jan@Rechenknecht:~$ sudo add-apt-repository ppa:nextcloud-devs/client
The Nextcloud desktop client compiled for Ubuntu
More info: https://launchpad.net/~nextcloud-devs/+archive/ubuntu/client
Press [ENTER] to continue or ctrl-c to cancel adding it
gpg: keybox '/tmp/tmpkw4izpp7/pubring.gpg' created
gpg: /tmp/tmpkw4izpp7/trustdb.gpg: trustdb created
gpg: key 60EE47FBAD3DD469: public key "Launchpad PPA for Nextcloud development" imported
gpg: Total number processed: 1
gpg: imported: 1
gpg: no valid OpenPGP data found.
jan@Rechenknecht:~$ sudo apt-get update
Hit:1 http://repo.puri.sm/pureos green InRelease
Get:2 http://ppa.launchpad.net/nextcloud-devs/client/ubuntu artful InRelease [15.9 kB]
Err:2 http://ppa.launchpad.net/nextcloud-devs/client/ubuntu artful InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 60EE47FBAD3DD469
Reading package lists... Done
W: GPG error: http://ppa.launchpad.net/nextcloud-devs/client/ubuntu artful InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 60EE47FBAD3DD469
E: The repository 'http://ppa.launchpad.net/nextcloud-devs/client/ubuntu artful InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
I was told that PureOS needs to ship the keys for that repo? Would be cool if we can get that fixed so people can use Nextcloud.
Save the key (everything from -----BEGIN PGP PUBLIC KEY BLOCK----- to -----END PGP PUBLIC KEY BLOCK-----) including those lines to a text file with gpg extension. Then start program Software & Updates go to Authentication tab and import the key. You should be able to sudo apt update without problems now.
Hello mladen,
with my new ibrem13 [now finally shipped (thanks for your support!)] I had the same Problem trying to install nextcloud-client.
I followed your advice and copied the PGP-Block in a gpg-file as shown in the Picture and added this file to the trusted software.
As result I unfortunately got the error, that the file might probably not be a gpg, or broken!
I’d love to help you more but for now I don’t have access to the computer running pureOS so I can’t help you much here.
Considering that some people succeeded installing and running this software, let’s make sure you ran these exact commands in this exact order: sudo apt update sudo apt upgrade sudo apt full-upgrade
If these won’t help, unfortunately I won’t be able to help you for now. Maybe someone else could.