Hello Manjaro users,
I am Janfi, a linux user since 1999, first with Redhat 4, then 6, Slackware from version 4 to 13.37, then Debian until now. My last windows machine was in 2004. I live in france and I’m 62. I was a professionnal software developper during my life.
I am a bit boring to always have outdated softwares and to compile some newer versions in ~/.local directory, so few days ago I decided to move to another distro. After exploring some of them, I encountered Manjaro.
I installed it to one of my computers on wich I develop MQL4 and C++ softwares. On this machine I need wine32 emulator to run a specific program. I tried to install it but I’ve seen that Manjaro works differently for 32 bit windows apps, I found some informations but not enough precise to help me. Can someone help me please ? I’ve seen that wine32 does exists on Arch.
Generally speaking, a lot of what is available on arch will run on manjaro.
I have no experience with wine32 (i use wine through bottles, i suppose it is amd64 there). I see it is not in the repos, but in the AUR. Be sure to familiarize yourself with aur and understand it is is user generated and officially unsupported. If you decide to use it - it may be wise to switch to manjaro unstable branch.
If you decide to go down that path (i have no idea if wine32 is the package you really need), you can sync mirrors and update, change branch, update again, get prerequisites, get aur helper, build.
sudo pacman-mirrors -f
sudo pacman -Syu
sudo pacman-mirrors --api --set-branch unstable
sudo pacman-mirrors --fasttrack 5 && sudo pacman -Syu
sudo pacman -S base-devel git yay
yay -S wine32
Thank you Teo,
I have enabled flatpack, install bottles (it install as many things as if I wanted to launch a space shuttle !) and I saw that bottles was ok to run my i386 app but not in Her directory because the directory was in my Linux home and not in .wine. (my app has a parameter /portable to be used on an other media)
Manjaro is a distro supposed to be simple and lightweight like Arch, to be simple, the packages must be standard, not exotic. Wine on Manjaro and Arch is not the wine I have seen everywhere, with commands like dpkg --add-architecture i386 to add i386 support, which is documented everywhere and works perfectly, instead of that, they have everything but simple wine. So I will continue to search for a better linux that Debian.
Welcome to the forum! 
I don’t use wine or anything Windows-related, but as I understand it, the prefixes are the .wine directories in your home directory, and their contents. You’ll need to delete those and reinstall the applications.
@janfi
… or transfer them into bottles, where you can keep using older wine versions which do support installing into 32 bit prefixes
~/.wine is just the default prefix - you can choose any other directory
If your main goal is development of wine apps then a fixed release like Debian is probably a good and wise choice for the next decade or more
(Debian 13 Trixie was released a few days ago).
The way wine has changed and will keep changing means that 32 bit prefixes will not really be easily portable anymore - except when run in Bottles, for instance.
Arch and Manjaro are constantly changing - using Bottles is a way to circumvent the effects of that on wine, to not rely on the wine version installed system wide.
If you are using flatpaks, they are entirely different animal. They are containerized. To access anything outside the container you have to allow the app (bottles) to do it. A nice gui flatpak permission manager is Flatseal
Is that also called “bottles”?
I only know that name as a management solution for wine (Windows) apps. 
… but I don’t use flatpak - never have
It is the same app. I just happen to use it in a flatpak form. I deliberately chose that option because of the container, i didn’t want anything windows-y touching my main os.
Ah - now I get it.
Good thinking, me thinks. 
Why have I not thought of that? Thanks for the inspiration!
Funny, I remember dpkg --reconfigure was the first paper-cut moving to Manjaro; though apart from that generally it’s MUCH better.
However, what you have done is introduce an XYZ problem:
"I want to install and run A CERTAIN PROGRAM "<= the real issue carefully kept a secret
“By running wine32” <= not necessarily the way to get it done.
So you’re asking for a solution for a solution, not the problem.
I would suggest you tell use what ‘A Certain Program’ is, then we can maybe come up with something clever for you 
I had a lot of success running a few Windows binaries on Manjaro.