broadcom wireless macbook air

[Kapu]

Hi, I just installed Manjaro-GNOME on my air macbook, but the wifi doesn't work. So I tried to install the broadcom-wl-dkms package, retrieved here https://manjaro.moson.eu/stable/extra/x86_64/.

It has a dkms addiction, which I got from the same site. However, I can't install dkms-2.8.1-1-any.pkg.tar.xz. When I try pacman -U /waytomayfile/dkms.xz I get: Unrecognized archive format.

How do I install the driver for my air macbook?

Here is what my inxi gives :

 Network: Device-1: Broadcom and subsidiaries BCM4360 802.11ac Wireless Network Adapter vendor: Apple driver: bcma-pci-bridge 
           v: N/A port: efa0 bus ID: 03:00.0 
And I tried the linux54-broadcom-wl driver but without success.

This specific question follows this exchange start here: [SOLVED] Installation on MacBook Air - WIFI . I will link these two topics as soon as I have a solution to the problem.

[Kapu]

Okay, for the record, wi-fi works with the DKMS driver. I didn't manage to install it offline, I was able to connect via bluetooth sharing from an android phone.

And this post saved me: Broadcom wifi driver fails to install properly
In particular, I had to install the linux-headers, which I didn't do.