decryption failed: No pinentry

[Christopher Richardson]

This is probably something very trivial, but I’m building gpg for the first time since, apparently,  2013, according to my old binary. The build seems fine, but ...

cwr at cwr2019mbp passwds % gpg --decrypt personal.gpg 
gpg: encrypted with elg2048 key, ID 4CDB599A36DD7843, created 2000-07-26
      "Christopher W. Richardson <cwr at cwrichardson.com>"
gpg: using "04B90F4FA999D22FBFB769773FAE5104E3874F31" as default secret key for signing
gpg: public key decryption failed: No pinentry
gpg: decryption failed: No pinentry
cwr at cwr2019mbp passwds % which pinentry
/usr/local/bin/pinentry
cwr at cwr2019mbp passwds % pinentry
OK Pleased to meet you
cwr at cwr2019mbp passwds % uname -a
Darwin cwr2019mbp.local 20.5.0 Darwin Kernel Version 20.5.0: Sat May  8 05:10:33 PDT 2021; root:xnu-7195.121.3~9/RELEASE_X86_64 x86_64

No homebrew or other package manager installed, just native XTools and the command line tools.

Suggestions?