Commit b0cdba8

@@ -0,0 +1,50 @@
+{lib, ...}: {
+  den.aspects.core.shell.atuin = {
+    includes = [
+      ({user, ...}: {
+        persistUser = {
+          directories = lib.optional (!(lib.elem "homeManager" user.classes)) ".local/share/atuin";
+        };
+        persistHome = {config, ...}: {
+          directories = ["${config.xdg.dataHome}/atuin"];
+        };
+      })
+    ];
+
+    nixos = {
+      programs.atuin = {
+        enable = true;
+        settings = {
+          style = "full";
+          inline_height = 32;
+          keymap_mode = "vim-normal";
+        };
+      };
+    };
+
+    homeManager = {
+      programs.atuin = {
+        enable = true;
+        enableBashIntegration = true;
+        enableFishIntegration = true;
+      };
+    };
+  };
+
+  den.aspects.core.shell.atuin.themes = {
+    catppuccin = {
+      homeManager = {pkgs, ...}: {
+        programs.atuin = {
+          settings.theme.name = "catppuccin-mocha-mauve";
+        };
+
+        xdg.configFile = {
+          "atuin/themes/catppuccin-mocha-mauve.toml".source = pkgs.fetchurl {
+            url = "https://github.com/catppuccin/atuin/raw/68aa64b77573c235044b614e752a781701af4eec/themes/mocha/catppuccin-mocha-mauve.toml";
+            hash = "sha256-X66L7YmWQ4ClPeQoFhXkkWXPrmpLwWfHcDNbvnc+K3g=";
+          };
+        };
+      };
+    };
+  };
+}

@@ -0,0 +1,17 @@
+{
+  den.aspects.core.shell.bash = {
+    nixos = {
+      programs.bash = {
+        enable = true;
+        completion.enable = true;
+      };
+    };
+
+    homeManager = {
+      programs.bash = {
+        enable = true;
+        enableCompletion = true;
+      };
+    };
+  };
+}

@@ -0,0 +1,77 @@
+{lib, ...}: {
+  den.aspects.core.shell.fish = {
+    includes = [
+      ({user, ...}: {
+        persistUser = {
+          files = lib.optional (!(lib.elem "homeManager" user.classes)) ".local/share/fish/fish_history";
+        };
+        persistHome = {config, ...}: {
+          files = ["${config.xdg.dataHome}/fish/fish_history"];
+        };
+      })
+    ];
+
+    nixos = {
+      programs.fish = {
+        enable = true;
+        useBabelfish = true;
+
+        shellInit = ''
+          set -U fish_greeting
+        '';
+      };
+    };
+
+    homeManager = {pkgs, ...}: {
+      programs.fish = {
+        enable = true;
+        generateCompletions = true;
+        plugins = with pkgs.fishPlugins; [
+          {
+            inherit (puffer) src;
+            name = "puffer";
+          }
+          {
+            inherit (autopair) src;
+            name = "autopair";
+          }
+        ];
+
+        shellInit = ''
+          set -U fish_greeting
+        '';
+      };
+    };
+  };
+
+  den.aspects.core.shell.fish.themes = {
+    catppuccin = {
+      homeManager = {pkgs, ...}: {
+        programs.fish = {
+          shellInit = ''
+            fish_config theme choose catppuccin-mocha
+          '';
+        };
+        xdg.configFile."fish/themes/catppuccin-mocha.theme".source = pkgs.fetchurl {
+          pname = "fish-theme-catppuccin-mocha.theme";
+          url = "https://github.com/catppuccin/fish/raw/5fc5ae9c2ec22eb376cb03ce76f0d262a38960f3/themes/static/catppuccin-mocha.theme";
+          hash = "sha256-sAn4eJy6tmloWbN0p+mBdku3CK5TUeKVtVsaH/CBnGk=";
+        };
+      };
+    };
+  };
+
+  den.aspects.core.shell.fish.bashOverlay = {
+    nixos = {config, ...}: {
+      programs.bash = {
+        interactiveShellInit = ''
+          # "check if parent process is not fish" && "make nested shells work properly"
+          if grep -qv fish /proc/$PPID/comm && [[ $SHLVL == [12] ]]; then
+              # set $SHELL for better integration with programs like nix shell, tmux, etc.
+              SHELL=${config.programs.fish.package}/bin/fish exec fish
+          fi
+        '';
+      };
+    };
+  };
+}

@@ -0,0 +1,11 @@
+{
+  den.aspects.core.shell.starship = {
+    nixos = {
+      programs.starship = {
+        enable = true;
+        interactiveOnly = true;
+        presets = ["pure-preset"];
+      };
+    };
+  };
+}

@@ -13,6 +13,11 @@
       core.hardware.graphic.nvidia
       core.hardware.thunderbolt
 
+      core.shell.bash
+      core.shell.fish
+      core.shell.atuin
+      core.shell.starship
+
       core.editor
       core.impermanence
       core.localization

@@ -4,6 +4,8 @@
       [
         den.batteries.host-aspects
         den.batteries.primary-user
+
+        den.aspects.core.shell.fish.bashOverlay
       ]
       ++ (den.lib.policy.when
         ({host, ...}: host.hasAspect den.aspects.roles.develop)