Hi Guix,
There seems to be some problem installing password-store + pinentry entirely via guix home. When I have both installed as such, I get the following outputs:
$ pinentry
OK Pleased to meet you
<C-c>
$ gpg --import ...
[prompts normally with pinentry, allows me to import]
$ pass
[my password entries]
$ pass [entry name]
gpg: decryption failed: No secret key
$ guix package -i pinentry
$ pass [entry name]
[prompts with pinentry and works normally]
So pinentry and pass seem to both be available, but don't work together unless I install pinentry via guix package.
My guix install is about two months behind, so sorry if this has already been patched.
-Zacchaeus