wip: modularize home-manager

modules/home-manager/fish.nix

@@ -0,0 +1,72 @@
+{ config, pkgs, lib, ... }: 
+
+with lib;
+
+let
+  cfg = config.custom-hm.fish;
+in
+{
+  options = {
+    enable = mkEnableOption "fish";
+    plugins = mkOption {
+      type = types.listOf types.str;
+      default = [ "pisces" "done" "hydro" ];
+    };
+    functions = {
+      enable = mkOption {
+        type = types.bool;
+        default = true;
+      };
+    };
+    alias = {
+      enable = mkOption {
+        type = types.bool;
+        default = true;
+      };
+    };
+  };
+
+  config = {
+    programs.fish = mkIf cfg.enable {
+      enable = true;
+      plugins = with pkgs; filter (
+        e: hasAttr e.name builtins.listToAttrs # { "xxx" = true; }
+           (map (p: { name = p; value = true; }) cfg.plugins) # { name = "xxx"; value = true; }
+        ) [
+        {
+          name = "pisces";
+          src = fishPlugins.pisces.src;
+        }
+        {
+          name = "done";
+          src = fishPlugins.done.src;
+        }
+        {
+          name = "hydro";
+          src = fishPlugins.hydro.src;
+        }
+      ];
+      interactiveShellInit = let
+        extraInit = if cfg.functions.enable then ''
+          ${pkgs.nix-your-shell}/bin/nix-your-shell fish | source
+          function fish_right_prompt
+            if test -n "$IN_NIX_SHELL"
+              echo -n "<nix-shell>"
+            else if test $SHLVL -ge 3
+              echo -n "<🚀lv$SHLVL>"
+            end
+          end
+          function fish_command_not_found
+            ${pkgs.comma}/bin/comma $argv
+          end
+        '' else "";
+      in ''
+        fish_config theme choose 'ayu Dark'
+        fish_config prompt choose arrow
+      '' + extraInit;
+      functions = mkIf cfg.functions.enable {
+        gitignore = "curl -sL https://www.gitignore.io/api/$argv";
+      };
+    };
+  };
+}