Re: home-files-service-type file permissions

[Andrew Tropin <andrew@trop.in>]

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On 2021-11-08 06:44, phodina wrote:

> Hi Andrew,
>
> On Wednesday, November 3rd, 2021 at 8:24 AM, Andrew Tropin <andrew@trop.in> wrote:
>
>> On 2021-11-02 11:31, phodina@protonmail.com wrote:
>>
>> > Hi Andrew,
>> >
>> > Thanks for the development of Guix home. I've recently switch to it from my dotfiles.
>> >
>> > However, there is one thing that I do not know how to set.
>> >
>> > When using the service home-files-service-type I encountered a situation where I'm copying a script:
>> >
>> > (simple-service 'dotfiles
>> >
>> > home-files-service-type
>> >
>> > (list
>> >
>> > ...
>> >
>> > `("config/sway/wallpaper-change.sh" ,(local-file "config/sway/wallpaper-change.sh"))))
>> >
>> > However, after guix home reconfigure the file has only read flags set not execute. Even though the original file has execute flags.
>> >
>> > Is the home-files-service-type the correct service to use?
>> >
>> > Petr
>>
>> If there is no specific home service for your use case, which generates
>>
>> all necessary configs and executables for you the answer is probably
>>
>> yes, using home-files-service-type directly is a way to go.
>>
>> > Or do I have to patch it in order to keep the permissions?
>>
>> AFAIK, local-file, mixed-text-file create non-executable files in the
>>
>> store by design.
>
> Thanks, I've now looked more at the implementation and spend time understanding the differences between local-file, plain-file, computed-file, program-file.
>>
>> If you want to make an executable file you have at least a few options:
>>
>> 0. You can use recursive? flag to keep permissions.
>>
>> (local-file "blabla" #:recursive? #t)
>>
>
> Nice and simple solution.
>
>> The quote from documentation:
>>
>> > if file designates a flat file and recursive? is true, its contents
>> >
>> > are added, and its permission bits are kept.
>>
>> http://guix.gnu.org/en/manual/devel/en/guix.html#index-local_002dfile
>>
>> 1.  Use program-file
>>
>>     http://guix.gnu.org/en/manual/devel/en/guix.html#index-program_002dfile
>>
>>     For example I do it for generating screenshot scripts:
>>
>>     https://git.sr.ht/~abcdw/rde/tree/master/item/rde/features/wm.scm#L188
>
> Thanks for this example! This is what I've been looking for.
>
>> 2.  Use computed-file, which will call chmod with apropriate arguments
>>
>>     inside gexp. Take a look at "empty-tree" example in the manual, you can
>>
>>     create a file and set apropriate permissions in the same way.
>>
>>     --
>
> This is also super useful as it allows to do what's needed to the file.
>
>>
>>     Best regards,
>>
>>     Andrew Tropin

Sure, glad to help :)


-- 
Best regards,
Andrew Tropin

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