nixos/gnupg: unable to locate a valid pinentry command

[jonringer]

Describe the bug

continuation of #90214

using just programs.gnupg.agent.enable = true; doesn't create a fully valid gnupg installation, as the toolchain will also want to have access to a pinentry application.

gpg: agent_genkey failed: No pinentry
Key generation failed: No pinentry

gpgconf --check-programs
gpgconf: error running '/nix/store/dxf4w1gdp2x87d2q326a0064qnbvcl19-gnupg-2.2.20/bin/pinentry': probably not installed
gpg:OpenPGP:/nix/store/dxf4w1gdp2x87d2q326a0064qnbvcl19-gnupg-2.2.20/bin/gpg:1:1:
gpg-agent:Private Keys:/nix/store/dxf4w1gdp2x87d2q326a0064qnbvcl19-gnupg-2.2.20/bin/gpg-agent:1:1:
scdaemon:Smartcards:/nix/store/dxf4w1gdp2x87d2q326a0064qnbvcl19-gnupg-2.2.20/libexec/scdaemon:1:1:
gpgsm:S/MIME:/nix/store/dxf4w1gdp2x87d2q326a0064qnbvcl19-gnupg-2.2.20/bin/gpgsm:1:1:
dirmngr:Network:/nix/store/dxf4w1gdp2x87d2q326a0064qnbvcl19-gnupg-2.2.20/bin/dirmngr:1:1:
pinentry:Passphrase Entry:/nix/store/dxf4w1gdp2x87d2q326a0064qnbvcl19-gnupg-2.2.20/bin/pinentry:0:0:

To Reproduce
programs.gnupg.agent.enable = true; in configuration.nix

Expected behavior
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Additional context
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sent on behalf of someone else in discord. Personal environment is irrelevant.

[flokli]

@jonringer do you use home-manager or not? Is this a graphical or non-graphical system? Can you show us the output of systemctl --user cat gpg-agent.service?

[jonringer]

I'm more or less just reposting what someone on discord had trouble with. Seemed like an issue with the service, unfortunately I forgot who it was, and I personally don't use the service. I'm going to close as I don't have any further context to move forward.

[flokli]

Yeah, I encourage that someone on discord to open a bugreport ;-)

This likely requires some back-and-forth to understand the problem and possible solutions.

[jonringer]

My original assumption was that adding the package to environment.systemPackages would have fixed the user issue. Wasn't aware of the variants