I am trying to install Bottles and Bitwig Studio, both are on AUR but are not showing in a search under pamac-GTK (pamac-manager). I have enabled AUR support under the Third party tab and refreshed the databases.
Moderator edit: Topic title edited to removed erroneous reference to Pacman.
Just had the same problem. Try
pamac update --aur --force-refresh
uname = 5.15.167-1-MANJARO #1
This is my output. It fails to refresh AUR and I am unsure if I should say Y to the output at the end ?
Warning: Building packages as dynamic user
Warning: Setting build directory to /var/cache/pamac
Preparing…
Synchronizing package databases…
Error: restricting filesystem access failed because the landlock rule for the temporary download directory could not be added!
Refreshing core.db…
Refreshing extra.db…
Refreshing community.db…
Refreshing multilib.db…
Error: restricting filesystem access failed because the landlock rule for the temporary download directory could not be added!
Refreshing core.files…
Refreshing extra.files…
Refreshing community.files…
Refreshing multilib.files…
Refreshing AUR…
Failed to synchronize AUR database
Checking pan dependencies…
Checking metis dependencies…
Checking pyside2 dependencies…
Checking python-shiboken2 dependencies…
Checking pulseaudio-ctl dependencies…
Checking rest dependencies…
Checking clang-opencl-headers-minimal-git dependencies…
Checking clang-build-analyzer-git dependencies…
Checking clang-format-static-bin dependencies…
Checking clangd-opt-git dependencies…
Checking clang-libs-minimal-git dependencies…
Checking clang-format-linter-git dependencies…
Checking llvm-rocm-git dependencies…
Checking llvm-git dependencies…
Checking clang-minimal-git dependencies…
Checking llvm-libs-minimal-git dependencies…
Checking llvm-libs-rocm-git dependencies…
Checking llvm-libs-git dependencies…
Resolving dependencies…
Warning: cannot resolve “clang=17.0.6”, a dependency of “python-shiboken2”
Warning: cannot resolve “clang=17.0.6”, a dependency of “pyside2”
Warning: cannot resolve “clang=17.0.6”, a dependency of “python-shiboken2”
Error: Failed to prepare transaction:
could not satisfy dependencies:
Edit build files : [e]
Apply transaction ? [e/y/N]
Your problem is that your system is in an unmaintained state.
Do you have these packages on purpose?
Or are they just leftovers from long ago that were dropped to the AUR?
They should very likely be removed.
This may or may not apply to some of your other packages as well.
This also indicates lack of maintenance, as the community repo has not existed for quite a long time.
It also probably means you have not managed pacnews, which is a requirement.
I have only ever updated this system using pacman -Syu or pacman -Syuu. I am unsure what these packages are for. I am unsure how to fix this. I cannot seem to remove those packages and I guess they are left overs.
Then you need to remove them.
For the rest of the AUR packages … they should likely be removed as well, especially if you dont know what they are, especially if they are never updated. Though some you may have inadvertently recieved as a replacement for a regular package. llvm-libs-git is an example - maybe you dont need the AUR package once you remove other unneeded third party packages, but you do wish to have llvm-libs from the repos.
It will be up to you to sort through these and make such determinations.
But there should be no problem simply removing the more obvious roadblock python-shiboken2 and pyside2 packages.
OK removed them and got much further… Is the landlock warning due to my kernel version ?
pamac update --aur --force-refresh
Preparing…
==== AUTHENTICATING FOR org.manjaro.pamac.commit ====
Authentication is required to install, update, or remove packages
Authenticating as: David (david)
Password:
==== AUTHENTICATION COMPLETE ====
Synchronizing package databases…
Error: restricting filesystem access failed because the landlock rule for the temporary download directory could not be added!
Refreshing core.db…
Refreshing extra.db…
Refreshing community.db…
Refreshing multilib.db…
Error: restricting filesystem access failed because the landlock rule for the temporary download directory could not be added!
Refreshing core.files…
Refreshing extra.files…
Refreshing community.files…
Refreshing multilib.files…
Refreshing AUR…
Nothing to do.
Transaction successfully finished.
Likely, yes, as the feature was not available until kernel ~6.2 (?).
You can also disable the sandbox feature thing for pacman via the option in its config and/or --disable-sandbox flag. I have no idea how this affects pamac or how pamac is using it etc. Pamac is supposedly built directly on ALPM and intended to be a pacman replacement, but still uses various pacman resources. 
BONUS
We might be interested in your foreign packages in general. Or orphans. To print both groups:
pacman -Qmq
pacman -Qdtq
And you still need to manage your pacnews. To print them all:
pacdiff -o
(if you dont have pacdiff … then please install pacman-contrib package)
Installed a later kernel (6.6) and the landlock warning has gone. AUR is working again under the GUI. Here are the outputs from those 2 new commands.
pacman -Qmq
gcolor2
grub-theme-manjaro-dev
gtkhash
gtkhash-nemo
ipw2100-fw
ipw2200-fw
js102
js78
kjs
libcroco
libsidplay
libvisual
manjaro-documentation-en
manjaro-firmware
manjaro-hotfixes
python-manjaro-sdk
spectre-meltdown-checker
systemd-fsck-silent
web-installer-url-handler
webkit2gtk-5.0
xcursor-chameleon-pearl-deepin
AND…
[david@Asus-i7 ~]$ pacman -Qdtq
alsa-card-profiles
appstream-glib
box2d
cython
fakeroot
gcab
geocode-glib
gmime3
gnome-desktop-4
gptfdisk
gst-python
gtkspell
gtkspell3
js102
js78
kjs
ldns
lib32-libcanberra
lib32-readline
libcddb
libcroco
libcryptui
libgit2
libindicator-gtk3
libpurple
libsidplay
libutempter
libvisual
lua52
lua53
mbedtls
mbedtls2
ndctl
net-snmp
perl-parse-yapp
python-nspektr
python-ply
python-pycurl
python-pydantic
python-pyparsing
python-pyqt5-webengine
python-reportlab
re2
totem-pl-parser
wayland-protocols
web-installer-url-handler
webkit2gtk-5.0
webrtc-audio-processing
xcursor-breeze
For most of these it will be up to you to decide whether they are desirable or not.
But i can point out a few that dont even exist in the AUR … so are very very likely candidates for removal.
But I will make a note again that its possible you somehow have some of these packages instead of the defaults. Make sure you have grub-theme-manjaro for example. Or if you want what ipw2***-fw provided to install ipw2x00-firmware from the AUR instead. I dont know the composition of that alien systemd-fsck-silent package, but make sure you have regular systemd installed.
The rest are … simply regular AUR packages. gcolor2 is a GTK2 color selector application. Maybe you want it. I do not know (though with the gtk2 toolkit being so old, it is probably an odd choice).
Orphans are a slightly different scenario. These are all packages that were installed as a dependency of another package, but are now not required by any other package.
Sometimes this can include still desirable packages. In that case the package should be marked as ‘explicitly installed’ - which will make it no longer an orphan.
Managing orphans is a whole other subject so here is the Archwiki on that;
https://wiki.archlinux.org/title/Pacman/Tips_and_tricks#Removing_unused_packages_(orphans)
Done some more cleanup… I have run pamac list -m -q > ~/pkglist.txt to get the following remaining…
ipw2100-fw
manjaro-firmware
python-manjaro-sdk
systemd-fsck-silent
web-installer-url-handler
webkit2gtk-5.0
xcursor-chameleon-pearl-deepin
I am a bit concerned in removing some of these such as the systemd one for example and the web-installer-url-handler which says is used to download software from software.manjaro.org.
I don’t want to break the system.
All of these should be removed.
The only extra considerations are
systemd installed.ipw2** firmware is desirable for you then it should be replaced with ipw2x00-firmware (AUR - Firmware for ipw2100 and ipw2200 drivers)linux-firmware-whence
linux-firmware-qlogic
linux-firmware-qcom
linux-firmware-nfp
linux-firmware-mellanox
linux-firmware-marvell
linux-firmware-liquidio
linux-firmware-bnx2x
linux-firmware
But as you can see the majority are for very specific pieces of hardware and are only helpful in the case you are actually using those devices.
So if we assume you dont need any of the firmware replacements (again even removing these is not in question - only whether you want something similar that does exist), and we make extra double sure you have systemd;
sudo pacman -Syu systemd && sudo pacman -Rns $(cat ~/pkglist.txt)
PS.
For some extra explains…
This is covered above. You dont need that package, but if it is somehow replacing regular systemd, then install systemd which will replace it. If not, then its simply ok to remove.
This was never actually very helpful.
It was supposed to make it easier to click on links at that web URL and then install a package that way.
(I wont get into the actual makeup … both the software and the site had issues)
But that address does not even truly exist anymore and now redirects to a third-party branch-compare tool Branch compare for Manjaro.
The package has absolutely no practical use today.
Thank you for all the help. I will continue to clean up any foreign packages but may just leave the orphan ones for now. Systemd was already installed so the systemd-fsck-silent was not needed. No idea what it even does.
At one point it was used to set the systemd automatic filesystem check during boot to ‘silent’ (not print text on the screen).
Its not needed, could be set other ways, but is also usurped by the current default boot setup (that does not even use systemd’s fsck* and also uses plymouth boot splash with no text on screen).
If my memory serves - the package doesnt exist anymore, so I cant really inspect it. 
* This doesnt mean you dont have fsck check. If you look in /etc/mkinitcpio.conf you should see fsck on the end of the HOOKS line - this means that the filesystem check will happen before mounting. For more info see: fsck - ArchWiki
Cheers. Happy penguining.
And dont forget to manage those pacnews. 
( We are confident you have some, because one such would be /etc/pacman.conf.pacnew, which would show the [community] repo removed among other changes. )
https://wiki.manjaro.org/index.php/System_Maintenance#Pacnew_and_Pacsave_files
I have cleared the remaining foreign left over packages and all is well now. I will check through the orphans and maybe remove any that are not likely to be needed again. pacnews is now installed to keep tabs on important info. And I have now installed BitWig Studio from AUR which is what started all this off.
Thankyou Again.
PS I am definitely not a Linux expert but have gone from Fedora → Ubuntu → Solus → Manjaro since 2004. Learning all the time still.
…
Oh, I just looked and there is a package by that name that produces Arch Linux news.
Thats not what I meant. Please follow the link I posted.
Or if not then follow along here;
sudo pacman -Syu pacman-contrib meld
pacdiff -o
That last command should print a list. This will show you all the pacnew files you need to manage.
You can begin managing them by running
DIFFPROG=meld pacdiff -s
And press ‘v’ for each file, merging new content from the *.pacnew into your existing system file as needed.
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