Add now and hnow scripts

Based on ones in https://github.com/rwxrob/dot.

modules/scripts/hnow.nix

@@ -0,0 +1,35 @@
+{ lib, withSystem, ... }:
+
+let
+  name = "hnow";
+in
+{
+  perSystem =
+    psArgs@{ pkgs, ... }:
+    let
+      now = withSystem pkgs.system (psArgs: psArgs.config.packages.now);
+    in
+    {
+      packages.${name} = pkgs.writeShellApplication {
+        inherit name;
+
+        runtimeInputs = [
+          psArgs.config.packages.now
+        ];
+
+        text = ''
+          # Based on https://github.com/rwxrob/dot/blob/main/scripts/hnow.
+
+          echo "== $(${lib.getExe now})"
+        '';
+      };
+    };
+
+  flake.modules.homeManager.base =
+    { pkgs, ... }:
+    {
+      home.packages = [
+        (withSystem pkgs.system (psArgs: psArgs.config.packages.${name}))
+      ];
+    };
+}

modules/scripts/now.nix

@@ -0,0 +1,32 @@
+{  withSystem, ... }:
+
+let
+  name = "now";
+in
+{
+  perSystem =
+    { pkgs, ... }:
+    {
+      packages.${name} = pkgs.writeShellApplication {
+        inherit name;
+
+        runtimeInputs = with pkgs; [ coreutils ];
+
+        text = ''
+          # Based on https://github.com/rwxrob/dot/blob/main/scripts/now.
+
+          out=$(date "+%A, %B %e, %Y, %R %Z")
+
+          echo "''${out//  / }"
+        '';
+      };
+    };
+
+  flake.modules.homeManager.base =
+    { pkgs, ... }:
+    {
+      home.packages = [
+        (withSystem pkgs.system (psArgs: psArgs.config.packages.${name}))
+      ];
+    };
+}