Re: How to put a file in /gnu/store and set its permissions

[Gary Johnson]

Nathan Dehnel <ncdehnel@gmail.com> writes:

> Thanks. I guess then I need to know how to put a file in /etc/ssh
> without putting it in the store.

To programmatically add a file to /etc, you can extend the
etc-service-type in your operating-system's services field like so:

```
(use-modules
 ((gnu services)         #:select (simple-service etc-service-type))
 ((gnu services desktop) #:select (%desktop-services))
 ((gnu system)           #:select (operating-system))
 ((guix gexp)            #:select (local-file)))

(define guixrig_host_rsa_key
  (local-file "ssh/guixrig_host_rsa_key" #:recursive? #t))

(operating-system
 ...
 (services (cons* (simple-service 'my-secret-service etc-service-type
                                  `(("ssh/guixrig_host_rsa_key" 
,guixrig_host_rsa_key)))
                  %desktop-services)))
```

Have fun and happy hacking!
  ~Gary

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