bug#27652: guix pull --url fails to build - guix pull works

bug#27652: guix pull --url fails to build - guix pull works

[Joshua Sierles]

I tried 'guix pull' and it worked fine. Then, tried using a git commit
from master's tip, which should be the same contents. This link contains
the outputs for both attempts.

https://gist.github.com/jsierles/0177424733612947d61af8533084841e

-- 
  Joshua Sierles
  joshua@joshua.si

bug#27652: guix pull --url fails to build - guix pull works

[Leo Famulari]

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On Tue, Jul 11, 2017 at 06:04:47PM +0200, Joshua Sierles wrote:
> I tried 'guix pull' and it worked fine. Then, tried using a git commit
> from master's tip, which should be the same contents. This link contains
> the outputs for both attempts.
> 
> https://gist.github.com/jsierles/0177424733612947d61af8533084841e

For everyone's reference, the failing command was:

$ guix pull --url=https://git.savannah.gnu.org/cgit/guix.git/snapshot/d5ff67f411a6a91f2cfa589d185fbc025046f1db.tar.gz

It failed like this:

------
loading...	 25.4% of 607 filesrandom seed for tests: 1499787464
loading...	 99.8% of 607 files
compiling...	 88.8% of 607 files
compiling...	 89.3% of 607 filesice-9/threads.scm:289:22: In procedure loop:
ice-9/threads.scm:289:22: Syntax error:
guix/scripts.scm:116:4: >>=: >>= (bind) used outside of 'with-monad' in form (>>= (package->derivation package #:graft? (and (not dry-run?) grafting?)) (lambda (t-24216c5d7b7f7de-597) (mlet* %store-monad () (let ((derivation t-24216c5d7b7f7de-597)) (mbegin %store-monad (maybe-build (list derivation) #:use-substitutes? use-substitutes? #:dry-run? dry-run?) (return (show-derivation-outputs derivation)))))))
------

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bug#27652: multi-core server could be the cause

[Joshua Sierles]

As Ludo mentioned on IRC, this issue could be caused by parallel
compilation on our 64-core server. At first it seemed related to using
the '--url' option, but I just was able to reproduce this problem using
only 'guix pull'. I'll look into how I can reduce the number of cores
used for compilation and report back.

If this is the case, would this still be considered a bug?

-- 
  Joshua Sierles
  joshua@joshua.si

bug#27652: multi-core server could be the cause

[Ludovic Courtès]

Joshua Sierles <joshua@joshua.si> skribis:

> As Ludo mentioned on IRC, this issue could be caused by parallel
> compilation on our 64-core server. At first it seemed related to using
> the '--url' option, but I just was able to reproduce this problem using
> only 'guix pull'. I'll look into how I can reduce the number of cores
> used for compilation and report back.
>
> If this is the case, would this still be considered a bug?

Marius reported a similar issue, which suggests it may indeed have to do
with parallel compilation on many-core machines:

  https://lists.gnu.org/archive/html/guix-devel/2017-08/msg00206.html

(That’s a bug, of course.)

Ludo’.