[anaphor]

If you're really paranoid then you should build the code yourself from github, not just install the version on the play store.

[bduerst]

In a compiler that was compiled by someone else. /tinfoil hat

[TacticalCoder]

That's why in the future we'll be using compilers which are open-source and using deterministic builds and double-compilation (or "n-compilation") : )

[sneak]

I recently discovered that there are no basic deterministic OS image builds (like a bootable .iso) with just a toolchain and wget and gpg and a shell.

I was surprised; seems like a good basic target.

[LeonidasXIV]

Debian has an ongoing project for this, https://wiki.debian.org/ReproducibleBuilds driven by Lunar from the Tor project.