Subject: Failed substitution yields incomplete store item

From: David Thompson <[email-masked]>
Date: Sun, 04 Jan 2015 18:51:48 -0500

While working on 'guix publish', I managed to mess up the store.  :(

Here's the first substitution that failed due to an invalid eof marker
for some reason:

  dave@labrys ~$ sudo _NIX_OPTIONS="substitute-urls=http://192.168.1.157:8080" guix substitute-binary --substitute /gnu/store/iw3jn6a1avv78pp5v2cv42vyh0d8zi0g-guile-toxcore-0.1-6a9fbe0 /tmp/guile-toxcore
  
  found valid signature for '/gnu/store/iw3jn6a1avv78pp5v2cv42vyh0d8zi0g-guile-toxcore-0.1-6a9fbe0', from 'http://192.168.1.157:8080/nar/iw3jn6a1avv78pp5v2cv42vyh0d8zi0g-guile-toxcore-0.1-6a9fbe0'
  sha256:xl35awxl6kgl5b2eum7kfgqlnap7a7itczpyxptf4kq25pasafka
  downloading `/gnu/store/iw3jn6a1avv78pp5v2cv42vyh0d8zi0g-guile-toxcore-0.1-6a9fbe0' (0.1 MiB installed)...
  http://192.168.1.157/.../iw3jn6a1avv78pp5v2cv42vyh0d8zi0g-guile-toxcore-0.1-6a9fbe0     100.0% of 127.5 KiBguix substitute-binary: error: invalid nar end-of-file marker

When the same command is run again, there's a new error:

  dave@labrys ~$ sudo _NIX_OPTIONS="substitute-urls=http://192.168.1.157:8080" guix substitute-binary --substitute /gnu/store/iw3jn6a1avv78pp5v2cv42vyh0d8zi0g-guile-toxcore-0.1-6a9fbe0 /tmp/guile-toxcore
  
  found valid signature for '/gnu/store/iw3jn6a1avv78pp5v2cv42vyh0d8zi0g-guile-toxcore-0.1-6a9fbe0', from 'http://192.168.1.157:8080/nar/iw3jn6a1avv78pp5v2cv42vyh0d8zi0g-guile-toxcore-0.1-6a9fbe0'
  sha256:xl35awxl6kgl5b2eum7kfgqlnap7a7itczpyxptf4kq25pasafka
  downloading `/gnu/store/iw3jn6a1avv78pp5v2cv42vyh0d8zi0g-guile-toxcore-0.1-6a9fbe0' (0.1 MiB installed)...
  http://192.168.1.157/.../iw3jn6a1avv78pp5v2cv42vyh0d8zi0g-guile-toxcore-0.1-6a9fbe0       6.3% of 127.5 KiBguix substitute-binary: error: mkdir: File exists

Any idea what could be going wrong?

-- 
David Thompson
Web Developer - Free Software Foundation - http://fsf.org
GPG Key: 0FF1D807
Support the FSF: https://fsf.org/donate