feat: configuring shell & add fish shell

modules/home/rsydn/base.nix

@@ -4,7 +4,6 @@
   imports = [
     ./programs/helix.nix
     ./programs/neovim.nix
-    ./shell/nushell.nix
     ./shell/tmux.nix
     ./devtools/ai-tools.nix
     ./devtools/languages.nix
@@ -57,7 +56,7 @@
     node.enable = true;
   };
 
-  rsydn.secrets = {
+  rsydn.secrets = lib.mkIf pkgs.stdenv.hostPlatform.isDarwin {
     enable = lib.mkDefault true;
     defaultSopsFile = ../../../secrets/local-ai-tokens.sops.yaml;
     secrets = {

modules/home/rsydn/shell/fish.nix

@@ -0,0 +1,17 @@
+{ config, pkgs, lib, ... }: {
+  imports = [ ./oh-my-posh ];
+
+  programs.fish = {
+    enable = true;
+    interactiveShellInit = ''
+      set -g fish_greeting ""
+      set -gx EDITOR nvim
+      set -gx VISUAL nvim
+    '';
+  };
+
+  programs.oh-my-posh.enableFishIntegration = lib.mkDefault true;
+
+  # Ensure fish is available for login shells on Linux hosts.
+  home.packages = lib.mkAfter [ pkgs.fish ];
+}

modules/home/rsydn/shell/nushell.nix

@@ -1,8 +1,5 @@
 { config, pkgs, lib, ... }:
 let
-  themeName = "capr4n.omp.json";
-  themeSource = ./oh-my-posh/capr4n.omp.json;
-  themeConfigPath = "${config.xdg.configHome}/oh-my-posh/${themeName}";
   profileBin = "${config.home.profileDirectory}/bin";
   systemBin = "/run/current-system/sw/bin";
   defaultBin = "/nix/var/nix/profiles/default/bin";
@@ -28,6 +25,8 @@ let
   formatPathList = paths:
     lib.concatMapStrings (path: "      \"${path}\"\n") paths;
 in {
+  imports = [ ./oh-my-posh ];
+
   programs.nushell.enable = lib.mkDefault true;
 
   programs.nushell.extraConfig = ''
@@ -115,11 +114,5 @@ in {
         load-secret "firecrawl-api-key" "FIRECRAWL_API_KEY"
   '';
 
-  programs.oh-my-posh = {
-    enable = lib.mkDefault true;
-    enableNushellIntegration = lib.mkDefault true;
-    configFile = themeConfigPath;
-  };
-
-  xdg.configFile."oh-my-posh/${themeName}".source = themeSource;
+  programs.oh-my-posh.enableNushellIntegration = lib.mkDefault true;
 }

modules/home/rsydn/shell/oh-my-posh/default.nix

@@ -0,0 +1,13 @@
+{ config, lib, ... }:
+let
+  themeName = "capr4n.omp.json";
+  themeSource = ./capr4n.omp.json;
+  themeConfigPath = "${config.xdg.configHome}/oh-my-posh/${themeName}";
+in {
+  programs.oh-my-posh = {
+    enable = lib.mkDefault true;
+    configFile = themeConfigPath;
+  };
+
+  xdg.configFile."oh-my-posh/${themeName}".source = themeSource;
+}