feat: nixx and nixi commands/packages

modules/home-manager/packages/nixi.nix

@@ -0,0 +1,18 @@
+{ pkgs, ... }:
+
+let
+  nixi = pkgs.writeShellScriptBin "nixi" ''
+    # npm-like command for nix
+    function nix-shell() {
+      local pkg="$1"
+      nix shell "nixpkgs#$pkg"
+    }
+    nix-shell $1
+  '';
+in
+{
+  home.packages = [
+    nixi
+  ];
+}
+

modules/home-manager/packages/nixx.nix

@@ -0,0 +1,18 @@
+{ pkgs, ... }:
+
+let
+  nixx = pkgs.writeShellScriptBin "nixx" ''
+    # npx-like command for nix
+    function nix-run() {
+      local pkg="$1"
+        nix run "nixpkgs#$pkg"
+    }
+    nix-run $1
+  '';
+in
+{
+  home.packages = [
+    nixx
+  ];
+}
+