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	Sun, 30 Nov 2025 02:13:02 +0000 (UTC)
From: Arun Isaac <arunisaac@systemreboot.net>
To: Simon Tournier <zimon.toutoune@gmail.com>, ravanan@systemreboot.net
Subject: Re: Backtrace on hello world
In-Reply-To: <87fra0y4th.fsf@gmail.com>
References: <87fra0y4th.fsf@gmail.com>
Date: Sun, 30 Nov 2025 02:13:00 +0000
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Hi Simon,

Thanks for trying out ravanan!

> First, I notice that the project on Github [1] has the =E2=80=9CPull Requ=
est=E2=80=9D
> available but the README mentions: =C2=AB We do not accept issues or pull
> requests on GitHub. =C2=BB
>
> Moreover, I have not found the Issue tracker; hence the report here.
> :-)

You found the right place! :-) The working plan for the moment is to do
both issues and patches over email the old fashioned way.

> First thing, the option =E2=80=99--store=E2=80=99 seems mandatory when =
=E2=80=99--help=E2=80=99 does not
> mention it, if I read correctly.

It is documented. See below:
--8<---------------cut here---------------start------------->8---
$ ravanan --help 2>&1 | grep store
Usage: /gnu/store/gddra8pjszmw0bfyhmgipsg12r88195v-ravanan-0.2.0/bin/.ravan=
an-real [OPTIONS] CWL-WORKFLOW INPUTS
  --store=3DSTORE                  path to shared store to write results in=
to
--8<---------------cut here---------------end--------------->8---

> Second, maybe I=E2=80=99m missing something:
>
> --8<---------------cut here---------------start------------->8---
> $ ravanan doc/hello-world.cwl doc/hello-world-inputs.json --store=3D/tmp/=
foo
> Backtrace:
> In ice-9/boot-9.scm:
>   1752:10 17 (with-exception-handler _ _ #:unwind? _ #:unwind-for-type _)
> In unknown file:
>           16 (apply-smob/0 #<thunk 79b46b5132a0>)
> In ice-9/boot-9.scm:
>     724:2 15 (call-with-prompt _ _ #<procedure default-prompt-handler (k =
proc)>)
> In ice-9/eval.scm:
>     619:8 14 (_ #(#(#<directory (guile-user) 79b46b518c80>)))
> In ice-9/boot-9.scm:
>     152:2 13 (with-fluid* _ _ _)
>     152:2 12 (with-fluid* _ _ _)
> In ice-9/eval.scm:
>     619:8 11 (_ #(#(#(#(#(#(#(#(#<directory (guile-user) 79b46b518c80> ((=
store . "/tmp/f=E2=80=A6") =E2=80=A6) =E2=80=A6)) =E2=80=A6) =E2=80=A6) =E2=
=80=A6) =E2=80=A6) =E2=80=A6) =E2=80=A6))
>    293:34 10 (_ #(#(#(#<directory (guile-user) 79b46b518c80> "doc/hello-w=
orld.cwl" ((store . "/tmp/foo") =E2=80=A6) =E2=80=A6) =E2=80=A6) =E2=80=A6))
> In ice-9/boot-9.scm:
>     724:2  9 (call-with-prompt ("prompt") #<procedure 79b44cb8e9e0 at ice=
-9/eval.scm:330:13 ()> #<procedure 79b44c=E2=80=A6>)
>   1752:10  8 (with-exception-handler _ _ #:unwind? _ #:unwind-for-type _)
> In ravanan/workflow.scm:
>    635:25  7 (run-workflow "hello-world" #f #f (("baseCommand" . #("echo"=
 "Hello")) ("outputs" . #(((# . #) =E2=80=A6))) =E2=80=A6) =E2=80=A6)
> In ice-9/boot-9.scm:
>   1752:10  6 (with-exception-handler _ _ #:unwind? _ #:unwind-for-type _)
> In guix/store.scm:
>    690:37  5 (thunk)
> In ravanan/workflow.scm:
>    204:25  4 (workflow->scheduler-proc "hello-world" (("baseCommand" . #(=
"echo" "Hello")) ("outputs" . #((# =E2=80=A6))) =E2=80=A6) =E2=80=A6)
> In ravanan/command-line-tool.scm:
>    618:49  3 (build-command-line-tool-script "hello-world" #f #f (("baseC=
ommand" . #("echo" "Hello")) ("o=E2=80=A6" . #) =E2=80=A6) =E2=80=A6)
> In rnrs/base.scm:
>    253:18  2 (vector-map #<procedure 79b44cb8f1a0 at ice-9/boot-9.scm:797=
:8 args> #f)
> 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 vector-length: Wrong type argument in position 1 (expecting =
vector): #f
> --8<---------------cut here---------------end--------------->8---

Oops, this is very embarrassing! I've fixed it now and added tests to
prevent regression.

https://klaus.systemreboot.net/ravanan/commit/c5bccca30b03f6dfef5d6efaaafc2=
0fa9b25f164/
https://klaus.systemreboot.net/ravanan/commit/426201609e13d47960a922456cbbd=
df61cde3330/

Now, on the latest ravanan (a0b7e7ab6de830182ab30a0e417eefb56a07fd2f),
you can run it like so:

$ ravanan --store=3Dstore --guix-manifest=3Ddoc/hello-world-manifest.scm
doc/hello-world.cwl doc/hello-world-inputs.yaml

Regards,
Arun