Git: configure Git to use libsecret

modules/system/system.nix

@@ -7,6 +7,8 @@
 }:
 let
   cfg = config.aux.system;
+
+  gitWithLibsecret = pkgs.git.override { withLibsecret = true; };
 in
 {
   options = {
@@ -27,7 +29,7 @@ in
           coreutils
           dconf
           direnv
-          git
+          gitWithLibsecret
           gnutar
           gzip
           home-manager

modules/users/aires/default.nix

@@ -72,6 +72,7 @@ in
                 push.autoSetupRemote = "true";
                 safe.directory = "${config.secrets.nixConfigFolder}/.git";
                 submodule.recurse = true;
+                credential.helper = "/run/current-system/sw/bin/git-credential-libsecret";
               };
             };