feat: add bat, batman and delta to common shell commands

common/modules/bash/programs.nix

@@ -1,9 +1,10 @@
-{ ... }: {
+{ pkgs, ... }: {
   programs = {
     fzf = {
       enable = true;
       enableBashIntegration = true;
     };
+
     ripgrep = {
       enable = true;
       arguments = [
@@ -16,7 +17,28 @@
         "path"
       ];
     };
+
     jq.enable = true;
     htop.enable = true;
+
+    bash.shellAliases = {
+      cat = "bat ";
+      man = "BAT_THEME='default' batman ";
+    };
+    bat = {
+      enable = true;
+      config = {
+        theme = "dracula-bat";
+      };
+      themes = {
+        dracula-bat = {
+          src = "${pkgs.dracula-theme}/bat";
+          file = "dracula-bat.tmTheme";
+        };
+      };
+      extraPackages = with pkgs.bat-extras; [
+        batman
+      ];
+    };
   };
 }

common/modules/git.nix

@@ -13,6 +13,25 @@
       includes = [
         { path = "${pkgs.dracula-theme}/git-colors"; }
       ];
+
+      delta = {
+        enable = true;
+        options = {
+          side-by-side = true;
+          line-numbers-zero-style = "#E6EDF3"; #BD93F9";
+        };
+      };
+
+      # https://github.com/dandavison/delta/issues/630#issuecomment-860046929
+      extraConfig.pager = let
+        cmd = "LESS='LRc --mouse' ${pkgs.delta}/bin/delta";
+      in {
+	      diff   = cmd;
+        show   = cmd;
+      	stash  = cmd;
+      	log    = cmd;
+      	reflog = cmd;
+      };
     };
   };
 }

common/overlays/dracula-theme.nix

@@ -15,6 +15,13 @@
     hash = "sha256-3tKjKn5IHIByj+xgi2AIL1vZANlb0vlYJsPjH6BHGxM=";
   };
 
+  bat-theme = pkgs.fetchFromGitHub {
+    owner = "matt1432";
+    repo = "bat";
+    rev = "270bce892537311ac92494a2a7663e3ecf772092";
+    hash = "sha256-UyZ3WFfrEEBjtdb//5waVItmjKorkOiNGtu9eeB3lOw=";
+  };
+
   wallpaper = pkgs.fetchurl {
     url = "https://github.com/aynp/dracula-wallpapers/blob/main/Art/4k/Waves%201.png?raw=true";
     hash = "sha256-f9FwSOSvqTeDj4bOjYUQ6TM+/carCD9o5dhg/MnP/lk=";
@@ -43,6 +50,13 @@ in {
         mkdir -p $out
         cp -a ./git-colors $out
 
+        # Bat colors
+        mkdir -p ./bat $out/bat
+        cp -a ${bat-theme}/Dracula.tmTheme ./bat/dracula-bat.tmTheme
+        chmod 777 ./bat/dracula-bat.tmTheme
+
+        cp -a ./bat/dracula-bat.tmTheme $out/bat
+
         # Plymouth
         cp -a ${plymouth}/dracula ./dracula
         chmod 777 ./dracula