Re: ui: Move 'show-manifest-transaction' from (guix profiles).

[ludo@gnu.org (Ludovic Courtès)]

Alex Kost <alezost@gmail.com> skribis:

>    ?: 16 [primitive-load-path "guix/profiles" ...]
> In guix/profiles.scm:
>   21: 15 [#<procedure 9776070 ()>]
> In ice-9/boot-9.scm:
> 2951: 14 [define-module* (guix profiles) #:filename ...]
> 2926: 13 [resolve-imports (((guix utils)) ((guix records)) ((guix derivations)) ...)]
> 2864: 12 [resolve-interface (guix gexp) #:select ...]
> 2789: 11 [#<procedure 944b300 at ice-9/boot-9.scm:2777:4 (name #:optional autoload version #:key ensure)> # ...]
> 3065: 10 [try-module-autoload (guix gexp) #f]
> 2401: 9 [save-module-excursion #<procedure 977a630 at ice-9/boot-9.scm:3066:17 ()>]
> 3085: 8 [#<procedure 977a630 at ice-9/boot-9.scm:3066:17 ()>]
> In unknown file:
>    ?: 7 [primitive-load-path "guix/gexp" ...]
> In guix/gexp.scm:
>   19: 6 [#<procedure 97870d0 ()>]
> In ice-9/boot-9.scm:
> 2951: 5 [define-module* (guix gexp) #:filename ...]
> 2926: 4 [resolve-imports ((# # #) (#) (# # #) (#) ...)]
> 2877: 3 [resolve-interface (guix store) #:select ...]
>  768: 2 [for-each #<procedure 96f5640 at ice-9/boot-9.scm:2877:20 (bspec)> #]
> 2883: 1 [#<procedure 96f5640 at ice-9/boot-9.scm:2877:20 (bspec)> direct-store-path?]
> In unknown file:
>    ?: 0 [scm-error misc-error #f ...]
>
> ERROR: In procedure scm-error:
> ERROR: no binding `direct-store-path?' in module (guix store)

This is another circularity issue.  :-/

There’s:

  (guix store) -> (guix nar) -> (guix ui) -> (guix store) ...

This shouldn’t be a problem, except that occasional uses of #:select
trigger a bug (see <http://bugs.gnu.org/15540>.)

I’ve fiddled a bit on top of your patch, but couldn’t find any simple
fix.

However, back to the initial problem, is this a problem if the error
conditions are defined in (guix profiles), which is then imported by
(guix ui)?  This is suboptimal, but this kind of circular reference
shouldn’t cause any troubles.

HTH,
Ludo’.