GNU bug report logs - #38929
sane-hpaio not found by simple-scan?

Previous Next

To reply to this bug, email your comments to 38929 AT debbugs.gnu.org.

Toggle the display of automated, internal messages from the tracker.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Arne Babenhauserheide <arne_bab <at> web.de>
To: bug-guix <at> gnu.org
Subject: sane-hpaio not found by simple-scan?
Date: Sat, 04 Jan 2020 23:38:46 +0100

I have a scanner in HP Photosmart C3100 series. Using simple-scan I get
the information that I need to install the driver sane-hpaio.

But simple-scan has sane-backends as input for which the Guix source file
says "This variant links in the hpaio backend, provided by hplip".

So somehow simple-scan does not find ~/.guix-profile/lib/sane/hpaio.so.1
(which exists).

It actually works when I call it as follows:

LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:$HOME/.guix-profile/lib" simple-scan

But this cannot be the proper solution.

Best wishes,
Arne
-- 
Unpolitisch sein
heißt politisch sein
ohne es zu merken

Message #8 received at 38929 <at> debbugs.gnu.org (full text, mbox):

From: raid5atemyhomework <raid5atemyhomework <at> protonmail.com>
To: "38929 <at> debbugs.gnu.org" <38929 <at> debbugs.gnu.org>
Subject: Re: sane-hpaio not found by simple-scan?
Date: Wed, 10 Feb 2021 12:32:44 +0000

I have a USB-connected HP DeskJet Ink Advantage 1515 printer/scanner.

On my own system (this is a full Guix System, not Guix on a foreign distro) I modified the configuration.scm:

```scheme
(use-package-modules #;... scanner)

(operating-system
  #;...
  (services
    (append
      #;...
      (modify-services %desktop-services
        (sane-service-type _ => sane-backends))))
  #;...)
```

After `sudo guix system reconfigure configuration.scm`, `simple-scan` still could not find it.  However, on reboot, it was able to find my already-connected USB printer/scanner without any issues.

Perhaps only some kind of force-trigger of `udev` would be needed after the above setup, but `udev` is pretty early in the Shepherd tree.

On the other hand the `sane-service-type` documentation in `info guix` is ***severely*** lacking, and the documentation is somehow lost in the middle of documentation about geolocation services, so it should probably be fixed.

Thanks
raid5atemyhomework

Message #11 received at 38929 <at> debbugs.gnu.org (full text, mbox):

From: Rostislav Svoboda <rostislav.svoboda <at> gmail.com>
To: guix-patches <at> gnu.org,
	38929 <at> debbugs.gnu.org
Cc: Rostislav Svoboda <Rostislav.Svoboda <at> gmail.com>
Subject: [PATCH] gnu: simple-scan: enable scanning over network for eSCL/WSD
 scanners
Date: Mon,  9 Jun 2025 15:21:03 +0200

* gnu/packages/gnome.scm (simple-scan)[inputs]: Add sane-airscan.
<#:phases>: Wrap simple-scan to set
  - LD_LIBRARY_PATH to sane-airscan's lib/sane
  - SANE_CONFIG_DIR to sane-airscan's etc/sane.d

This change allows simple-scan to automatically detect and use eSCL or WSD
(AirScan) backends over the network.

Change-Id: Id1d95c77c3fc549b7baf91d31049541a687bce2d
---
 gnu/packages/gnome.scm | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/gnome.scm b/gnu/packages/gnome.scm
index 56236013a7..3bc26192ff 100644
--- a/gnu/packages/gnome.scm
+++ b/gnu/packages/gnome.scm
@@ -7330,7 +7330,19 @@ (define-public simple-scan
         (base32 "1aghnkvjdyj73kv55nd9gl5b1xjkpcxjn4j3a6z67r9g2j86avn1"))))
     (build-system meson-build-system)
     (arguments
-     '(#:glib-or-gtk? #t))
+     (list
+      #:glib-or-gtk? #t
+      #:phases
+      #~(modify-phases %standard-phases
+          (add-after 'install 'wrap-flatpak
+            (lambda* (#:key inputs #:allow-other-keys)
+              (let ((simple-scan (string-append #$output "/bin/simple-scan"))
+                    (sane-airscan-inputs (assoc-ref inputs "sane-airscan")))
+                (wrap-program simple-scan
+                  `("LD_LIBRARY_PATH" =
+                    (,(string-append sane-airscan-inputs "/lib/sane")))
+                  `("SANE_CONFIG_DIR" prefix
+                    (,(string-append sane-airscan-inputs "/etc/sane.d"))))))))))
     (native-inputs
      (list gettext-minimal
            itstool
@@ -7347,6 +7359,7 @@ (define-public simple-scan
            gdk-pixbuf
            gusb
            libadwaita
+           sane-airscan
            sane-backends))
     (home-page "https://gitlab.gnome.org/GNOME/simple-scan")
     (synopsis "Document and image scanner")

base-commit: 03ce76718c41b32d174713c945d269d6fcdd8bf1
-- 
2.49.0

Message #14 received at 38929 <at> debbugs.gnu.org (full text, mbox):

From: Liliana Marie Prikler <liliana.prikler <at> gmail.com>
To: Rostislav Svoboda <rostislav.svoboda <at> gmail.com>, 78732 <at> debbugs.gnu.org, 
 38929 <at> debbugs.gnu.org
Cc: Noé Lopez <noelopez <at> free.fr>,
 Vivien Kraus <vivien <at> planete-kraus.eu>,
 Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
Subject: Re: [bug#78732] [PATCH] gnu: simple-scan: enable scanning over
 network for eSCL/WSD scanners
Date: Mon, 09 Jun 2025 20:34:02 +0200

Am Montag, dem 09.06.2025 um 15:21 +0200 schrieb Rostislav Svoboda:
> * gnu/packages/gnome.scm (simple-scan)[inputs]: Add sane-airscan.
> <#:phases>: Wrap simple-scan to set
>   - LD_LIBRARY_PATH to sane-airscan's lib/sane
>   - SANE_CONFIG_DIR to sane-airscan's etc/sane.d
> 
> This change allows simple-scan to automatically detect and use eSCL
> or WSD (AirScan) backends over the network.
> 
> Change-Id: Id1d95c77c3fc549b7baf91d31049541a687bce2d
The LD_LIBRARY_PATH looks suspicious.  Is there any way around it using
other SANE tooling?

Cheers

Message #17 received at 38929 <at> debbugs.gnu.org (full text, mbox):

From: Rostislav Svoboda <rostislav.svoboda <at> gmail.com>
To: Liliana Marie Prikler <liliana.prikler <at> gmail.com>
Cc: Vivien Kraus <vivien <at> planete-kraus.eu>, 38929 <at> debbugs.gnu.org,
 78732 <at> debbugs.gnu.org, Noé Lopez <noelopez <at> free.fr>,
 Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
Subject: Re: [bug#78732] [PATCH] gnu: simple-scan: enable scanning over
 network for eSCL/WSD scanners
Date: Mon, 9 Jun 2025 21:38:10 +0200

[Message part 1 (text/plain, inline)]

Hello

> The LD_LIBRARY_PATH looks suspicious.

What exactly is suspicious?

>  Is there any way around it using other SANE tooling?

AFAIK there's no simpler runtime-only solution:
- You could use patchelf to prepend the store's lib/sane directory
onto the binary's RPATH, but that's as even even more fiddly as
setting LD_LIBRARY_PATH
- sane-config only spits out compile-time flags (-I..., -L...,
-lsane); it doesn't tell the loader where to find backends at runtime.

BTW, I've polished the patch. Please ignore the previous one - the
phase name was wrong ("wrap-flatpak" instead of "wrap-simple-scan").


Cheers

[0001-gnu-simple-scan-enable-scanning-over-network-for-eSC.patch (text/x-patch, attachment)]

Message #20 received at 38929 <at> debbugs.gnu.org (full text, mbox):

From: Sergey Trofimov <sarg <at> sarg.org.ru>
To: Rostislav Svoboda <rostislav.svoboda <at> gmail.com>
Cc: Vivien Kraus <vivien <at> planete-kraus.eu>,
 Maxim Cournoyer <maxim.cournoyer <at> gmail.com>, 38929 <at> debbugs.gnu.org,
 Liliana Marie Prikler <liliana.prikler <at> gmail.com>, 78732 <at> debbugs.gnu.org,
 Noé Lopez <noelopez <at> free.fr>
Subject: Re: [bug#78732] [PATCH] gnu: simple-scan: enable scanning over
 network for eSCL/WSD scanners
Date: Thu, 12 Jun 2025 13:04:02 +0200

Hi,

Rostislav Svoboda <rostislav.svoboda <at> gmail.com> writes:

> Hello
>
>> The LD_LIBRARY_PATH looks suspicious.
>
> What exactly is suspicious?
>
>>  Is there any way around it using other SANE tooling?
>
> AFAIK there's no simpler runtime-only solution:
> - You could use patchelf to prepend the store's lib/sane directory
> onto the binary's RPATH, but that's as even even more fiddly as
> setting LD_LIBRARY_PATH
> - sane-config only spits out compile-time flags (-I..., -L...,
> -lsane); it doesn't tell the loader where to find backends at runtime.
>

I've proposed another solution on codeberg, please take a look
https://codeberg.org/guix/guix/pulls/541

Message #23 received at 38929 <at> debbugs.gnu.org (full text, mbox):

From: Sergey Trofimov <sarg <at> sarg.org.ru>
To: Arne Babenhauserheide <arne_bab <at> web.de>
Cc: 38929 <at> debbugs.gnu.org
Subject: Re: bug#38929: sane-hpaio not found by simple-scan?
Date: Tue, 30 Sep 2025 14:33:40 +0200

Hi, 

Arne Babenhauserheide <arne_bab <at> web.de> writes:

> I have a scanner in HP Photosmart C3100 series. Using simple-scan I get
> the information that I need to install the driver sane-hpaio.
>
> But simple-scan has sane-backends as input for which the Guix source file
> says "This variant links in the hpaio backend, provided by hplip".
>

sane configuration has been revised. You need to add hplip to
sane-service-type configuration and then simple-scan should just work.

Message #26 received at 38929 <at> debbugs.gnu.org (full text, mbox):

From: Sergey Trofimov <sarg <at> sarg.org.ru>
To: Rostislav Svoboda <rostislav.svoboda <at> gmail.com>
Cc: Vivien Kraus <vivien <at> planete-kraus.eu>,
 Maxim Cournoyer <maxim.cournoyer <at> gmail.com>,
 Noé Lopez <noelopez <at> free.fr>,
 Liliana Marie Prikler <liliana.prikler <at> gmail.com>, 78732 <at> debbugs.gnu.org,
 38929 <at> debbugs.gnu.org
Subject: Re: [bug#78732] [PATCH] gnu: simple-scan: enable scanning over
 network for eSCL/WSD scanners
Date: Tue, 30 Sep 2025 14:41:23 +0200

Hi,

Rostislav Svoboda <rostislav.svoboda <at> gmail.com> writes:

> * gnu/packages/gnome.scm (simple-scan)[inputs]: Add sane-airscan.
> <#:phases>: Wrap simple-scan to set
>   - LD_LIBRARY_PATH to sane-airscan's lib/sane
>   - SANE_CONFIG_DIR to sane-airscan's etc/sane.d
>
> This change allows simple-scan to automatically detect and use eSCL or WSD
> (AirScan) backends over the network.
> ...

sane configuration has been revised. Now you need to specify the
backends in sane-service-type configuration and then client programs
should just work. Please confirm it works for you and close the bug.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.