workstation: drop gpg in favor of SSH key

modules/workstation/home-manager/default.nix

@@ -24,7 +24,7 @@ in
     ./desktop
     ./development
     ./fish.nix
-    ./gpg.nix
+    ./ssh.nix
     ./communication.nix
     ./mail.nix
     ./helix.nix

modules/workstation/home-manager/development/default.nix

@@ -25,14 +25,15 @@ with lib;
     package = pkgs.gitAndTools.gitFull;
     userName = "Victor Mignot";
     userEmail = "dala@dalaran.fr";
-    signing = mkIf config.my.pgp.enable {
-      key = "BEAFED3D";
+    signing = {
+      key = "~/.ssh/id_ed25519_sk.pub";
       signByDefault = true;
     };
     extraConfig = {
       init = {
         defaultBranch = "main";
       };
+      gpg.format = "ssh";
       core = {
         editor = "${pkgs.helix}/bin/hx";
       };

modules/workstation/home-manager/gpg.nix

@@ -1,29 +0,0 @@
-{
-  config,
-  lib,
-  pkgs,
-  ...
-}:
-with lib;
-{
-  options.my.pgp.enable = mkOption {
-    type = types.bool;
-    default = true;
-    example = false;
-    description = ''
-      Add GPG keyring and GPG Agent configuration.
-    '';
-  };
-
-  config = mkIf config.my.pgp.enable {
-    programs.gpg.enable = true;
-
-    services.gpg-agent = {
-      enable = true;
-      enableScDaemon = true;
-      enableSshSupport = true;
-      sshKeys = [ "40DE2FEE4D3C5E2C" ];
-      pinentryPackage = pkgs.pinentry-curses;
-    };
-  };
-}

modules/workstation/home-manager/ssh.nix

@@ -0,0 +1,8 @@
+{ ... }:
+{
+  services.ssh-agent.enable = true;
+  programs.ssh = {
+    enable = true;
+    forwardAgent = true;
+  };
+}