WIP: home: delta: use stand-alone configuration file

Ideally, I'd like for `delta` to just read a configuration file at
`$XDG_CONFIG_HOME/delta/config` by default, but upstream seems somewhat
reticent to the idea :-/.

TODO:
* `git.enable = false` would break the standalone configuration
* using a wrapper which sets `--config` might be better than includes

flake.lock

@@ -136,11 +136,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1739790043,
-        "narHash": "sha256-4gK4zdNDQ4PyGFs7B6zp9iPIBy9E+bVJiZ0XAmncvgQ=",
+        "lastModified": 1740624780,
+        "narHash": "sha256-8TP61AI3QBQsjzVUQFIV8NoB5nbYfJB3iHczhBikDkU=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "c1ea92cdfb85bd7b0995b550581d9fd1c3370bf9",
+        "rev": "b8869e4ead721bbd4f0d6b927e8395705d4f16e6",
         "type": "github"
       },
       "original": {
@@ -152,11 +152,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1739580444,
-        "narHash": "sha256-+/bSz4EAVbqz8/HsIGLroF8aNaO8bLRL7WfACN+24g4=",
+        "lastModified": 1740560979,
+        "narHash": "sha256-Vr3Qi346M+8CjedtbyUevIGDZW8LcA1fTG0ugPY/Hic=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "8bb37161a0488b89830168b81c48aed11569cb93",
+        "rev": "5135c59491985879812717f4c9fea69604e7f26f",
         "type": "github"
       },
       "original": {
@@ -177,11 +177,11 @@
         "treefmt-nix": "treefmt-nix"
       },
       "locked": {
-        "lastModified": 1739796551,
-        "narHash": "sha256-XcTK29rOc0WxcSJDHUK8JQege9CzSVVAcjHdswOVFPA=",
+        "lastModified": 1740655932,
+        "narHash": "sha256-BSTcgL2C74x0TgVdVEWfIz2SHkwIFMN0Dvv1lCoOhCA=",
         "owner": "nix-community",
         "repo": "NUR",
-        "rev": "827aa6eeaf92cc085f84947f6c32002792b67497",
+        "rev": "1ca8ff37f33a560c4a292ed83774434854f0b39a",
         "type": "github"
       },
       "original": {

hosts/homes/ambroisie@mousqueton/default.nix

@@ -15,6 +15,9 @@
       # I use scripts that use the passthrough sequence often on this host
       enablePassthrough = true;
 
+      # Frequent reboots mean that session persistence can be handy
+      enableResurrect = true;
+
       terminalFeatures = {
         # HTerm uses `xterm-256color` as its `$TERM`, so use that here
         xterm-256color = { };

modules/home/default.nix

@@ -8,6 +8,7 @@
     ./bluetooth
     ./calibre
     ./comma
+    ./delta
     ./dircolors
     ./direnv
     ./discord

modules/home/delta/default.nix

@@ -0,0 +1,61 @@
+{ 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; {
+    enable = my.mkDisableOption "delta configuration";
+
+    package = mkPackageOption pkgs "delta" { };
+
+    git = {
+      enable = my.mkDisableOption "git integration";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    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;
+      };
+
+      includes = [
+        {
+          path = configPath;
+        }
+      ];
+    };
+  };
+}

modules/home/firefox/default.nix

@@ -61,19 +61,21 @@ in
           "ui.systemUsesDarkTheme" = true; # Dark mode
         };
 
-        extensions = with pkgs.nur.repos.rycee.firefox-addons; ([
-          bitwarden
-          consent-o-matic
-          form-history-control
-          reddit-comment-collapser
-          reddit-enhancement-suite
-          refined-github
-          sponsorblock
-          ublock-origin
-        ]
-        ++ lib.optional (cfg.tridactyl.enable) tridactyl
-        ++ lib.optional (cfg.ff2mpv.enable) ff2mpv
-        );
+        extensions = {
+          packages = with pkgs.nur.repos.rycee.firefox-addons; ([
+            bitwarden
+            consent-o-matic
+            form-history-control
+            reddit-comment-collapser
+            reddit-enhancement-suite
+            refined-github
+            sponsorblock
+            ublock-origin
+          ]
+          ++ lib.optional (cfg.tridactyl.enable) tridactyl
+          ++ lib.optional (cfg.ff2mpv.enable) ff2mpv
+          );
+        };
       };
     };
   };

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/tmux/default.nix

@@ -20,6 +20,8 @@ in
 
     enablePassthrough = mkEnableOption "tmux DCS passthrough sequence";
 
+    enableResurrect = mkEnableOption "tmux-resurrect plugin";
+
     terminalFeatures = mkOption {
       type = with types; attrsOf (submodule {
         options = {
@@ -50,8 +52,9 @@ in
     mouse = false; # I dislike mouse support
     focusEvents = true; # Report focus events
     terminal = "tmux-256color"; # I want accurate termcap info
+    aggressiveResize = true; # Automatic resize when switching client size
 
-    plugins = with pkgs.tmuxPlugins; [
+    plugins = with pkgs.tmuxPlugins; builtins.filter (attr: attr != { }) [
       # Open high-lighted files in copy mode
       open
       # Better pane management
@@ -79,6 +82,13 @@ in
           set -g status-right '#{prefix_highlight} %a %Y-%m-%d %H:%M'
         '';
       }
+      # Resurrect sessions
+      (lib.optionalAttrs cfg.enableResurrect {
+        plugin = resurrect;
+        extraConfig = ''
+          set -g @resurrect-dir '${config.xdg.stateHome}/tmux/resurrect'
+        '';
+      })
     ];
 
     extraConfig = ''

modules/home/vim/plugin/settings/oil.lua

@@ -4,6 +4,8 @@ local wk = require("which-key")
 local detail = false
 
 oil.setup({
+    -- Don't show icons
+    columns = {},
     view_options = {
         -- Show files and directories that start with "." by default
         show_hidden = true,