add jujutsu in home manager module

flake.lock

@@ -455,6 +455,30 @@
         "type": "github"
       }
     },
+    "jj": {
+      "inputs": {
+        "flake-utils": [
+          "flake-utils"
+        ],
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "rust-overlay": "rust-overlay_2"
+      },
+      "locked": {
+        "lastModified": 1741300145,
+        "narHash": "sha256-OhHuNazHHgfDHOeqfITvBwRrtU246JJZYdx7NkIKoTc=",
+        "owner": "jj-vcs",
+        "repo": "jj",
+        "rev": "9aeb13488c10f9e4f599ee76391c2b5956ac6ae8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "jj-vcs",
+        "repo": "jj",
+        "type": "github"
+      }
+    },
     "lix": {
       "flake": false,
       "locked": {
@@ -749,6 +773,7 @@
         "ghostty": "ghostty",
         "helix": "helix",
         "home-manager": "home-manager",
+        "jj": "jj",
         "lix-module": "lix-module",
         "niri-flake": "niri-flake",
         "nixos-cosmic": "nixos-cosmic",
@@ -785,6 +810,27 @@
         "type": "github"
       }
     },
+    "rust-overlay_2": {
+      "inputs": {
+        "nixpkgs": [
+          "jj",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1737685583,
+        "narHash": "sha256-p+NVABRpGi+pT+xxf9HcLcFVxG6L+vEEy+NwzB9T0f8=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "eb64cbcc8eee0fa87ebded92805280d2ec97415a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
     "sops-nix": {
       "inputs": {
         "nixpkgs": [

flake.nix

@@ -156,6 +156,16 @@
         utils.follows = "flake-utils";
       };
     };
+
+    jj = {
+      type = "github";
+      owner = "jj-vcs";
+      repo = "jj";
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+        flake-utils.follows = "flake-utils";
+      };
+    };
   };
   outputs =
     {

home/david/configurations/Tytonidae/default.nix

@@ -21,6 +21,12 @@
       fuzzel.enable = true;
       helix.enable = true;
       gpg.enable = true;
+      jujutsu = {
+        enable = true;
+        email = "ulic.youthlic@gmail.com";
+        name = "ulic-youthlic";
+        signKey = "C6FCBD7F49E1CBBABD6661F7FC02063F04331A95";
+      };
       git = {
         email = "ulic.youthlic@gmail.com";
         name = "ulic-youthlic";

home/modules/programs/default.nix

@@ -24,5 +24,6 @@
     ./swaync.nix
     ./helix
     ./waybar.nix
+    ./jujutsu.nix
   ];
 }

home/modules/programs/jujutsu.nix

@@ -0,0 +1,104 @@
+{
+  pkgs,
+  config,
+  lib,
+  ...
+}:
+let
+  cfg = config.youthlic.programs.jujutsu;
+in
+{
+  options = {
+    youthlic.programs.jujutsu = {
+      enable = lib.mkEnableOption "jujutsu";
+      email = lib.mkOption {
+        type = lib.types.str;
+        description = ''
+          jujutsu email
+        '';
+      };
+      signKey = lib.mkOption {
+        type = lib.types.addCheck (lib.types.nullOr lib.types.str) (
+          x: (x == null || config.youthlic.programs.gpg.enable)
+        );
+        default = null;
+        description = ''
+          key fingerprint for sign commit
+        '';
+      };
+      name = lib.mkOption {
+        type = lib.types.str;
+        example = ''youthlic'';
+        description = ''
+          jujutsu name
+        '';
+      };
+    };
+  };
+  config = lib.mkMerge [
+    (lib.mkIf cfg.enable {
+      home.packages = with pkgs; [
+        delta
+        watchman
+      ];
+      programs.jujutsu = {
+        enable = true;
+        settings = {
+          "$schema" = "https://jj-vcs.github.io/jj/latest/config-schema.json";
+          snapshot = {
+            auto-track = "true";
+            max-new-file-size = 0;
+          };
+          core = {
+            fsmonitor = "watchman";
+            watchman.register-snapshot-trigger = true;
+          };
+          user = {
+            name = cfg.name;
+            email = cfg.email;
+          };
+          ui = {
+            color = "auto";
+            movement.edit = true;
+            graph.style = "square";
+            show-cryptographic-signatures = true;
+            pager = "delta";
+            diff = {
+              tool = "delta";
+              format = "git";
+            };
+            default-command = "log";
+          };
+          templates = {
+            log = ''
+              builtin_log_compact_full_description
+            '';
+          };
+          template-aliases = {
+            "format_short_signature(signature)" = "signature";
+          };
+          revset-aliases = {
+            "immutable_heads()" = ''
+              builtin_immutable_heads() | (trunk().. & ~mine())
+            '';
+          };
+          git = {
+            abandon-unreachable-commits = false;
+          };
+        };
+      };
+    })
+    (lib.mkIf (cfg.enable && (cfg.signKey != null)) {
+      programs.jujutsu.settings = {
+        git = {
+          sign-on-push = true;
+        };
+        signing = {
+          behavior = "drop";
+          backend = "gpg";
+          key = cfg.signKey;
+        };
+      };
+    })
+  ];
+}

overlays/modifications/default.nix

@@ -8,6 +8,7 @@ let
     ./ghostty.nix
     ./juicity.nix
     ./dae.nix
+    ./jujutsu.nix
   ];
   overlay-list = map (file: import file args) overlay-files;
 in

overlays/modifications/jujutsu.nix

@@ -0,0 +1 @@
+{ inputs, ... }: inputs.jj.overlays.default