. This prevents substitute servers from acci=
dentally committing copyright violations by distributing binaries which are=
non-substitutable for copyright reasons.
Change-Id: Iaca81f5bdb430a12a3ad41e9b83e0bcc535af607
---
guix/scripts/publish.scm | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/guix/scripts/publish.scm b/guix/scripts/publish.scm
index a000c559a7..fc8b007d36 100644
--- a/guix/scripts/publish.scm
+++ b/guix/scripts/publish.scm
@@ -61,6 +61,7 @@ (define-module (guix scripts publish)
#:use-module (guix cache)
#:use-module (guix ui)
#:use-module (guix scripts)
+ #:use-module (guix derivations)
#:use-module ((guix utils)
#:select (with-atomic-file-output compressed-file?))
#:use-module ((guix build utils)
@@ -696,11 +697,14 @@ (define* (bake-narinfo+nar cache item
(define* (render-nar store request store-item
#:key (compression %no-compression))
"Render archive of the store path corresponding to STORE-ITEM."
- (let ((store-path (string-append %store-directory "/" store-item)))
+ (let* ((store-path (string-append %store-directory "/" store-item))
+ (substitutable-store-item? (every substitutable-derivation?
+ (map read-derivation-from-file
+ (valid-derivers store-path=
)))))
;; The ISO-8859-1 charset *must* be used otherwise HTTP clients will
;; interpret the byte stream as UTF-8 and arbitrarily change invalid b=
yte
;; sequences.
- (if (valid-path? store store-path)
+ (if ((and substitutable-store-item? valid-path?) store store-path)
(values `((content-type . (application/x-nix-archive
(charset . "ISO-8859-1")))
(x-nar-compression . ,compression))
base-commit: 23b068c036223e70bdea9d7d579850a1cffc02a7
--=20
2.47.1
bug-guix@HIDDEN:bug#41602; Package guix.
Full text available.Received: (at 41602) by debbugs.gnu.org; 24 Feb 2025 17:32:31 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Feb 24 12:32:31 2025 Received: from localhost ([127.0.0.1]:42421 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tmcJi-0005Wf-Ot for submit <at> debbugs.gnu.org; Mon, 24 Feb 2025 12:32:31 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:60728) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <ludo@HIDDEN>) id 1tmcJf-0005WN-Bi for 41602 <at> debbugs.gnu.org; Mon, 24 Feb 2025 12:32:27 -0500 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <ludo@HIDDEN>) id 1tmcJX-0007ZA-Bm; Mon, 24 Feb 2025 12:32:20 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-Version:Date:References:In-Reply-To:Subject:To: From; bh=4hil5+oAXXHBrm9xzTjREqOJRI0nKUCowhJrQJXwB4s=; b=hOS4jtRqhp/9XiUOZ7gy cHTF0bIghHP1NkT2CHKQ76kB1JGvthLZV/W2PfxLKqleEE5wztTfQX0LUyS52AqN4HOcJQrkPxxm+ cV5jCBbwNK4CaEiCFFF62uuLAIe3f443GwrIe6D9BFpF/xrDDrNOx3Lu8IJx4fzgezZNKqMn/7TVw 3+lVJ1Jr7au4P/LzC+MmpPOGtF5UTT9sbeil2qBlvVQ9YqaOlCP/tvxTPnveKCuqPGfHXUTJfcHmX wfjhTH0KI3sTvgh4hQIiJpA93EdhopoL+bth7dHKsRCGvs2aTc1YdaeLxKHMvAqYyuCx1rz7Ha5El b+3SOqfd0NO/Bw==; From: =?utf-8?Q?Ludovic_Court=C3=A8s?= <ludo@HIDDEN> To: Morgan Arnold <morgan.arnold@HIDDEN> Subject: Re: bug#41602: texlive is actually substitutable In-Reply-To: <EU_AVZ76UKFsrLyYSjpm16v1Ivms-4Vxp6PFqmjSP95tJ3xHa1ol4wyf7BukG0ELgazJOEG7_FO_pm44dRAxAFA3T4GYLkjUqNKBOF8JuxA=@proton.me> (Morgan Arnold's message of "Mon, 24 Feb 2025 15:17:39 +0000") References: <878sha3h7n.fsf@HIDDEN> <20200529180411.GB3754@HIDDEN> <87sgfhtt1f.fsf@HIDDEN> <874jcjw621.fsf@HIDDEN> <874j0rxmjs.fsf_-_@HIDDEN> <87zfiiwrra.fsf@HIDDEN> <87cyfba719.fsf@HIDDEN> <EU_AVZ76UKFsrLyYSjpm16v1Ivms-4Vxp6PFqmjSP95tJ3xHa1ol4wyf7BukG0ELgazJOEG7_FO_pm44dRAxAFA3T4GYLkjUqNKBOF8JuxA=@proton.me> Date: Mon, 24 Feb 2025 18:32:16 +0100 Message-ID: <87tt8js0yn.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 41602 Cc: 41602 <at> debbugs.gnu.org, Maxim Cournoyer <maxim.cournoyer@HIDDEN>, Leo Famulari <leo@HIDDEN> X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) Hi! I would rely on #:substitutable? instead of relying on a new #:distributable? flag that the daemon doesn=E2=80=99t know about anyway. With that in mind, =E2=80=98guix publish=E2=80=99 in =E2=80=98render-nar=E2= =80=99 could have an extra check in addition to =E2=80=98valid-path?=E2=80=99: =E2=80=98substitutable-= path?=E2=80=99. One way to implement =E2=80=98substitutable-path?=E2=80=99 is by (1) gettin= g a =E2=80=9Cderiver=E2=80=9D of the store item with =E2=80=98valid-derivers=E2=80=99, and (2) checking w= hether the returned derivation (if any) passes =E2=80=98substitutable-derivation?=E2= =80=99. One downside is that this extra check could be a bit costly, but it=E2=80= =99s a cost one would only pay when not using =E2=80=98--cache=E2=80=99. Does that make sense? HTH, Ludo=E2=80=99.
bug-guix@HIDDEN:bug#41602; Package guix.
Full text available.Received: (at 41602) by debbugs.gnu.org; 24 Feb 2025 15:17:53 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Feb 24 10:17:53 2025 Received: from localhost ([127.0.0.1]:41956 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tmaDR-0003dd-2V for submit <at> debbugs.gnu.org; Mon, 24 Feb 2025 10:17:53 -0500 Received: from mail-10630.protonmail.ch ([79.135.106.30]:12493) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <morgan.arnold@HIDDEN>) id 1tmaDO-0003dK-TL for 41602 <at> debbugs.gnu.org; Mon, 24 Feb 2025 10:17:52 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=proton.me; s=o6ko2uc3xre2tk2wah2nlspfra.protonmail; t=1740410263; x=1740669463; bh=nsvG61qirUNlsvf+NDr0XSNXDgdtKncaOUEWi+TYeBo=; h=Date:To:From:Cc:Subject:Message-ID:In-Reply-To:References: Feedback-ID:From:To:Cc:Date:Subject:Reply-To:Feedback-ID: Message-ID:BIMI-Selector:List-Unsubscribe:List-Unsubscribe-Post; b=TWDtAL1Q8UWr78iyhRCfRePXRDyw/CxShkbl7eoZX8R0qm3r8VlX62ZBYkySLeElK YxUhr2x9MUwyYi1xDqxFLsZ13LFAsmeHQdk8M9Ay8IJ4cuTy2zPLuZXm6Ch8Ms7O1F yZYpS9HlShh78rhxivTXRbhmMZXlCKJXFQjYrpHv3uB/QWMJNcmZfz6DXx4LRZ5E8c xmYdVdkdomTI/5XHm/7ycbuhK2vNHuGQt1ksodpffW0KTMTgsIQBxZCKupXyrM8aKc tLxJtaF+uzVG0nQHAarrun1zNLikkhVM3PgshTxeGFVK18UvQUVfgr4qZ9b2zXoocA KPCeiksooXsCw== Date: Mon, 24 Feb 2025 15:17:39 +0000 To: =?utf-8?Q?Ludovic_Court=C3=A8s?= <ludo@HIDDEN> From: Morgan Arnold <morgan.arnold@HIDDEN> Subject: Re: bug#41602: texlive is actually substitutable Message-ID: <EU_AVZ76UKFsrLyYSjpm16v1Ivms-4Vxp6PFqmjSP95tJ3xHa1ol4wyf7BukG0ELgazJOEG7_FO_pm44dRAxAFA3T4GYLkjUqNKBOF8JuxA=@proton.me> In-Reply-To: <87cyfba719.fsf@HIDDEN> References: <878sha3h7n.fsf@HIDDEN> <20200529180411.GB3754@HIDDEN> <87sgfhtt1f.fsf@HIDDEN> <874jcjw621.fsf@HIDDEN> <874j0rxmjs.fsf_-_@HIDDEN> <87zfiiwrra.fsf@HIDDEN> <87cyfba719.fsf@HIDDEN> Feedback-ID: 45510636:user:proton X-Pm-Message-ID: 80b604d270039717d9247f9c14d8cdd09c4b8809 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 41602 Cc: 41602 <at> debbugs.gnu.org, Maxim Cournoyer <maxim.cournoyer@HIDDEN>, Leo Famulari <leo@HIDDEN> X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Hi Maxim, Ludo, I did a bit of work on this, and I think that there might be a problem with= limiting the distribution of derivation outputs. The problem is with encod= ing that a derivation's outputs are non-distributable. Because `#:distribut= able?` should presumably be an argument to `derivation`, and because `guix = publish` does not have access to the underlying derivation object, it seems= necessary to store distributability information somehow, like is done with= "allowSubstitutes" currently. The problem, then, is that when `guix publis= h` manages a request, what it has to work with is the path of the output be= ing requested *not the derivation from which it was built*. I could be wron= g, but I assume that there is no way to compute, from an output path, the p= ath of the derivation which produced it. It then seems impossible to effectively prevent distribution! I don't see a= sane way to attach metadata to every single object in the store (all of wh= ich may, to the best of my understanding, be published), and even if we inc= lude information about distributability in the derivation file, there is no= way for `guix publish` to locate that derivation file, since it is supplie= d with the path of the derivation output, not the derivation which produced= it. I would appreciate thoughts on this, but I am not sure if I see how `#:dist= ributable?` is a workable solution. I agree that enforcing non-distribution= on the client side is inelegant, but I don't see a way to enforce it serve= r-side. Best, Morgan
bug-guix@HIDDEN:bug#41602; Package guix.
Full text available.Received: (at 41602) by debbugs.gnu.org; 21 Feb 2025 11:09:34 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Feb 21 06:09:34 2025 Received: from localhost ([127.0.0.1]:54929 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1tlQuT-000486-8I for submit <at> debbugs.gnu.org; Fri, 21 Feb 2025 06:09:33 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:51726) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <ludo@HIDDEN>) id 1tlQuQ-000475-Gq for 41602 <at> debbugs.gnu.org; Fri, 21 Feb 2025 06:09:31 -0500 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <ludo@HIDDEN>) id 1tlQuL-0005I1-0C; Fri, 21 Feb 2025 06:09:25 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-Version:Date:References:In-Reply-To:Subject:To: From; bh=hpDTYPOvW95Zujb/lrEOyhJVCSxJV4uONiDndYHCmks=; b=IwCoEdAnyIv+6+8YWV6s F7nXsPCUdXSlWGaLkrF5MiDPc8Q0UEQN+EU63HrYm22COts9Q1eitoqFJiaN9QSSKLUXJOLrlb6Ns O6FWAj+pQZ/5NVemN/6VGAwJXiAoeHABt6LMx3tdcxUqTULJ2QbBFkLWe/nu/YoQZI7cnHpwC8OlM A/R1T1z87b8ypp6CvMvZStmpmxADFARFrg/+sStg9dm8aTDV6dbIWDSvhg5NQq23lMp+bVnhGjmTi FqE90KQvU1i5qfLabLCbMIfMGLneWoBfPwpu6hpLhWqSO/8dLIEup50XWn2yMV8JbFPpC7KCaD6fn 4WnipkfQR98acw==; From: =?utf-8?Q?Ludovic_Court=C3=A8s?= <ludo@HIDDEN> To: Maxim Cournoyer <maxim.cournoyer@HIDDEN> Subject: Re: bug#41602: texlive is actually substitutable In-Reply-To: <87zfiiwrra.fsf@HIDDEN> (Maxim Cournoyer's message of "Wed, 19 Feb 2025 12:14:01 +0900") References: <878sha3h7n.fsf@HIDDEN> <20200529180411.GB3754@HIDDEN> <87sgfhtt1f.fsf@HIDDEN> <874jcjw621.fsf@HIDDEN> <874j0rxmjs.fsf_-_@HIDDEN> <87zfiiwrra.fsf@HIDDEN> X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: Tridi 3 =?utf-8?Q?Vent=C3=B4se?= an 233 de la =?utf-8?Q?R=C3=A9volution=2C?= jour du Violier X-PGP-Key-ID: 0x090B11993D9AEBB5 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 3CE4 6455 8A84 FDC6 9DB4 0CFB 090B 1199 3D9A EBB5 X-OS: x86_64-pc-linux-gnu Date: Fri, 21 Feb 2025 12:09:22 +0100 Message-ID: <87cyfba719.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 41602 Cc: Morgan Arnold <morgan.arnold@HIDDEN>, 41602 <at> debbugs.gnu.org, Leo Famulari <leo@HIDDEN> X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) Hi, Maxim Cournoyer <maxim.cournoyer@HIDDEN> skribis: > But perhaps it is futile that the *client* should enforce this. If we > do not want to distribute something in binary form, we shouldn't bake a > .nar for it and make it available in the first place, as pointed by > Emily in #nix-dev:nixos.org (on their Matrix server). Agreed, probably something to fix in =E2=80=98guix publish=E2=80=99 & co. Thanks for addressing this longstanding issue! Ludo=E2=80=99.
bug-guix@HIDDEN:bug#41602; Package guix.
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From: Maxim Cournoyer <maxim.cournoyer@HIDDEN>
To: Ludovic =?utf-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
Subject: Re: bug#41602: texlive is actually substitutable
In-Reply-To: <874j0rxmjs.fsf_-_@HIDDEN> (Maxim Cournoyer's message of "Wed,
19 Feb 2025 01:08:55 +0900")
References: <878sha3h7n.fsf@HIDDEN> <20200529180411.GB3754@HIDDEN>
<87sgfhtt1f.fsf@HIDDEN> <874jcjw621.fsf@HIDDEN>
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Hello,
Maxim Cournoyer <maxim.cournoyer@HIDDEN> writes:
[...]
> I haven't investigated where in this execution path the
> substitutesAllowed procedure is called, if at all, but this is what I
> will try to understand next.
This gets called, in the case of texlive, only for the texlive .drv
itself, not for its referenced .drvs, which the daemon attempts to
substitute without checking for their allowSubstitutes variable first,
as this gdb screen grab attempts to show:
--8<---------------cut here---------------start------------->8---
2: *goal = {<std::enable_shared_from_this<nix::Goal>> = {_M_weak_this = std::weak_ptr<nix::Goal> (use count 2, weak count 3) = {get() = 0x5e29a0}}, _vptr.Goal = 0x4c75e0 <vtable for nix::SubstitutionGoal+16>, worker = @0x7fffffff85c0, waitees = std::set with 0 elements, waiters = std::__cxx11::list = {[0] = std::weak_ptr<nix::Goal> (use count 1, weak count 5) = {get() = 0x5b08f0}}, nrFailed = 0, nrNoSubstituters = 0, nrIncompleteClosure = 0, name = "substitution of `/gnu/store/b5sn5ha961hab37r7vl5p2n6sf46x582-texlivetexmf-20240312'", exitCode = nix::Goal::ecBusy}
(gdb) where
#0 nix::Worker::run (this=0x7fffffff85c0, _topGoals=std::set with 1 element = {...}) at nix/libstore/build.cc:3448
#1 0x00000000004659c9 in nix::LocalStore::buildPaths (this=0x55b4d0, drvPaths=std::set with 1 element = {...}, buildMode=nix::bmNormal) at nix/libstore/build.cc:3642
#2 0x000000000040ad6c in performOp (trusted=false, clientVersion=356, from=..., to=..., op=9) at nix/nix-daemon/nix-daemon.cc:481
#3 0x000000000040e01b in processConnection (trusted=false, userId=1000) at nix/nix-daemon/nix-daemon.cc:841
#4 0x000000000040e754 in operator() (__closure=0x524f50) at nix/nix-daemon/nix-daemon.cc:1003
#5 0x0000000000410fda in std::__invoke_impl<void, acceptConnection(int)::<lambda()>&>(std::__invoke_other, struct {...} &) (__f=...) at /gnu/store/d50i890p2lg97kvc131p62wy52krapbd-profile/include/c++/bits/invoke.h:61
#6 0x000000000040f718 in std::__invoke_r<void, acceptConnection(int)::<lambda()>&>(struct {...} &) (__fn=...) at /gnu/store/d50i890p2lg97kvc131p62wy52krapbd-profile/include/c++/bits/invoke.h:154
#7 0x000000000040f5db in std::_Function_handler<void(), acceptConnection(int)::<lambda()> >::_M_invoke(const std::_Any_data &) (__functor=...) at /gnu/store/d50i890p2lg97kvc131p62wy52krapbd-profile/include/c++/bits/std_function.h:290
#8 0x0000000000441f00 in std::function<void()>::operator() (this=0x7fffffffaf10) at /gnu/store/d50i890p2lg97kvc131p62wy52krapbd-profile/include/c++/bits/std_function.h:590
#9 0x00000000004ab2ef in nix::startProcess (fun=..., dieWithParent=false, errorPrefix="unexpected build daemon error: ", runExitHandlers=true) at nix/libutil/util.cc:1025
#10 0x000000000040ed6b in acceptConnection (fdSocket=3) at nix/nix-daemon/nix-daemon.cc:977
#11 0x000000000040f40e in daemonLoop (sockets=std::vector of length 1, capacity 1 = {...}) at nix/nix-daemon/nix-daemon.cc:1055
#12 0x000000000040f4bd in run (sockets=std::vector of length 1, capacity 1 = {...}) at nix/nix-daemon/nix-daemon.cc:1064
#13 0x000000000041a262 in main (argc=12, argv=0x7fffffffc208) at nix/nix-daemon/guix-daemon.cc:569
--8<---------------cut here---------------end--------------->8---
But perhaps it is futile that the *client* should enforce this. If we
do not want to distribute something in binary form, we shouldn't bake a
.nar for it and make it available in the first place, as pointed by
Emily in #nix-dev:nixos.org (on their Matrix server).
I'll investigate this idea next.
--
Thanks,
Maxim
bug-guix@HIDDEN:bug#41602; Package guix.
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From: Maxim Cournoyer <maxim.cournoyer@HIDDEN>
To: Ludovic =?utf-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
Subject: Re: bug#41602: texlive is actually substitutable
In-Reply-To: <874jcjw621.fsf@HIDDEN> (Maxim Cournoyer's message of "Tue, 02
Apr 2024 22:09:26 -0400")
References: <878sha3h7n.fsf@HIDDEN> <20200529180411.GB3754@HIDDEN>
<87sgfhtt1f.fsf@HIDDEN> <874jcjw621.fsf@HIDDEN>
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Cc: Morgan Arnold <morgan.arnold@HIDDEN>, 41602 <at> debbugs.gnu.org,
Leo Famulari <leo@HIDDEN>
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Hi,
Maxim Cournoyer <maxim.cournoyer@HIDDEN> writes:
> Hello,
>
> Ludovic Court=C3=A8s <ludo@HIDDEN> writes:
>
>> Hi,
>>
>> Leo Famulari <leo@HIDDEN> skribis:
>>
>>> On Fri, May 29, 2020 at 05:15:40PM +0200, Ludovic Court=C3=A8s wrote:
>>>> The info suggests it won=E2=80=99t be substituted, but it=E2=80=99s ev=
entually
>>>> substituted. I wonder why, because the .drv has:
>>>>=20
>>>> ("allowSubstitutes","0")
>>>>=20
>>>> and the daemon has:
>>>>=20
>>>> bool substitutesAllowed(const Derivation & drv)
>>>> {
>>>> return get(drv.env, "allowSubstitutes", "1") =3D=3D "1";
>>>> }
>>>>=20
>>>> and:
>>>>=20
>>>> if (settings.useSubstitutes && substitutesAllowed(drv))
>>>> foreach (PathSet::iterator, i, invalidOutputs)
>>>> addWaitee(worker.makeSubstitutionGoal(*i, buildMode =3D=3D b=
mRepair));
>>>>=20
>>>> Thoughts?
It's odd, when using --dry-run, it seems the expected situation would
happen:
--8<---------------cut here---------------start------------->8---
$ guix build --no-grafts -n texlive
guix build --no-grafts -n texlive
La d=C3=A9rivation suivante serait compil=C3=A9e :
/gnu/store/v10c5wzji81pkwq2fhj123gw3d8il0ic-texlivetexmf-20240312.drv
4=E2=80=AF270,0 Mo seraient t=C3=A9l=C3=A9charg=C3=A9s :
/gnu/store/pb6z5d5fx6s13cjzmvlw7dykpafp9x97-texlive-20240312-texmf.tar.xz
/gnu/store/0gkx9q1kyys8cis93cw9qhlzyx584dr6-texlive-20240312
--8<---------------cut here---------------end--------------->8---
Only the private texlivetexmf is marked as non-substitutable, so the
above looks correct (though we see the intention of preserving bandwidth
wouldn't be achieved, given the source is as large as the final
package).
When removing the --dry-run, what happens though is that the output of
the texlivetexmf package, which is marked as non-substitutable, is download=
ed:
--8<---------------cut here---------------start------------->8---
$ guix build --no-grafts texlive
La d=C3=A9rivation suivante sera compil=C3=A9e :
/gnu/store/v10c5wzji81pkwq2fhj123gw3d8il0ic-texlivetexmf-20240312.drv
4=E2=80=AF270,0 Mo seront t=C3=A9l=C3=A9charg=C3=A9s=E2=80=AF:
/gnu/store/pb6z5d5fx6s13cjzmvlw7dykpafp9x97-texlive-20240312-texmf.tar.xz
/gnu/store/0gkx9q1kyys8cis93cw9qhlzyx584dr6-texlive-20240312
substitution de /gnu/store/b5sn5ha961hab37r7vl5p2n6sf46x582-texlivetexmf-20=
240312...
t=C3=A9l=C3=A9chargement depuis https://bordeaux.guix.gnu.org/nar/lzip/b5sn=
5ha961hab37r7vl5p2n6sf46x582-texlivetexmf-20240312...
texlivetexmf-20240312 3.95GiB 2.8MiB/=
s 00:06 =E2=96=95 =E2=96=8F 0.4% C-c C-c^C
--8<---------------cut here---------------end--------------->8---
I've had some success as stopping in the daemon right before the downlod
starts, with this sequence:
Start the locally built guix-daemon in gdb, with a command like:
--8<---------------cut here---------------start------------->8---
sudo -E ./pre-inst-env gdb --args ./guix-daemon --debug --build-users-group=
=3Dguixbuild --max-silent-time 3600 --timeout 86400 --log-compression none =
--discover=3Dno --substitute-urls=3D'https://bordeaux.guix.gnu.org https://=
ci.guix.gnu.org'
--8<---------------cut here---------------end--------------->8---
Then, to be able to reach the point in the execution where the downloads
are about to start, we need to break in the first fork (but not the 2nd,
which is the guile substituter), like follows at the GDB prompt:
--8<---------------cut here---------------start------------->8---
set follow-fork-mode child
# To break inside the first child process
break LocalStore::querySubstitutablePathInfos
run
## from a terminal, 'guix build texlive' to hit breakpoint
delete 1
# avoid entering the guile substituter fork
set follow-fork-mode parent=20=20
break LocalStore::buildPaths
continue
-> should break in
Thread 2.1 "guix-daemon" hit Breakpoint 2.1, nix::LocalStore::buildPaths
(this=3D0x51f4d0, drvPaths=3Dstd::set with 1 element =3D {...},
buildMode=3Dnix::bmNormal) at nix/libstore/build.cc:3627
Thread 2.1 "guix-daemon" hit Breakpoint 2.1, nix::LocalStore::buildPaths (t=
his=3D0x51f4d0, drvPaths=3Dstd::set with 1 element =3D {...}, buildMode=3Dn=
ix::bmNormal) at nix/libstore/build.cc:3627
3627 {
(gdb) bt
#0 nix::LocalStore::buildPaths (this=3D0x51f4d0, drvPaths=3Dstd::set with =
1 element =3D {...}, buildMode=3Dnix::bmNormal) at nix/libstore/build.cc:36=
27
#1 0x00000000004253b6 in performOp (from=3D..., to=3D..., op=3D<optimized =
out>, clientVersion=3D356, trusted=3Dfalse) at nix/nix-daemon/nix-daemon.cc=
:481
#2 processConnection (trusted=3D<optimized out>, userId=3D<optimized out>)=
at nix/nix-daemon/nix-daemon.cc:841
#3 0x000000000042805f in operator() (__closure=3D0x4e8f50) at nix/nix-daem=
on/nix-daemon.cc:1003
#4 0x00000000004280ac in std::__invoke_impl<void, acceptConnection(int)::<=
lambda()>&> (__f=3D...) at /gnu/store/hzsq64kmn9bmnkhhywav83miaaapl4m1-prof=
ile/include/c++/bits/invoke.h:61
#5 std::__invoke_r<void, acceptConnection(int)::<lambda()>&> (__fn=3D...) =
at /gnu/store/hzsq64kmn9bmnkhhywav83miaaapl4m1-profile/include/c++/bits/inv=
oke.h:154
#6 std::_Function_handler<void(), acceptConnection(int)::<lambda()> >::_M_=
invoke(const std::_Any_data &) (__functor=3D...) at /gnu/store/hzsq64kmn9bm=
nkhhywav83miaaapl4m1-profile/include/c++/bits/std_function.h:290
#7 0x0000000000495dbb in std::function<void()>::operator() (this=3D0x7ffff=
fffbb00) at /gnu/store/hzsq64kmn9bmnkhhywav83miaaapl4m1-profile/include/c++=
/bits/std_function.h:590
#8 nix::startProcess (fun=3D..., dieWithParent=3DdieWithParent@entry=3Dfal=
se, errorPrefix=3D"unexpected build daemon error: ", runExitHandlers=3DrunE=
xitHandlers@entry=3Dtrue) at nix/libutil/util.cc:1025
#9 0x00000000004237c2 in acceptConnection (fdSocket=3D<optimized out>) at =
nix/nix-daemon/nix-daemon.cc:977
#10 daemonLoop (sockets=3Dstd::vector of length 1, capacity 1 =3D {...}) at=
nix/nix-daemon/nix-daemon.cc:1055
#11 0x00000000004241b9 in run (sockets=3Dstd::vector of length 1, capacity =
1 =3D {...}) at nix/nix-daemon/nix-daemon.cc:1064
#12 0x0000000000420635 in main (argc=3D<optimized out>, argv=3D<optimized o=
ut>) at nix/nix-daemon/guix-daemon.cc:569
--8<---------------cut here---------------end--------------->8---
I haven't investigated where in this execution path the
substitutesAllowed procedure is called, if at all, but this is what I
will try to understand next.
--=20
Thanks,
Maxim
bug-guix@HIDDEN:bug#41602; Package guix.
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From: Maxim Cournoyer <maxim.cournoyer@HIDDEN>
To: Ludovic =?utf-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
Subject: Re: bug#41602: texlive-texmf is actually subtitutable
In-Reply-To: <87sgfhtt1f.fsf@HIDDEN> ("Ludovic =?utf-8?Q?Court=C3=A8s=22'?=
=?utf-8?Q?s?= message of "Sat, 30 May 2020 16:07:56 +0200")
References: <878sha3h7n.fsf@HIDDEN> <20200529180411.GB3754@HIDDEN>
<87sgfhtt1f.fsf@HIDDEN>
Date: Tue, 02 Apr 2024 22:09:26 -0400
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Hello,
Ludovic Court=C3=A8s <ludo@HIDDEN> writes:
> Hi,
>
> Leo Famulari <leo@HIDDEN> skribis:
>
>> On Fri, May 29, 2020 at 05:15:40PM +0200, Ludovic Court=C3=A8s wrote:
>>> The info suggests it won=E2=80=99t be substituted, but it=E2=80=99s eve=
ntually
>>> substituted. I wonder why, because the .drv has:
>>>=20
>>> ("allowSubstitutes","0")
>>>=20
>>> and the daemon has:
>>>=20
>>> bool substitutesAllowed(const Derivation & drv)
>>> {
>>> return get(drv.env, "allowSubstitutes", "1") =3D=3D "1";
>>> }
>>>=20
>>> and:
>>>=20
>>> if (settings.useSubstitutes && substitutesAllowed(drv))
>>> foreach (PathSet::iterator, i, invalidOutputs)
>>> addWaitee(worker.makeSubstitutionGoal(*i, buildMode =3D=3D bm=
Repair));
>>>=20
>>> Thoughts?
>>
>> I wonder if the content-addressed fallbacks take a different code path
>> that doesn't respect "allowSubstitutes"?
>
> It does, but this texlive-texmf.drv is not a fixed-output derivation.
I just verified; this still happens:
--8<---------------cut here---------------start------------->8---
$ guix build texlive -n
substitute: mise =C3=A0 jour des substituts depuis =C2=AB=C2=A0https://ci.g=
uix.gnu.org=C2=A0=C2=BB... 100.0 %
La d=C3=A9rivation suivante serait compil=C3=A9e :
/gnu/store/ym96pipknrh6khzc3ws8ychiy6224y61-texlivetexmf-20230313.drv
3=E2=80=AF880,6 Mo seraient t=C3=A9l=C3=A9charg=C3=A9s :
/gnu/store/rzczwmmkvpkahy0mgpahav0yx37ci61b-texlive-20230313-texmf.tar.xz
/gnu/store/bcc5071mvprhp4yj1jimlhyyi499d2ba-texlivebin-20230313
/gnu/store/bd4mzanvv7q2plm2b6zld8cz3fy0x34a-texlive-20230313
maxim@hurd ~/src/guix [env]$ guix build /gnu/store/bd4mzanvv7q2plm2b6zld8cz=
3fy0x34a-texlive-20230313
substitute: mise =C3=A0 jour des substituts depuis =C2=AB=C2=A0https://ci.g=
uix.gnu.org=C2=A0=C2=BB... 100.0 %
substitution de /gnu/store/bcc5071mvprhp4yj1jimlhyyi499d2ba-texlivebin-2023=
0313...
t=C3=A9l=C3=A9chargement depuis https://ci.guix.gnu.org/nar/lzip/bcc5071mvp=
rhp4yj1jimlhyyi499d2ba-texlivebin-20230313...
texlivebin-20230313 13.5MiB 527KiB/s 00=
:26 =E2=96=95=E2=96=88=E2=96=88=E2=96=88=E2=96=88=E2=96=88=E2=96=88=E2=96=
=88=E2=96=88=E2=96=88=E2=96=88=E2=96=88=E2=96=88=E2=96=88=E2=96=88=E2=96=88=
=E2=96=88=E2=96=88=E2=96=88=E2=96=8F 100.0%
substitution de /gnu/store/4hr3i6p7g2miwhy9gn64mxp1haix36dq-texlivetexmf-20=
230313...
t=C3=A9l=C3=A9chargement depuis https://ci.guix.gnu.org/nar/lzip/4hr3i6p7g2=
miwhy9gn64mxp1haix36dq-texlivetexmf-20230313...
texlivetexmf-20230313 3.63GiB 360KiB/s 00=
:17 =E2=96=95 =E2=96=8F 0.2%^C
--8<---------------cut here---------------end--------------->8---
--=20
Thanks,
Maxim
bug-guix@HIDDEN:bug#41602; Package guix.
Full text available.Maxim Cournoyer <maxim.cournoyer@HIDDEN>
to control <at> debbugs.gnu.org.
Full text available.Leo Famulari <leo@HIDDEN>
to control <at> debbugs.gnu.org.
Full text available.
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From: =?utf-8?Q?Ludovic_Court=C3=A8s?= <ludo@HIDDEN>
To: Leo Famulari <leo@HIDDEN>
Subject: Re: bug#41602: texlive-texmf is actually subtitutable
References: <878sha3h7n.fsf@HIDDEN> <20200529180411.GB3754@HIDDEN>
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Hi,
Leo Famulari <leo@HIDDEN> skribis:
> On Fri, May 29, 2020 at 05:15:40PM +0200, Ludovic Court=C3=A8s wrote:
>> The info suggests it won=E2=80=99t be substituted, but it=E2=80=99s even=
tually
>> substituted. I wonder why, because the .drv has:
>>=20
>> ("allowSubstitutes","0")
>>=20
>> and the daemon has:
>>=20
>> bool substitutesAllowed(const Derivation & drv)
>> {
>> return get(drv.env, "allowSubstitutes", "1") =3D=3D "1";
>> }
>>=20
>> and:
>>=20
>> if (settings.useSubstitutes && substitutesAllowed(drv))
>> foreach (PathSet::iterator, i, invalidOutputs)
>> addWaitee(worker.makeSubstitutionGoal(*i, buildMode =3D=3D bmR=
epair));
>>=20
>> Thoughts?
>
> I wonder if the content-addressed fallbacks take a different code path
> that doesn't respect "allowSubstitutes"?
It does, but this texlive-texmf.drv is not a fixed-output derivation.
Ludo=E2=80=99.
bug-guix@HIDDEN:bug#41602; Package guix.
Full text available.
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Date: Sat, 30 May 2020 06:06:09 +0200
From: Bengt Richter <bokr@HIDDEN>
To: Ludovic =?utf-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
Subject: Re: bug#41602: texlive-texmf is actually subtitutable
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On +2020-05-29 17:15:40 +0200, Ludovic Courtès wrote:
> Strangely, ‘texlive-texmf’ (the big one) is substitutable:
>
> --8<---------------cut here---------------start------------->8---
> $ guix describe
> Generacio 145 May 25 2020 00:37:58 (nuna)
> guix 9744cc7
> repository URL: https://git.savannah.gnu.org/git/guix.git
> branch: master
> commit: 9744cc7b4636fafb772c94adb8f05961b5b39f16
> $ guix environment --ad-hoc texlive -- texdoc biblatex
> 2.6 MB will be downloaded:
> /gnu/store/7ji4l3szj68b0r5w10bvvdx1vy6nhz5p-subversion-1.10.6
> downloading from https://ci.guix.gnu.org/nar/lzip/7ji4l3szj68b0r5w10bvvdx1vy6nhz5p-subversion-1.10.6 ...
> subversion-1.10.6 2.5MiB 7.2MiB/s 00:00 [##################] 100.0%
>
> La jena derivo estos konstruata:
> /gnu/store/55yx02hr0dz47px1aj0j14xll3bsrmml-texlive-texmf-20190410.drv
> 2,845.8 MB will be downloaded:
> /gnu/store/nm6w84c9zj3yiylal3dk1sqzxq11sjzw-texlive-20190410-texmf.tar.xz
> /gnu/store/xpkl70g3bls935h1zdlq7sn2j6rccp3k-texlive-20190410
> downloading from https://ci.guix.gnu.org/nar/lzip/z4xvgiliw5baf1pr4z03c7n2hw3bm5x5-texlive-texmf-20190410 ...
> texlive-texmf-20190410 2.61GiB
> --8<---------------cut here---------------end--------------->8---
>
> The info suggests it won’t be substituted, but it’s eventually
> substituted. I wonder why, because the .drv has:
>
> ("allowSubstitutes","0")
>
> and the daemon has:
>
> bool substitutesAllowed(const Derivation & drv)
> {
> return get(drv.env, "allowSubstitutes", "1") == "1";
> }
>
> and:
>
> if (settings.useSubstitutes && substitutesAllowed(drv))
> foreach (PathSet::iterator, i, invalidOutputs)
> addWaitee(worker.makeSubstitutionGoal(*i, buildMode == bmRepair));
>
> Thoughts?
This is the kind of "wonder why" that makes me wonder about trojan horse bug fixes
as described in [1], which is a really interesting and scary read, especially since [1]
could very conceivably be an example of what it itself is talking about (though they
don't sound malicious, so I can hope trusting okular to display it was not giving
them a pdf or image parser to exploit with malice).
Anyway, please note that the "pdf" file starts with these lines:
--8<---------------cut here---------------start------------->8---
# I'm a shell script :-) so please make me executable!
# No shebang but I work equally well with Bash, Dash and Zsh
# The script embeds link-grammar, a x86-64 ELF so it requires to be run on a x86-64 linux system
--8<---------------cut here---------------end--------------->8---
What looks like the beginning of a normal pdf file starts at line 30 counting from 1 as first line.
okular will display the original as if it were pdf (bug??) though "file" just sees it as "data."
Trim off the first 29 lines and file sees it as pdf, and pdfinfo will find its way too.
Idk, you might want at least to cut out the first 29 lines before looking at it with e.g. okular,
(which I trustingly used to open the file): note that okular got past the 29-line script part, (which
is a bit promiscuous for my taste), and displayed the pdf.
It was really interesting, esp the sections around
--8<---------------cut here---------------start------------->8---
3
Deniable Backdoors Using Compiler Bugs
by Scott Bauer, Pascal Cuoq, and John Regehr
--8<---------------cut here---------------end--------------->8---
Maybe you can view it in a sandbox :) But don't blame me if you don't.
YOU WERE WARNED.
So read it -- and wonder what might come with a mysterious substitute ;-P
[1] https://www.alchemistowl.org/pocorgtfo/pocorgtfo08.pdf
>
> Ludo’.
>
>
>
--
Regards,
Bengt Richter
bug-guix@HIDDEN:bug#41602; Package guix.
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Date: Fri, 29 May 2020 14:04:11 -0400
From: Leo Famulari <leo@HIDDEN>
To: Ludovic =?iso-8859-1?Q?Court=E8s?= <ludo@HIDDEN>
Subject: Re: bug#41602: texlive-texmf is actually subtitutable
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On Fri, May 29, 2020 at 05:15:40PM +0200, Ludovic Courtès wrote:
> The info suggests it won’t be substituted, but it’s eventually
> substituted. I wonder why, because the .drv has:
>
> ("allowSubstitutes","0")
>
> and the daemon has:
>
> bool substitutesAllowed(const Derivation & drv)
> {
> return get(drv.env, "allowSubstitutes", "1") == "1";
> }
>
> and:
>
> if (settings.useSubstitutes && substitutesAllowed(drv))
> foreach (PathSet::iterator, i, invalidOutputs)
> addWaitee(worker.makeSubstitutionGoal(*i, buildMode == bmRepair));
>
> Thoughts?
I wonder if the content-addressed fallbacks take a different code path
that doesn't respect "allowSubstitutes"?
bug-guix@HIDDEN:bug#41602; Package guix.
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From: =?utf-8?Q?Ludovic_Court=C3=A8s?= <ludo@HIDDEN>
To: bug-guix@HIDDEN
Subject: texlive-texmf is actually subtitutable
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Strangely, =E2=80=98texlive-texmf=E2=80=99 (the big one) is substitutable:
--8<---------------cut here---------------start------------->8---
$ guix describe
Generacio 145 May 25 2020 00:37:58 (nuna)
guix 9744cc7
repository URL: https://git.savannah.gnu.org/git/guix.git
branch: master
commit: 9744cc7b4636fafb772c94adb8f05961b5b39f16
$ guix environment --ad-hoc texlive -- texdoc biblatex
2.6 MB will be downloaded:
/gnu/store/7ji4l3szj68b0r5w10bvvdx1vy6nhz5p-subversion-1.10.6
downloading from https://ci.guix.gnu.org/nar/lzip/7ji4l3szj68b0r5w10bvvdx1v=
y6nhz5p-subversion-1.10.6 ...
subversion-1.10.6 2.5MiB =
=
7.2MiB/s 00:00 [##################] 100.0%
La jena derivo estos konstruata:
/gnu/store/55yx02hr0dz47px1aj0j14xll3bsrmml-texlive-texmf-20190410.drv
2,845.8 MB will be downloaded:
/gnu/store/nm6w84c9zj3yiylal3dk1sqzxq11sjzw-texlive-20190410-texmf.tar.xz
/gnu/store/xpkl70g3bls935h1zdlq7sn2j6rccp3k-texlive-20190410
downloading from https://ci.guix.gnu.org/nar/lzip/z4xvgiliw5baf1pr4z03c7n2h=
w3bm5x5-texlive-texmf-20190410 ...
texlive-texmf-20190410 2.61GiB
--8<---------------cut here---------------end--------------->8---
The info suggests it won=E2=80=99t be substituted, but it=E2=80=99s eventua=
lly
substituted. I wonder why, because the .drv has:
("allowSubstitutes","0")
and the daemon has:
bool substitutesAllowed(const Derivation & drv)
{
return get(drv.env, "allowSubstitutes", "1") =3D=3D "1";
}
and:
if (settings.useSubstitutes && substitutesAllowed(drv))
foreach (PathSet::iterator, i, invalidOutputs)
addWaitee(worker.makeSubstitutionGoal(*i, buildMode =3D=3D bmRepa=
ir));
Thoughts?
Ludo=E2=80=99.
Ludovic Courtès <ludo@HIDDEN>:bug-guix@HIDDEN.
Full text available.bug-guix@HIDDEN:bug#41602; Package guix.
Full text available.
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