How to run tutorial code in GNU Guix environment?

[ZelphirKaltstahl]

I am trying to make the first examples of the tutorial run and am hitting a wall.

I have the following:

channels.scm file:

(list (channel
        (name 'guix)
        (url "https://git.savannah.gnu.org/git/guix.git")
        (branch "master")
        (commit
          "83abdc8371d90b6d4591a69fae5585a2a99c1627")
        (introduction
          (make-channel-introduction
            "9edb3f66fd807b096b48283debdcddccfea34bad"
            (openpgp-fingerprint
              "BBB0 2DDF 2CEA F6A8 0D1D  E643 A2A0 6DF2 A33A 54FA")))))

(I ran guix pull && guix package -u just before I tried running the code, today.)

A manifest.scm file looking as follows:

(specifications->manifest
 '("guile"
   "guile-gi"))

manifest.scm and channels.scm are both inside guix-env/.

I am trying to get a working environment as follows:

guix time-machine --channels="guix-env/channels.scm" -- environment --manifest="guix-env/manifest.scm"

That seems to work, no error. Then I have the following code from the tutorial at https://spk121.github.io/guile-gi/Parsing-Typelibs-and-Creating-Bindings.html:

(use-modules (gi))
(use-typelibs
 ("GLib" "2.0")
 ("Gtk" "3.0"))

When I try to run this, I get the following:

guile example-00.scm 
;;; note: source file /home/user/dev/guile/guile-examples/gui/example-00.scm
;;;       newer than compiled /home/user/.cache/guile/ccache/3.0-LE-8-4.5/home/user/dev/guile/guile-examples/gui/example-00.scm.go
;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0
;;;       or pass the --no-auto-compile argument to disable.
;;; compiling /home/user/dev/guile/guile-examples/gui/example-00.scm

(process:119960): GuileGI-WARNING **: 23:30:30.755: no way of determining array size of GArray, coercing to pointer

(process:119960): GuileGI-WARNING **: 23:30:30.783: no way of determining array size of GArray, coercing to pointer

(process:119960): GuileGI-WARNING **: 23:30:30.783: no way of determining array size of GArray, coercing to pointer
;;; WARNING: compilation of /home/user/dev/guile/guile-examples/gui/example-00.scm failed:
;;; In procedure require: Typelib file for namespace 'Gtk', version '3.0' not found
Backtrace:
           6 (primitive-load "/home/user/dev/guile/guile-examples/gui/example-00.scm")
In ice-9/eval.scm:
   721:20  5 (primitive-eval (use-typelibs ("GLib" "2.0") ("Gtk" "3.0")))
In ice-9/psyntax.scm:
  1230:36  4 (expand-top-sequence ((use-typelibs ("GLib" "2.0") ("Gtk" "3.0"))) _ _ #f e (#) #)
  1222:19  3 (parse _ (("placeholder" placeholder)) ((top) #(ribcage () () ())) _ e (eval) (…))
   259:10  2 (parse _ (("placeholder" placeholder)) (()) _ c&e (eval) (hygiene guile-user))
In gi/repository.scm:
     48:2  1 (typelib->module _ "Gtk" _)
In unknown file:
           0 (require "Gtk" "3.0")

ERROR: In procedure require:
In procedure require: Typelib file for namespace 'Gtk', version '3.0' not found

I understand it somehow does not find Gtk. But what to do about it? Is there another package, that I need to install or add to my manifest.scm file, in order for the examples to work? Or perhaps a system package I need to install?

[ZelphirKaltstahl]

I think I fixed it by changing my manifest.scm file to:

(specifications->manifest
 '("guile"
   "guile-gi"
   "gtk+@3.24.30"))

Running in my GNU Guix environment:

guile example-00.scm 
;;; note: source file /home/user/dev/guile/guile-examples/gui/example-00.scm
;;;       newer than compiled /home/user/.cache/guile/ccache/3.0-LE-8-4.5/home/user/dev/guile/guile-examples/gui/example-00.scm.go
;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0
;;;       or pass the --no-auto-compile argument to disable.
;;; compiling /home/user/dev/guile/guile-examples/gui/example-00.scm

(process:123017): GuileGI-WARNING **: 23:45:35.490: no way of determining array size of GArray, coercing to pointer

(process:123017): GuileGI-WARNING **: 23:45:35.515: no way of determining array size of GArray, coercing to pointer

(process:123017): GuileGI-WARNING **: 23:45:35.515: no way of determining array size of GArray, coercing to pointer

(process:123017): GuileGI-WARNING **: 23:45:35.587: Editable - non-Object interface wants signals

(process:123017): GuileGI-WARNING **: 23:45:35.620: no way of determining array size of GArray, coercing to pointer

(process:123017): GuileGI-WARNING **: 23:45:35.620: no way of determining array size of GArray, coercing to pointer
;;; compiled /home/user/.cache/guile/ccache/3.0-LE-8-4.5/home/user/dev/guile/guile-examples/gui/example-00.scm.go
WARNING: (guile-user): imported module (gi) overrides core binding `quit'
WARNING: (guile-user): `quit' imported from both (gi) and (gi GLib-2.0)

[ZelphirKaltstahl]

For generating HTML docs (as per https://spk121.github.io/guile-gi/Generating-Documentation-from-Typelibs.html), it seems to be necessary to expand the manifest.scm to the following:

(specifications->manifest
 '("guile"
   "guile-gi"
   "gtk+@3.24.30"
   "gtk-doc"))

Otherwise

guild gi-gtkdoc --format=html --output=docs --namespace=GLib --version=2.0

will give an error:

# more logs here
In execvp of gtkdoc-mkhtml: No such file or directory