From mboxrd@z Thu Jan  1 00:00:00 1970
From: Leo Famulari <leo@famulari.name>
Subject: Re: Broken guix pull
Date: Sun, 18 Dec 2016 16:16:13 -0500
Message-ID: <20161218211613.GA22159@jasmine>
References: <765dd961b7110b356c83fe8c654c07b1@mail.teknik.io>
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To: Dmitri Anikin <anarki@teknik.io>
Cc: help-guix@gnu.org

On Sun, Dec 18, 2016 at 08:20:57PM +0000, Dmitri Anikin wrote:
> Hello,
> 
> When I try guix pull, it fails everytime on
> 
> Found valid signature for /gnu/store/myf7zgkj7x70gy6nf47kppva612zzbgm-module-import-compiled
> From https://mirror.hydra.gnu.org/nar/myf7zgkj7x70gy6nf47kppva612zzbgm-module-import-compiled
> Downloading myf7zg...-module-import-compiled (381KiB installed)...
>  module-import-compiled 15KiB/s 00:06 | 92KiB transferred
> hash mismatch in downloaded path `/gnu/store/myf7zgkj7x70gy6nf47kppva612zzbgm-module-import-compiled': expected e7e6fcf7f72f965d9ae46c6bfb759651d1b9f17ad19928cafa5c08405d7b14b9, got 19d0c0bcdddd67c3adf21b276d5c56edc582b0cc172eac71a1d51a3f0538d791
> fetching path `/gnu/store/sk9gij7yiqka9lqymh27wzlcp7r5si2b-module-import-compiled'...
> killing process 13703
> guix pull: error: build failed: some substitutes for the outputs of derivation `/gnu/store/i2rwqg7iys5d31lqjw3qz0gb24z138n7-module-import-compiled.drv' failed (usually happens due to networking issues); try `--fallback' to build derivation from source 

Can you try running the guix-daemon with
'--substitute-urls=https://hydra.gnu.org', in case the problem is stale
data on the mirror?