GNU bug report logs - #46967
Connection reuse for substitutes breaks with gzip

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Ludovic Courtès <ludo <at> gnu.org>
Subject: bug#46967: closed (Re: bug#46967: Connection reuse for
 substitutes breaks with gzip)
Date: Sun, 14 Mar 2021 10:18:02 +0000

[Message part 1 (text/plain, inline)]

Your bug report

#46967: Connection reuse for substitutes breaks with gzip

which was filed against the guix package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 46967 <at> debbugs.gnu.org.

-- 
46967: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=46967
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Ludovic Courtès <ludo <at> gnu.org>
To: 46967-done <at> debbugs.gnu.org
Subject: Re: bug#46967: Connection reuse for substitutes breaks with gzip
Date: Sun, 14 Mar 2021 11:17:05 +0100

Ludovic Courtès <ludo <at> gnu.org> skribis:

> Ludovic Courtès <ludo <at> gnu.org> skribis:
>
>> I decided to take a heavy-handed solution to that problem, which is to
>> augment Guile-zlib with an interface for gzip compression/decompression
>> not restricted to file ports (‘call-with-gzip-output-port’ & co. are
>> restricted to file ports):
>>
>>   https://notabug.org/guile-zlib/guile-zlib/commit/b899ac2fecf91475da1eba7e7b24708ea8b5fb73
>>
>> That way, we can change ‘decompressed-port’ in (guix utils) to perform
>> in-process decompression for ‘gzip’, like it does for zstd and lzip.
>
> Done in a04aef2430645357d7796969d4b6453478ff8a3f!
>
> I’ll update the ‘guix’ package so people on Guix System can get the fix,
> and then we can close this bug.

Done in 8154beffd8c121e953a7c4cd75c3eebfcc073a9a, closing!

Ludo’.

[Message part 3 (message/rfc822, inline)]

From: Ludovic Courtès <ludo <at> gnu.org>
To: <bug-guix <at> gnu.org>
Subject: Connection reuse for substitutes breaks with gzip
Date: Sat, 06 Mar 2021 15:47:13 +0100

As of commit cdc688c5ee106b7ee2547e4abd74ab81d7702d3d, it seems that the
connection reuse code for substitutes breaks if you’re fetching gzip
substitutes.

I tweaked ‘narinfo-best-uri’ to always choose gzip, and here’s what I get:

--8<---------------cut here---------------start------------->8---
$ ./pre-inst-env guix build vigra inkscape eigen pt-scotch 
accepted connection from pid 20839, user ludo
69.6 MB will be downloaded:
   /gnu/store/si36xnajxjnx7v6ywd7qyhyv8ar9aymn-vigra-1.11.1
   /gnu/store/0fcjk788gj7k6gsf3zsx8j8lyw6w896b-inkscape-1.0.2
substituting /gnu/store/0fcjk788gj7k6gsf3zsx8j8lyw6w896b-inkscape-1.0.2...
downloading from https://ci.guix.gnu.org/nar/gzip/0fcjk788gj7k6gsf3zsx8j8lyw6w896b-inkscape-1.0.2 ...
 inkscape-1.0.2  38.6MiB                                                    16.8MiB/s 00:02 [##################] 100.0%

substituting /gnu/store/si36xnajxjnx7v6ywd7qyhyv8ar9aymn-vigra-1.11.1...
Backtrace:
In guix/ui.scm:
  2164:12 19 (run-guix-command _ . _)
In guix/scripts/substitute.scm:
    664:2 18 (guix-substitute . _)
In unknown file:
          17 (with-continuation-barrier #<procedure thunk ()>)
In ice-9/boot-9.scm:
  1736:10 16 (with-exception-handler _ _ #:unwind? _ #:unwind-for-type _)
In unknown file:
          15 (apply-smob/0 #<thunk 7fa67ce511c0>)
In ice-9/boot-9.scm:
  1736:10 14 (with-exception-handler _ _ #:unwind? _ #:unwind-for-type _)
  1736:10 13 (with-exception-handler _ _ #:unwind? _ #:unwind-for-type _)
  1731:15 12 (with-exception-handler #<procedure 7fa67c302390 at ice-9/boot-9.scm:1815:7 (exn)> _ #:unwind? _ # _)
In guix/scripts/substitute.scm:
   713:17 11 (_)
    414:7 10 (process-substitution _ "/gnu/store/si36xnajxjnx7v6ywd7qyhyv8ar9aymn-vigra-1.11.1" #:cache-urls _ #:acl …)
In ice-9/boot-9.scm:
  1736:10  9 (with-exception-handler _ _ #:unwind? _ #:unwind-for-type _)
In guix/scripts/substitute.scm:
    423:9  8 (_)
In ice-9/boot-9.scm:
  1731:15  7 (with-exception-handler #<procedure 7fa67c42edb0 at ice-9/boot-9.scm:1815:7 (exn)> _ #:unwind? _ # _)
  1669:16  6 (raise-exception _ #:continuable? _)
  1667:16  5 (raise-exception _ #:continuable? _)
  1669:16  4 (raise-exception _ #:continuable? _)
  1764:13  3 (_ #<&compound-exception components: (#<&error> #<&irritants irritants: (http-version "_'$Àçv\x8b\x8f7…>)
  1669:16  2 (raise-exception _ #:continuable? _)
  1667:16  1 (raise-exception _ #:continuable? _)
  1669:16  0 (raise-exception _ #:continuable? _)

ice-9/boot-9.scm:1669:16: In procedure raise-exception:
Bad http-version header component: _'$Àçv‹7$H?

Backtrace:
In ice-9/boot-9.scm:
  1736:10  4 (with-exception-handler _ _ #:unwind? _ #:unwind-for-type _)
In unknown file:
           3 (apply-smob/0 #<thunk 7fa67e9cb520>)
In ice-9/boot-9.scm:
    718:2  2 (call-with-prompt _ _ #<procedure default-prompt-handler (k proc)>)
In ice-9/eval.scm:
    619:8  1 (_ #(#(#<directory (guile-user) 7fa67e9cec80>)))
In guix/ui.scm:
  2164:12  0 (run-guix-command _ . _)

guix/ui.scm:2164:12: In procedure run-guix-command:
Bad http-version header component: _'$Àçv‹7$H?

substitution of /gnu/store/si36xnajxjnx7v6ywd7qyhyv8ar9aymn-vigra-1.11.1 failed
guix build: error: some substitutes for the outputs of derivation `/gnu/store/k32m5dcf31psvx66n95icxbvyimrjrk5-vigra-1.11.1.drv' failed (usually happens due to networking issues); try `--fallback' to build derivation from source 
$ wget -qO - https://ci.guix.gnu.org/nar/gzip/si36xnajxjnx7v6ywd7qyhyv8ar9aymn-vigra-1.11.1 | gunzip > /dev/null
$ echo $?
0--8<---------------cut here---------------end--------------->8---

Ludo’.

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