Re: Guix home user-level shepherd services

[Tangonov]

Thanks Fredrik!

I really struggle with subtle details that are a few paragraphs 
deep, and so, I am embarassed.

If anyone else is reading this for reference: I should not have 
set =#:user #:t= for =make-forkexec-constructor=. The =#:user= 
keyword expects a string. My user is implicitly when left with the 
default value.

If I may say so, this has been easier to learn than systemd 
services. After many years of mostly failing to use systemd 
properly, I have not yet mastered it.

My user-level services are running :)

Fredrik Salomonsson <plattfot@posteo.net> writes:

> Hi Tangonov,
>
> Tangonov <tn@eml.cc> writes:
>
> > Ok, it seems as though I had some bash configuration issues. My 
> > "$(inline commands)" made things unhappy for some reason.
> >
> > I resolved them, and shepherd started working...except that 
> > herd 
> > was totally bound up and not responsive. I had to kill it to 
> > reconfigure.
> >
> > I assumed this is because the services were holding stuff 
> > up...so 
> > I tried a forked config:
> >
> > #+BEGIN_SRC scheme
> > (service home-shepherd-service-type
> >                  (home-shepherd-configuration
> >                   (services (list
> >                              (shepherd-service
> >                               (provision '(syncthing))
> >                               (start 
> >                               #~(make-forkexec-constructor
> >                                         "syncthing" #:user 
> >                                         #:t))
> >                               (stop #~(make-kill-destructor))
> >                               (documentation
> >                                "Synchronize folders to other 
> >                                device"))
> >                              (shepherd-service
> >                               (provision '(pantalaimon))
> >                               (start 
> >                               #~(make-forkexec-constructor
> >                                         "pantalaimon" #:user 
> >                                         #:t))
> >                               (stop #~(make-kill-destructor))
> >                               (documentation
> >                                "Crypto back-end server for 
> >                                ement.el"))))))
> > #+END_SRC
> >
> > The forked service does not seem to work :/
> >
> > #+BEGIN_QUOTE
> > λ herd start pantalaimon
> > herd: exception caught while executing 'start' on service 
> > 'pantalaimon':
> > Throw to key `match-error' with args `("match" "no matching 
> > pattern" "pantalaimon")'.
> > #+END_QUOTE
>
> The issue is most likely that make-forkexec-constructor's 
> COMMAND
> argument expects a list of strings [0]. Try and see if this 
> works:
>
> #+BEGIN_SRC scheme
> (service home-shepherd-service-type
>                  (home-shepherd-configuration
>                   (services (list
>                              (shepherd-service
>                               (provision '(syncthing))
>                               (start 
>                               #~(make-forkexec-constructor
>                                         (list "syncthing") 
>                                         #:user #:t))
>                               (stop #~(make-kill-destructor))
>                               (documentation
>                                "Synchronize folders to other 
>                                device"))
>                              (shepherd-service
>                               (provision '(pantalaimon))
>                               (start 
>                               #~(make-forkexec-constructor
>                                         (list "pantalaimon") 
>                                         #:user #:t))
>                               (stop #~(make-kill-destructor))
>                               (documentation
>                                "Crypto back-end server for 
>                                ement.el"))))))
> #+END_SRC
>
> [0] 
> https://www.gnu.org/software/shepherd/manual/html_node/Service-De_002d-and-Constructors.html#Service-De_002d-and-Constructors

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