[fsflover]

Yes, you can install postmarketOS [0] with, e.g., SXMo [1] or KDE Plasma [2].

[0] https://wiki.postmarketos.org/wiki/Purism_Librem5_(purism-li...

[1] https://wiki.postmarketos.org/wiki/Sxmo

[2] https://wiki.postmarketos.org/wiki/Plasma_Mobile