WIP: use system jujutsu for work

This is to serve as a reminder of _how_ to add a local configuration
file.

flake.lock

@@ -73,11 +73,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1754487366,
-        "narHash": "sha256-pHYj8gUBapuUzKV/kN/tR3Zvqc7o6gdFB9XKXIp1SQ8=",
+        "lastModified": 1756770412,
+        "narHash": "sha256-+uWLQZccFHwqpGqr2Yt5VsW/PbeJVTn9Dk6SHWhNRPw=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "af66ad14b28a127c5c0f3bbb298218fc63528a18",
+        "rev": "4524271976b625a4a605beefd893f270620fd751",
         "type": "github"
       },
       "original": {
@@ -117,11 +117,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1755446520,
-        "narHash": "sha256-I0Ok1OGDwc1jPd8cs2VvAYZsHriUVFGIUqW+7uSsOUM=",
+        "lastModified": 1755960406,
+        "narHash": "sha256-RF7j6C1TmSTK9tYWO6CdEMtg6XZaUKcvZwOCD2SICZs=",
         "owner": "cachix",
         "repo": "git-hooks.nix",
-        "rev": "4b04db83821b819bbbe32ed0a025b31e7971f22e",
+        "rev": "e891a93b193fcaf2fc8012d890dc7f0befe86ec2",
         "type": "github"
       },
       "original": {
@@ -159,11 +159,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1755491080,
-        "narHash": "sha256-ib1Xi13NEalrFqQAHceRsb+6aIPANFuQq80SS/bY10M=",
+        "lastModified": 1756954499,
+        "narHash": "sha256-Pg4xBHzvzNY8l9x/rLWoJMnIR8ebG+xeU+IyqThIkqU=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "f8af2cbe386f9b96dd9efa57ab15a09377f38f4d",
+        "rev": "ed1a98c375450dfccf427adacd2bfd1a7b22eb25",
         "type": "github"
       },
       "original": {
@@ -175,11 +175,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1755186698,
-        "narHash": "sha256-wNO3+Ks2jZJ4nTHMuks+cxAiVBGNuEBXsT29Bz6HASo=",
+        "lastModified": 1756936398,
+        "narHash": "sha256-/o1TTpMIICpjrMHBilL9lYm/r69uhdK1L8j1pfY6tWU=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "fbcf476f790d8a217c3eab4e12033dc4a0f6d23c",
+        "rev": "47f28ad9378956563df9a884fd1b209b64336ba3",
         "type": "github"
       },
       "original": {

hosts/homes/ambroisie@bazin/default.nix

@@ -22,6 +22,10 @@
       package = pkgs.emptyDirectory;
     };
 
+    jujutsu = {
+      package = pkgs.emptyDirectory;
+    };
+
     tmux = {
       # I use scripts that use the passthrough sequence often on this host
       enablePassthrough = true;

hosts/homes/ambroisie@mousqueton/default.nix

@@ -25,6 +25,10 @@
       package = pkgs.emptyDirectory;
     };
 
+    jujutsu = {
+      package = pkgs.emptyDirectory;
+    };
+
     tmux = {
       # I use scripts that use the passthrough sequence often on this host
       enablePassthrough = true;

hosts/nixos/aramis/home.nix

@@ -18,9 +18,7 @@
     # Machine specific packages
     packages.additionalPackages = with pkgs; [
       element-desktop # Matrix client
-      jellyfin-media-player # Wraps the webui and mpv together
       pavucontrol # Audio mixer GUI
-      trgui-ng # Transmission remote
     ];
     # Minimal video player
     mpv.enable = true;
@@ -28,6 +26,8 @@
     nm-applet.enable = true;
     # Terminal
     terminal.program = "alacritty";
+    # Transmission remote
+    trgui.enable = true;
     # Zathura document viewer
     zathura.enable = true;
   };

modules/home/default.nix

@@ -24,6 +24,7 @@
     ./gtk
     ./htop
     ./jq
+    ./jujutsu
     ./keyboard
     ./mail
     ./mpv
@@ -38,6 +39,7 @@
     ./ssh
     ./terminal
     ./tmux
+    ./trgui
     ./udiskie
     ./vim
     ./wget

modules/home/delta/default.nix

@@ -1,6 +1,9 @@
 { config, pkgs, lib, ... }:
 let
   cfg = config.my.home.delta;
+
+  configFormat = pkgs.formats.gitIni { };
+  configPath = "${config.xdg.configHome}/delta/config";
 in
 {
   options.my.home.delta = with lib; {
@@ -11,6 +14,10 @@ in
     git = {
       enable = my.mkDisableOption "git integration";
     };
+
+    jujutsu = {
+      enable = my.mkDisableOption "jujutsu integration";
+    };
   };
 
   config = lib.mkIf cfg.enable {
@@ -34,33 +41,59 @@ in
 
     home.packages = [ cfg.package ];
 
+    xdg.configFile."delta/config".source = configFormat.generate "delta-config" {
+      delta = {
+        features = "diff-highlight decorations";
+
+        # Less jarring style for `diff-highlight` emulation
+        diff-highlight = {
+          minus-style = "red";
+          minus-non-emph-style = "red";
+          minus-emph-style = "bold red 52";
+
+          plus-style = "green";
+          plus-non-emph-style = "green";
+          plus-emph-style = "bold green 22";
+
+          whitespace-error-style = "reverse red";
+        };
+
+        # Personal preference for easier reading
+        decorations = {
+          commit-style = "raw"; # Do not recolor meta information
+          keep-plus-minus-markers = true;
+          paging = "always";
+        };
+      };
+    };
+
     programs.git = lib.mkIf cfg.git.enable {
       delta = {
         enable = true;
         inherit (cfg) package;
+      };
 
-        options = {
-          features = "diff-highlight decorations";
+      includes = [
+        {
+          path = configPath;
+        }
+      ];
+    };
 
-          # Less jarring style for `diff-highlight` emulation
-          diff-highlight = {
-            minus-style = "red";
-            minus-non-emph-style = "red";
-            minus-emph-style = "bold red 52";
-
-            plus-style = "green";
-            plus-non-emph-style = "green";
-            plus-emph-style = "bold green 22";
-
-            whitespace-error-style = "reverse red";
+    programs.jujutsu = lib.mkIf cfg.jujutsu.enable {
+      settings = {
+        merge-tools = {
+          delta = {
+            # Errors are signaled with exit codes greater or equal to 2
+            diff-expected-exit-codes = [ 0 1 ];
           };
+        };
 
-          # Personal preference for easier reading
-          decorations = {
-            commit-style = "raw"; # Do not recolor meta information
-            keep-plus-minus-markers = true;
-            paging = "always";
-          };
+        ui = {
+          # Delta expects a `git diff` input
+          diff-formatter = ":git";
+
+          pager = [ (lib.getExe cfg.package) "--config=${configPath}" ];
         };
       };
     };

modules/home/jujutsu/default.nix

@@ -0,0 +1,130 @@
+{ config, pkgs, lib, ... }:
+let
+  cfg = config.my.home.jujutsu;
+
+  inherit (lib.my) mkMailAddress;
+in
+{
+  options.my.home.jujutsu = with lib; {
+    enable = my.mkDisableOption "jujutsu configuration";
+
+    package = mkPackageOption pkgs "jujutsu" { };
+  };
+
+  config = lib.mkIf cfg.enable {
+    assertions = [
+      {
+        # For `jj git` commands
+        assertion = cfg.enable -> config.my.home.git.enable;
+        message = ''
+          `config.my.home.jujutsu` relies on `config.my.home.git` being enabled.
+        '';
+      }
+    ];
+
+    programs.jujutsu = {
+      enable = true;
+
+      inherit (cfg) package;
+
+      settings = {
+        # Who am I?
+        user = {
+          name = "Bruno BELANYI";
+          email = mkMailAddress "bruno" "belanyi.fr";
+        };
+
+        aliases = {
+          jj = [ ];
+          # FIXME:
+          # * still not a big fan of the template
+          lol = [ "log" "-r" "..@" "-T" "builtin_log_oneline" ];
+          lola = [ "lol" "-r" "all()" ];
+          # FIXME: equivalent to `git switch -`
+          # See https://github.com/jj-vcs/jj/issues/2871
+          # Might be broken recently https://discord.com/channels/968932220549103686/1380272574709366989/1380432041983606855
+          # TODO:
+          # * `pick` (https://github.com/jj-vcs/jj/issues/5446): [ "util" "exec" "--" "bash" "-c" "jj log -p -r \"diff_contains($1)\"" "" ]
+          # * `root`: `jj workspace root` (barely necessary then)
+        };
+
+        # FIXME: git equivalents
+        # blame = {
+        #   coloring = "repeatedLines";
+        #   markIgnoredLines = true;
+        #   markUnblamables = true;
+        # };
+        # FIXME: log colors should probably match git
+        # FIXME: patience diff?
+        # FIXME: fetch prune/pruneTags?
+        # FIXME: pull.rebase=true? Probably true TBH
+        # FIXME: push.default=simple? Probably true TBH
+        # FIXME: conflict style? ui.conflict-marker-style=git is diff3, not zdiff3. Default looks fine-ish
+
+        # FIXME: from ma_9's config, plus my own stuff
+        # snapshot = {
+        #   auto-track = "none()";
+        # };
+        #
+        # ui = {
+        #   diff-editor = ":builtin"; # To silence hints
+        #   movement = {
+        #     edit = false;
+        #   };
+        # };
+
+        templates = {
+          # Equivalent to `commit.verbose = true` in Git
+          draft_commit_description = "commit_description_verbose(self)";
+        };
+
+        template-aliases = {
+          "commit_description_verbose(commit)" = ''
+            concat(
+              commit_description(commit),
+              "JJ: ignore-rest\n",
+              diff.git(),
+            )
+          '';
+          # FIXME: use `diff.summary()` instead? Supported by syntax highlighting
+          # See https://github.com/jj-vcs/jj/issues/1946#issuecomment-2572986485
+          # FIXME: tree-sitter grammar isn't in `nvim-treesitter` (https://github.com/kareigu/tree-sitter-jjdescription)
+          "commit_description(commit)" = ''
+            concat(
+              commit.description(), "\n",
+              "JJ: This commit contains the following changes:\n",
+              indent("JJ:    ", diff.stat(72)),
+            )
+          '';
+        };
+
+        "--scope" = [
+          # Multiple identities
+          {
+            "--when" = {
+              repositories = [ "~/git/EPITA/" ];
+            };
+            user = {
+              name = "Bruno BELANYI";
+              email = mkMailAddress "bruno.belanyi" "epita.fr";
+            };
+          }
+          {
+            "--when" = {
+              repositories = [ "~/git/work/" ];
+            };
+            user = {
+              name = "Bruno BELANYI";
+              email = mkMailAddress "ambroisie" "google.com";
+            };
+          }
+        ];
+      };
+    };
+
+    # To drop in a `local.toml` configuration, not-versioned
+    xdg.configFile = {
+      "jj/conf.d/.keep".text = "";
+    };
+  };
+}

modules/home/nix/default.nix

@@ -69,7 +69,7 @@ in
         automatic = true;
 
         # Every week, with some wiggle room
-        frequency = "weekly";
+        dates = "weekly";
         randomizedDelaySec = "10min";
 
         # Use a persistent timer for e.g: laptops

modules/home/ssh/default.nix

@@ -17,6 +17,7 @@ in
     {
       programs.ssh = {
         enable = true;
+        enableDefaultConfig = false;
 
         includes = [
           # Local configuration, not-versioned
@@ -53,11 +54,12 @@ in
             identityFile = "~/.ssh/shared_rsa";
             user = "ambroisie";
           };
-        };
 
-        extraConfig = ''
-          AddKeysToAgent yes
-        '';
+          # `*` is automatically made the last match block by the module
+          "*" = {
+            addKeysToAgent = "yes";
+          };
+        };
       };
     }
 

modules/home/trgui/default.nix

@@ -0,0 +1,17 @@
+{ config, lib, pkgs, ... }:
+let
+  cfg = config.my.home.trgui;
+in
+{
+  options.my.home.trgui = with lib; {
+    enable = mkEnableOption "Transmission GUI onfiguration";
+
+    package = mkPackageOption pkgs "TrguiNG" { default = "trgui-ng"; };
+  };
+
+  config = lib.mkIf cfg.enable {
+    home.packages = with pkgs; [
+      cfg.package
+    ];
+  };
+}

modules/nixos/profiles/x/default.nix

@@ -13,7 +13,7 @@ in
     # Nice wallpaper
     services.xserver.displayManager.lightdm.background =
       let
-        wallpapers = "${pkgs.plasma5Packages.plasma-workspace-wallpapers}/share/wallpapers";
+        wallpapers = "${pkgs.kdePackages.plasma-workspace-wallpapers}/share/wallpapers";
       in
       "${wallpapers}/summer_1am/contents/images/2560x1600.jpg";