From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ricardo Wurmus <rekado@elephly.net>
Subject: Re: guix system reconfigure: Wrong type argument in position 1
 (expecting struct)
Date: Tue, 18 Jun 2019 18:36:48 +0200
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References: <877e9j9c74.fsf@roquette.mug.biscuolo.net>
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To: Giovanni Biscuolo <g@xelera.eu>
Cc: help-guix@gnu.org


Hi Giovanni,

the problem is with your =E2=80=9Cservices=E2=80=9D field:

 (services
  (append
   (list =E2=80=A6

	 (modify-services %base-services
			  (guix-service-type config =3D>
					     (guix-configuration
					      (inherit config)
					      (use-substitutes? #t)
					      (authorized-keys
					       %authorized-guix-keys)))))))

Note the indentation: modify-services returns a list and in your config
that=E2=80=99s inside of =E2=80=9Clist=E2=80=9D.  =E2=80=9Cappend=E2=80=9D =
here only has one argument: a list
that contains a list of services (among others).

Pull out the modify-services expression, so that it becomes the second
argument to =E2=80=9Cappend=E2=80=9D.

--=20
Ricardo