Re: oci-container-service-type: Add support for creating networks

[paul <goodoldpaul@autistici.org>]

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Hi Nicolas,

I'm working on a big refactor for the oci-container-service type at [0]. 
Basically users would be able to write something like the following in 
their own configurations:

(simple-service 'oci-monitoring
                 oci-service-type
                 (oci-configuration
                   (volumes (oci-volume-configuration  (name "my-volume")))
                   (networks (oci-network-configuration  (name "monitoring")))
                   (containers
                    (oci-container-configuration
                      (image "grafana")
                      (network "monitoring"))
                    (oci-container-configuration
                      (image "prometheus")
                      (network "monitoring")))))


It is completely compatible and with time I believe would deprecate the 
oci-container-service type. It will bring more features besides networks 
and volumes, such as support for running on top of rootless podman. It 
currently depends on [1] and [2] which bring respectively structured 
subuids and subgids support and rootless-podman as a Guix System 
service. Once they get in Guix I will upstream the new oci-service-type. 
If you'd like to collaborate on the service the development is happening 
on gocix [3] let's get in touch :)

I hope to work on [1] this weekend and to have it soon in Guix, if you 
have further comments on the implementation let me know!


Cheers,

giacomo


[0]: 
https://github.com/fishinthecalculator/guix-fork/compare/master...oci-service-type

[1]: https://issues.guix.gnu.org/72337

[2]: https://issues.guix.gnu.org/72740

[3]: 
https://github.com/fishinthecalculator/gocix/blob/main/modules/oci/services/containers.scm

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