WIP: ADD NOTE FOR FUTURE SELF

I want to be able to re-use it between different source control systems
(e.g: `jj`).

As a first step, extract it to a proper module so that I can have it
live in a single space.

flake.lock

@@ -73,11 +73,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1738453229,
-        "narHash": "sha256-7H9XgNiGLKN1G1CgRh0vUL4AheZSYzPm+zmZ7vxbJdo=",
+        "lastModified": 1741352980,
+        "narHash": "sha256-+u2UunDA4Cl5Fci3m7S643HzKmIDAe+fiXrLqYsR2fs=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "32ea77a06711b758da0ad9bd6a844c5740a87abd",
+        "rev": "f4330d22f1c5d2ba72d3d22df5597d123fdb60a9",
         "type": "github"
       },
       "original": {
@@ -136,11 +136,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1740624780,
-        "narHash": "sha256-8TP61AI3QBQsjzVUQFIV8NoB5nbYfJB3iHczhBikDkU=",
+        "lastModified": 1741955947,
+        "narHash": "sha256-2lbURKclgKqBNm7hVRtWh0A7NrdsibD0EaWhahUVhhY=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "b8869e4ead721bbd4f0d6b927e8395705d4f16e6",
+        "rev": "4e12151c9e014e2449e0beca2c0e9534b96a26b4",
         "type": "github"
       },
       "original": {
@@ -152,11 +152,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1740560979,
-        "narHash": "sha256-Vr3Qi346M+8CjedtbyUevIGDZW8LcA1fTG0ugPY/Hic=",
+        "lastModified": 1742069588,
+        "narHash": "sha256-C7jVfohcGzdZRF6DO+ybyG/sqpo1h6bZi9T56sxLy+k=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "5135c59491985879812717f4c9fea69604e7f26f",
+        "rev": "c80f6a7e10b39afcc1894e02ef785b1ad0b0d7e5",
         "type": "github"
       },
       "original": {
@@ -177,11 +177,11 @@
         "treefmt-nix": "treefmt-nix"
       },
       "locked": {
-        "lastModified": 1740655932,
-        "narHash": "sha256-BSTcgL2C74x0TgVdVEWfIz2SHkwIFMN0Dvv1lCoOhCA=",
+        "lastModified": 1741294988,
+        "narHash": "sha256-3408u6q615kVTb23WtDriHRmCBBpwX7iau6rvfipcu4=",
         "owner": "nix-community",
         "repo": "NUR",
-        "rev": "1ca8ff37f33a560c4a292ed83774434854f0b39a",
+        "rev": "b30c245e2c44c7352a27485bfd5bc483df660f0e",
         "type": "github"
       },
       "original": {
@@ -200,11 +200,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1737465171,
-        "narHash": "sha256-R10v2hoJRLq8jcL4syVFag7nIGE7m13qO48wRIukWNg=",
+        "lastModified": 1742058297,
+        "narHash": "sha256-b4SZc6TkKw8WQQssbN5O2DaCEzmFfvSTPYHlx/SFW9Y=",
         "owner": "cachix",
         "repo": "pre-commit-hooks.nix",
-        "rev": "9364dc02281ce2d37a1f55b6e51f7c0f65a75f17",
+        "rev": "59f17850021620cd348ad2e9c0c64f4e6325ce2a",
         "type": "github"
       },
       "original": {

modules/home/default.nix

@@ -8,6 +8,7 @@
     ./bluetooth
     ./calibre
     ./comma
+    ./delta
     ./dircolors
     ./direnv
     ./discord
@@ -23,6 +24,7 @@
     ./gtk
     ./htop
     ./jq
+    ./jujutsu
     ./keyboard
     ./mail
     ./mpv

modules/home/delta/default.nix

@@ -0,0 +1,85 @@
+{ config, pkgs, lib, ... }:
+let
+  cfg = config.my.home.delta;
+in
+{
+  options.my.home.delta = with lib; {
+    enable = my.mkDisableOption "delta configuration";
+
+    package = mkPackageOption pkgs "delta" { };
+
+    git = {
+      enable = my.mkDisableOption "git integration";
+    };
+
+    jujutsu = {
+      enable = my.mkDisableOption "jujutsu integration";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    assertions = [
+      {
+        # For its configuration
+        assertion = cfg.jujutsu.enable -> cfg.git.enable;
+        message = ''
+          `config.my.home.delta.jujutsu` relies on `config.my.home.delta.git`
+          being enabled.
+        '';
+      }
+    ];
+
+    home.packages = [ cfg.package ];
+
+    programs.git = lib.mkIf cfg.git.enable {
+      delta = {
+        enable = true;
+        inherit (cfg) package;
+
+        options = {
+          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.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 ];
+          };
+        };
+
+        ui = {
+          diff = {
+            # Delta expects a `git diff` input
+            format = "git";
+          };
+
+          pager = "delta";
+        };
+      };
+    };
+  };
+}

modules/home/git/default.nix

@@ -42,34 +42,6 @@ in
 
     lfs.enable = true;
 
-    delta = {
-      enable = true;
-
-      options = {
-        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";
-        };
-      };
-    };
-
     # There's more
     extraConfig = {
       # Makes it a bit more readable

modules/home/jujutsu/default.nix

@@ -0,0 +1,112 @@
+{ 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";
+
+    # I want the full experience by default
+    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 = [ "util" "exec" "--" "jj" ];
+          # FIXME:
+          # * topo sort by default (I think? test it)
+          # * still not a big fan of the template
+          lol = [ "log" "-r" "..@" "-T" "builtin_log_oneline" ];
+          lola = [ "lol" "-r" "all()" ];
+          # 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: `extraConfig` equivalents...
+
+        # 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
+          "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";
+            };
+          }
+        ];
+      };
+    };
+  };
+}

overlays/lsp-format-nvim-indentation/default.nix

@@ -1,4 +0,0 @@
-self: prev:
-{
-  vimPlugins = prev.vimPlugins.extend (self.callPackage ./generated.nix { });
-}

overlays/lsp-format-nvim-indentation/generated.nix

@@ -1,14 +0,0 @@
-{ fetchpatch, ... }:
-
-_final: prev: {
-  lsp-format-nvim = prev.lsp-format-nvim.overrideAttrs (oa: {
-    patches = (oa.patches or [ ]) ++ [
-      # https://github.com/lukas-reineke/lsp-format.nvim/issues/94
-      (fetchpatch {
-        name = "use-effective-indentation";
-        url = "https://github.com/liskin/lsp-format.nvim/commit/3757ac443bdf5bd166673833794553229ee8d939.patch";
-        hash = "sha256-Dv+TvXrU/IrrPxz2MSPbLmRxch+qkHbI3AyFMj/ssDk=";
-      })
-    ];
-  });
-}