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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.programs.gnupg;
in
{
options.programs.gnupg = {
agent.enable = mkOption {
type = types.bool;
default = false;
description = ''
Enables GnuPG agent with socket-activation for every user session.
'';
};
agent.enableSSHSupport = mkOption {
type = types.bool;
default = true;
description = ''
Enable SSH agent support in GnuPG agent. Also sets SSH_AUTH_SOCK
environment variable correctly. This will disable socket-activation
and thus always start a GnuPG agent per user session.
'';
};
};
config = mkIf cfg.agent.enable {
systemd.user.services.gpg-agent = {
serviceConfig = {
ExecStart = [
""
("${pkgs.gnupg}/bin/gpg-agent --supervised "
+ optionalString cfg.agent.enableSSHSupport "--enable-ssh-support")
];
};
};
systemd.user.sockets.gpg-agent = {
wantedBy = [ "sockets.target" ];
};
systemd.user.sockets.gpg-agent-ssh = mkIf cfg.agent.enableSSHSupport {
wantedBy = [ "sockets.target" ];
};
systemd.packages = [ pkgs.gnupg ];
environment.extraInit = ''
# Bind gpg-agent to this TTY if gpg commands are used.
export GPG_TTY=$(tty)
'' + (optionalString cfg.agent.enableSSHSupport ''
# SSH agent protocol doesn't support changing TTYs, so bind the agent
# to every new TTY.
${pkgs.gnupg}/bin/gpg-connect-agent --quiet updatestartuptty /bye > /dev/null
if [ -z "$SSH_AUTH_SOCK" ]; then
export SSH_AUTH_SOCK=$(${pkgs.gnupg}/bin/gpgconf --list-dirs agent-ssh-socket)
fi
'');
assertions = [
{ assertion = cfg.agent.enableSSHSupport && !config.programs.ssh.startAgent;
message = "You can't use ssh-agent and GnuPG agent with SSH support enabled at the same time!";
}
];
};
}
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