GNU bug report logs - #18831
Error handling in guix import?

Previous Next

To add a comment to this bug, you must first unarchive it, by sending
a message to control AT debbugs.gnu.org, with unarchive 18831 in the body.
You can then email your comments to 18831 AT debbugs.gnu.org in the normal way.

Toggle the display of automated, internal messages from the tracker.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Ian Denhardt <ian <at> zenhack.net>
To: bug-guix <at> gnu.org
Subject: Error handling in guix import?
Date: Sat, 25 Oct 2014 05:19:17 -0400

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

So I was trying to play with the pypi importer, and (as a test) ran:

    guix import pypi schema

and got back:

    starting download of `/tmp/guix-file.5J1eOy' from `https://pypi.python.org/pypi/schema/json'...
    ;;; Failed to autoload make-session in (gnutls):
    ;;; ERROR: missing interface for module (gnutls)
    ERROR: In procedure module-lookup: Unbound variable: make-session
    failed to download "/tmp/guix-file.5J1eOy" from "https://pypi.python.org/pypi/schema/json"
    Backtrace:
    In ice-9/boot-9.scm:
     157: 13 [catch #t #<catch-closure 28ab1c0> ...]
    In unknown file:
       ?: 12 [apply-smob/1 #<catch-closure 28ab1c0>]
    In ice-9/boot-9.scm:
      63: 11 [call-with-prompt prompt0 ...]
    In ice-9/eval.scm:
     432: 10 [eval # #]
    In ice-9/boot-9.scm:
    2401: 9 [save-module-excursion #<procedure 28ca940 at ice-9/boot-9.scm:4045:3 ()>]
    4050: 8 [#<procedure 28ca940 at ice-9/boot-9.scm:4045:3 ()>]
    1724: 7 [%start-stack load-stack ...]
    1729: 6 [#<procedure 28e2ea0 ()>]
    In unknown file:
       ?: 5 [primitive-load "/home/isd/src/guix/scripts/guix"]
    In guix/ui.scm:
     776: 4 [run-guix-command import "pypi" "schema"]
    In guix/scripts/import.scm:
     109: 3 [guix-import "pypi" "schema"]
    In guix/import/pypi.scm:
     167: 2 [pypi->guix-package "schema"]
     112: 1 [latest-source-release #f]
    In unknown file:
       ?: 0 [find #<procedure 3b00920 at guix/import/pypi.scm:112:14 (release)> #f]
    
    ERROR: In procedure find:
    ERROR: In procedure find: Wrong type argument in position 2 (expecting list): #f


It's obvious from the stuff at the beginning that there's some
underlying issue to due with gnutls that's causing the url fetch to
fail. My hunch is that's just my system, However, it's perfectly
reasonable to expect it to fail under more normal circumstances -
e.g. you're not connected to a network.

I poked through the source a bit, and it looks like the importer is just
not checking for errors from (guix build download)'s url-fetch (which
returns #f on error), so when it fails you get a stack trace like the
above. We should do a proper check for download failures, and print an
intelligible error message.

-Ian

[signature.asc (application/pgp-signature, inline)]

Message #10 received at 18831-done <at> debbugs.gnu.org (full text, mbox):

From: ludo <at> gnu.org (Ludovic Courtès)
To: Ian Denhardt <ian <at> zenhack.net>
Cc: 18831-done <at> debbugs.gnu.org
Subject: Re: bug#18831: Error handling in guix import?
Date: Wed, 05 Nov 2014 18:06:20 +0100

Thanks for the report and analysis.  This is fixed in 467a3c9.

Ian Denhardt <ian <at> zenhack.net> skribis:

>     starting download of `/tmp/guix-file.5J1eOy' from `https://pypi.python.org/pypi/schema/json'...
>     ;;; Failed to autoload make-session in (gnutls):
>     ;;; ERROR: missing interface for module (gnutls)
>     ERROR: In procedure module-lookup: Unbound variable: make-session

As for this part, note that GnuTLS is actually required here, because
pypi.python.org is only accessibly over HTTPS here.  We’ll make that
clear in the manual.

Ludo’.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.