Trouble installing bind using home-configuration.scm/config.scm

[Lee Thompson]

I'm having trouble installing the `bind' package declaratively.  Running
`guix show bind' returns the bind package, but when I add `(gnu packages
dns)' to my home-configuration.scm and the bind package to `packages'
like so I run into an exception during reconfiguration:
> (use-modules (gnu home)
>              (gnu home services)
>              (gnu packages)
>              …
>              (gnu packages dns))
> 
> (home-environment
>   (packages (list …
>                   bind
>                   …)))
>   (services …)

After running `guix home reconfigure
~/.config/guix-config/home-configuration.scm':
> …
> In gnu/home/services.scm:
>    167:37  8 (_ #<store-connection 256.100 7fd2ba4d7a50>)
> In guix/profiles.scm:
>     439:4  7 (packages->manifest _)
> In srfi/srfi-1.scm:
>    586:29  6 (map1 (#<package htop@3.3.0 gnu/packages/admin.scm:8…> …))
>    586:17  5 (map1 (#<procedure bind (_ _ #:optional _ . _)> #<pa…> …))
> In guix/inferior.scm:
>     560:2  4 (loop #<procedure bind (_ _ #:optional _ . _)> "out" #<…>)
>     540:4  3 (inferior-package-input-field #<procedure bind (_ _ #:…> …)
>    484:18  2 (inferior-package-field #<procedure bind (_ _ #:option…> …)
> In ice-9/boot-9.scm:
>   1685:16  1 (raise-exception _ #:continuable? _)
>   1685:16  0 (raise-exception _ #:continuable? _)
> 
> ice-9/boot-9.scm:1685:16: In procedure raise-exception:
> In procedure struct-vtable: Wrong type argument in position 1 (expecting 
> struct): #<procedure bind (_ _ #:optional _ . _)>

It looks pretty obvious that this is having some interaction with the
standard Guile `bind' procedure.  Is this intended behaviour?  I can
imagine using `specification->package' could get around this but I
wanted to hear some other opinions.

Also while looking into this I found this section of the info manual
that talks about an `isc-bind' package I've been unable to get Guix to
find; is this a former name of the current `bind' package?  Relevant
info section:
> Globally-Visible Packages
> -------------------------
> 
> The ‘packages’ field lists packages that will be globally visible on the
> system, for all user accounts—i.e., in every user’s ‘PATH’ environment
> variable—in addition to the per-user profiles (*note Invoking guix
> package::).  The ‘%base-packages’ variable provides all the tools one
> would expect for basic user and administrator tasks—including the GNU
> Core Utilities, the GNU Networking Utilities, the ‘mg’ lightweight text
> editor, ‘find’, ‘grep’, etc.  The example above adds GNU Screen to
> those, taken from the ‘(gnu packages screen)’ module (*note Package
> Modules::).  The ‘(list package output)’ syntax can be used to add a
> specific output of a package:
> 
>      (use-modules (gnu packages))
>      (use-modules (gnu packages dns))
> 
>      (operating-system
>        ;; ...
>        (packages (cons (list isc-bind "utils")
>                        %base-packages)))