Re: Help with G-expression

[zimoun <zimon.toutoune@gmail.com>]

Hi Ludo,

Thanks for the help.


On Sat, 03 Dec 2022 at 18:43, Ludovic Courtès <ludo@gnu.org> wrote:

> Fixed in 9672db290a35f59113682a7f0c17c050a4ae2578.

Well, the main issue was that I hit this bug. :-)

I tried to see if this trivial example is covered by the test suite but
I have not found it.  Something like,

--8<---------------cut here---------------start------------->8---
(define (something)
  (with-extensions (list guile-gcrypt)
    (with-imported-modules (source-module-closure
                            '((guix build utils)
                              (guix profiles))) ;import it
      (computed-file "empty-tree"
                     #~(begin
                         ;; Put it in scope.
                         (use-modules (guix build utils))

                         ;; Happily use its 'mkdir-p' procedure.
                         (mkdir-p (string-append #$output "/a/b/c")))))))
,build (something)
--8<---------------cut here---------------end--------------->8---

where ’something’ would be a better name and ’,build’ the real function
call.  Well, maybe it could help to detect some regression. :-)  As
people tell: one bug closed, one test added. ;-)

Although it requires to talk with the daemon and I do not remember if it
is a good idea to add such test.


> It’s annoying, but I don’t see how this could be avoided.

Well, the error message is not super clear…

--8<---------------cut here---------------start------------->8---
building /gnu/store/rh1ii1cjlc0jhkz2aspxcw1mdkr7b2nf-module-import-compiled.drv...
 20% [#####################                                                                                         ]builder for `/gnu/store/rh1ii1cjlc0jhkz2aspxcw1mdkr7b2nf-module-import-compiled.drv' failed with exit code 1
build of /gnu/store/rh1ii1cjlc0jhkz2aspxcw1mdkr7b2nf-module-import-compiled.drv failed
View build log at '/var/log/guix/drvs/rh/1ii1cjlc0jhkz2aspxcw1mdkr7b2nf-module-import-compiled.drv.gz'.
cannot build derivation `/gnu/store/cznhm1wzdv60jwi7fz96cilq925j54i1-empty-tree.drv': 1 dependencies couldn't be built
While executing meta-command:
ERROR:
  1. &store-protocol-error:
      message: "build of `/gnu/store/cznhm1wzdv60jwi7fz96cilq925j54i1-empty-tree.drv' failed"
      status: 100
--8<---------------cut here---------------end--------------->8---

…but the log somehow is:

--8<---------------cut here---------------start------------->8---
[ 1/56] Loading './guix/base16.scm'...

[...]

[11/56] Loading './guix/derivations.scm'...
;;; Failed to autoload make-zlib-input-port in (zlib):
;;; no code for module (zlib)
;;; Failed to autoload make-zlib-input-port in (zlib):
;;; no code for module (zlib)
;;; Failed to autoload make-zlib-output-port in (zlib):
;;; no code for module (zlib)
;;; Failed to autoload make-zlib-output-port in (zlib):
;;; no code for module (zlib)
Backtrace:

[...]

   222:17  1 (map1 (((gcrypt hash)) ((guix profiling)) ((rnrs #)) # ?))
   3329:6  0 (resolve-interface (gcrypt hash) #:select _ #:hide _ # _ ?)

ice-9/boot-9.scm:3329:6: In procedure resolve-interface:
no code for module (gcrypt hash)
--8<---------------cut here---------------end--------------->8---

Well, it seems reasonable, IMHO, to assume that an user diving into such
internal would be able to parse this information.


Cheers,
simon