On Sat, 03 Mar 2018 21:52:03 +0100
Clément Lassieur <clement@lassieur.org> wrote:

> Hello,
> 
> I got this error while reconfiguring, did the source change upstream?
> 
> Starting download
> of /gnu/store/4gn3ksv0hrglymrhh11474s13h4x6wcr-hdparm-9.54.tar.gz
> >From
> >http://downloads.sourceforge.net/project/hdparm/hdparm/hdparm-9.54.tar.gz...  
> following redirection to
> `https://downloads.sourceforge.net/#!/project/hdparm/hdparm/hdparm-9.54.tar.gz'... ...54.tar.gz
> 652B                   797KiB/s 00:00 [##################] 100.0%
> sha256 hash mismatch for output path
> `/gnu/store/4gn3ksv0hrglymrhh11474s13h4x6wcr-hdparm-9.54.tar.gz'
> expected: 0ghnhdj7wfw6acfyhdawpfa5n9kvkvzgi1fw6i7sghgbjx5nhyjd
> actual:   1grhp5i29v1krrn1m36n68ls6vakvbw4x60im26b7h55rkvx61vs cannot
> build derivation
> `/gnu/store/75g4xr84spyxr6i7h5w1flflzd5gx1z2-hdparm-9.54.drv': 1
> dependencies couldn't be built cannot build derivation
> `/gnu/store/wkacz7nvhc31w6iifiw02v7yqjrdm6hg-tlp-1.1.drv': 1
> dependencies couldn't be built guix system: error: build failed:
> build of `/gnu/store/wkacz7nvhc31w6iifiw02v7yqjrdm6hg-tlp-1.1.drv'
> failed
> 
> Clément

SourceForge is currently (since weeks) restructuring their site, which
unfortunately causes these kind of hiccups:

$> guix build -S --no-substitutes hdparm
$> tail -n 5 \ 
/gnu/store/mr2ksp6kf5n3mw9g446ff1ivmlh897mg-hdparm-9.53.tar.gz

 <noscript>
We're sorry -- the Sourceforge site is currently in Disaster Recovery mode, and currently requires
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</body></html>

(I'm lacking a version behind, but the result is the same)

Either wait, get substitutes from somewhere, or get the source code
from somewhere.

Björn