[Nix-dev] Did services become pure?

[Luca Bruno]

What about checking the permission of the /root directory. Most probably
nix doesn't have the permission to even list that directory.

On Fri, Aug 14, 2015 at 3:30 PM, Manuel Pages <amarr.industrial at gmail.com>
wrote:

> Dear Luca,
> How do you mean?
> Strace rebuild having only this expression? I'd rather do git-bissect
> to find out at which commit it stopped working. I hope, however, that
> some of core developers will shed some light on this weird behaviour...
>
> Here is the clean log of rebuilding without debug information —
>
> ```
> Fri Aug 14 12:28:46:118271388 root at thoughtflare /etc/nixos
> λ nixos-rebuild test
> building Nix...
> building the system configuration...
> these derivations will be built:
>   /nix/store/ps53z9zylm12b4prfyvm23khyv95k4zx-crontabs.drv
>   /nix/store/0bmzag2m3619bjbdpfnfdssynks3w0dg-etc.drv
>
> /nix/store/mx5fyhmbd3agfpkzsmgi956jbg2lqc7n-nixos-15.07pre67160.d921092.drv
> building path(s) ‘/nix/store/splmgb1gaxq175h949rrszxzh14nmb8w-crontabs’
> cat: /root/cron.conf: Permission denied
> builder for ‘/nix/store/ps53z9zylm12b4prfyvm23khyv95k4zx-crontabs.drv’
> failed with exit code 1
> cannot build derivation
> ‘/nix/store/0bmzag2m3619bjbdpfnfdssynks3w0dg-etc.drv’: 1 dependencies
> couldn't be built
> cannot build derivation
> ‘/nix/store/mx5fyhmbd3agfpkzsmgi956jbg2lqc7n-nixos-15.07pre67160.d921092.drv’:
> 1 dependencies couldn't be built
> error: build of
> ‘/nix/store/mx5fyhmbd3agfpkzsmgi956jbg2lqc7n-nixos-15.07pre67160.d921092.drv’
> failed
> Fri Aug 14 16:26:57:917082929 root at thoughtflare /etc/nixos
> λ ls -la /root/cron.conf
> -rw-rw-rw- 1 root root 0 Aug 13 08:37 /root/cron.conf
> ```
>
> the only reference to this file is from the expression in question. In
> fact, I
> did my best to clean up system expressions to be sure that there's no
> weird side-effects anywhere, removed all the services, then just added this
> small expression and it (reproducibly) exploded.
>
> On Fri, Aug 14, 2015 at 3:21 PM, Luca Bruno <lethalman88 at gmail.com> wrote:
>
>> Start by debugging at least what that Permission denied refers to.
>>
>> On Fri, Aug 14, 2015 at 11:31 AM, Manuel Pages <
>> amarr.industrial at gmail.com> wrote:
>>
>>> Greetings, I have a problem I don't know how to debug.
>>> I'm on unstable-small channel and face the following problem —
>>> without services that do Filesystem IO, system upgrade from
>>> the state of NixOS of a couple of months ago to actual worked.
>>> However on boxes that use postfix or something like
>>>
>>> ```
>>> { ... }:
>>> {
>>>   services.cron = {
>>>     enable = true;
>>>     cronFiles = [ "/root/cron.conf" ];
>>>   };
>>> }
>>> ```
>>>
>>> I started to get Permission denied errors, even though /root/cron.conf
>>> not only exists, but is also world-readable (analogically, master.lock in
>>> case of postfix is RW for root).
>>>
>>> Did services lately became pure? I have been using those configs for
>>> more than a year now and they used to work flawlessly :(
>>>
>>> Any feedback on at least where to look for changes / possible causes
>>> is *highly* appreciated.
>>>
>>> _______________________________________________
>>> nix-dev mailing list
>>> nix-dev at lists.science.uu.nl
>>> http://lists.science.uu.nl/mailman/listinfo/nix-dev
>>>
>>>
>>
>>
>> --
>> NixOS Linux <http://nixos.org>
>>
>
>


-- 
NixOS Linux <http://nixos.org>
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