Hi There,

I had that same error, but I worked around it.  Basically the file is not at that site anymore.  They need to update the derivative for installing this.

I’m out at the moment, but I can post the fix in the next hour or two.

> On Nov 2, 2018, at 12:34 PM, Anthony Eslick <are0011@uah.edu> wrote:
> 
> I have been having a hard time getting guixsd installed on my x200 the past few days. I am running the command "guix system init /mnt/etc/config.scm /mnt --substitute-urls="https://berlin.guixsd.org"" and everything seems to be working but after a couple hours into the install I keep getting this message
> 
> sha256 hash mismatch for output path '/gnu/store/bjpalrv9f49d2k40p7ga0y6dwdys9w5j-bzip2-1.0.6.tar.gz'
> expected: *****************************************
> actual: *********************************************
> cannot build derivation: ***************************
> *
> *
> *
> 
> is there something in the guix system init command that I am leaving out?