add kak-pager and diffr

user/git.nix

@@ -0,0 +1,34 @@
+{ config, pkgs, lib, ... }:
+let inherit (import ./variables.nix) username mail;
+in {
+  config = {
+    programs.git = {
+      enable = true;
+      extraConfig = {
+        user = {
+          name = username;
+          email = mail.personal.user;
+        };
+        init.defaultBranch = "main";
+        commit.verbose = true;
+        pull.rebase = true;
+        merge.conflictStyle = "diff3";
+        rerere.enabled = true;
+        rebase = {
+          abbreviateCommands = true;
+          autoSquash = true;
+          autoStash = true;
+        };
+        pager = {
+          log = "${pkgs._diffr}/bin/diffr | ${pkgs.kak-pager}/bin/kak-pager";
+          show = "${pkgs._diffr}/bin/diffr | ${pkgs.kak-pager}/bin/kak-pager";
+          diff = "${pkgs._diffr}/bin/diffr | ${pkgs.kak-pager}/bin/kak-pager";
+        };
+        alias = {
+          graph = "log --graph --oneline --all";
+          root = "rev-parse --show-toplevel";
+        };
+      };
+    };
+  };
+}