Hi,
I'm working on an application which should be run as a service on GuixSD.
I followed other service definitions and add my service definition file inside
`GUIX_PACKAGE_PATH` path. but when I add this service to my system
configuration file, and perform `guix system reconfigure /etc/config.scm`,
receive following Error:
```
ice-9/eval.scm:142:16: In procedure compile-top-call:
error: foo-service: unbound variable
hint: Did you forget `(use-modules (px services foo))'?
```
could anyone help me on this issue?
my system configuration file:
```
(use-modules (gnu)
(px services foo))
...
(operating-system
...
(services (cons*
(foo-service)
(dhcp-client-service)
...
%base-services))
(name-service-switch %mdns-host-lookup-nss))
```
my service definition:
```
(define-module (px services foo)
#:use-module (gnu services)
#:use-module (gnu services shepherd)
#:use-module (px packages foo)
#:use-module (guix qexp)
#:use-module (guix records)
#:use-module (ice-9 match)
#:export (foo-service))
(define-record-type* <foo-configuration>
foo-configuration make-foo-configuration
foo-configuration?
(package foo-configuration-package
(default foo-app)))
(define foo-shepherd-service
(match-lambda
(($ <foo-configuration> package)
(list (shepherd-service
(provision '(foo-service))
(documentation "foo service")
(requirement '(user-processes))
(start #~((make-forkexec-constructor
(list
(string-append #$package "/bin/foo_app")))))
(stop #~((make-kill-destructor))))))))
(define foo-service-type
(service-type (name 'fooservice)
(extensions
(list (service-extensions shepherd-root-service-type
foo-shepherd-service)))))
(define* (foo-service #:key (package foo-app))
"Foo Service"
(service foo-service-type
(foo-configuration
(package package))))
```
