The logo of postmarketOS was added to Nerd Fonts in v1.2.0, and it also shows up in the patched version of Meslo (installed via the package font-meslo-nerd from the Alpine Linux repos and ttf-meslo-nerd from the Arch Linux repos).
However, I haven't been able to find any references to postmarketOS in Powerlevel10k itself, so I'm guessing that for this to work, checking for the ID postmarketos in /etc/os-release needs to be implemented in Powerlevel10k as well.
The logo of postmarketOS was added to Nerd Fonts in v1.2.0, and it also shows up in the patched version of Meslo (installed via the package
font-meslo-nerdfrom the Alpine Linux repos andttf-meslo-nerdfrom the Arch Linux repos).However, I haven't been able to find any references to postmarketOS in Powerlevel10k itself, so I'm guessing that for this to work, checking for the ID
postmarketosin/etc/os-releaseneeds to be implemented in Powerlevel10k as well.