libpicoipp installation error on Raspberry Pi

[AndrewA]

When trying to install
https://labs.picotech.com/debian/pool/m ... _armhf.deb
on an raspbian, You may get an error message saying

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dpkg: error processing archive libpicoipp_1.1.2-4r56_armhf.deb (--install):
conffile name 'etc/ld.so.conf.d/picoscope.conf' is not an absolute pathname

Seems like recently dpkg do not accept relative pathnames in DEBIAN/conffiles so a quick fix would be to do:

Remove any Pico drivers installed (sudo apt get remove libpXXXX... etc)

Download the file above (libpicoipp_1.1.2-4r56_armhf.deb) into /home/pi/ for example
1.

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mkdir tmp

2.

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dpkg-deb -R libpicoipp_1.1.2-4r56_armhf.deb tmp

3. Edit tmp/DEBIAN/conffiles
and remove the first line-
"etc/ld.so.conf.d/picoscope.conf"

4. Rebuild the deb file

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dpkg-deb -b tmp libpicoipp_1.1.2-4r56_armhf_fixed.deb

5. Install rebuilt file-

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sudo apt install /home/pi/libpicoipp_1.1.2-4r56_armhf_fixed.deb

6. Install the required Pico driver-
(for example)

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sudo apt get install libps5000a

This removes the first line in conffiles
I have created a bug relating to this issue.

[potto]

Thanks Andrew. That solved my problem when trying to install libps2000a on a Raspberry Pi 3. Below is what was happening before I used your instructions to rebuild and install libpicoipp. Is Pico Technology planning on fixing this so the command "sudo apt install libps2000a" works without error on the Raspberry Pi? When I installed "libps2000" I did not have the same problem. Thanks for supporting the Pi. Cheers, Paul

=====Error before manually installing libpicoipp====
$ sudo apt install libps2000a
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
libps2000a : Depends: libpicoipp (>= 1.1.2-4r52) but it is not installable
E: Unable to correct problems, you have held broken packages.

[jade]

fyi Andrew: This is now affecting Debian Buster on x86_64 as well.
I appreciate that Linux is probably not considered an important platform compared to others, but is there any progress on the bug? It would be nice to have working/fixed packages available in the repositories as currently having the picoscope repositories enabled breaks system updates for me unless I remove the packages.

[jb2717]

Hello,

Am also having this problem on Pop!_OS 20.10

[RandomRDP]

This may be obvious but I just spent an hour trying to fix this problem on Ubuntu 20.10 on my laptop.

If you're on an x86 machine then download "libpicoipp_1.3.0-4r78_amd64.deb" instead.

https://labs.picotech.com/debian/pool/m ... _amd64.deb

[IvanSB]

Well actually the x86 newer version has still the same bug.

Preparing to unpack .../libpicoipp_1.3.0-4r78_amd64.deb ...
dpkg: error processing archive /var/cache/apt/archives/libpicoipp_1.3.0-4r78_amd64.deb (--unpack):
conffile name 'etc/ld.so.conf.d/picoscope.conf' is not an absolute pathname