There isn't much need for that. Pyra may be shipped with whichever browser works well.I just meant a vote on browsers. This is the single piece of software we all appear to agree is required.
AFAIK firefox-esr compiled by debian armhf is slow on pyra, while vivaldi works fine. I personally prefer open-source non-google browser that supports modern web standards ( which may be firefox/falkon/qutebrowser or some other gecko/blink or qt5webengine based browser).
So practically we are left with either compiling a browser that works or use precompiled closed source vivaldi. Another alternative is to use some webkit2gtk based browser ( epiphany/midori/vimb etc.) but that may fail with some sites.