[Nix-dev] Did services become pure?

[Manuel Pages]

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>
>
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