refactor ssh daemon

scripts/shell.nix

@@ -0,0 +1,27 @@
+{ pkgs ? import <nixpkgs> { } }:
+
+pkgs.mkShell {
+  buildInputs = [
+    (pkgs.boxes.overrideAttrs (old: rec {
+      version = "2.3.0";
+      src = pkgs.fetchFromGitHub {
+        owner = "ascii-boxes";
+        repo = "boxes";
+        rev = "v${version}";
+        sha256 = "sha256-/gc/5vDflmEwOtQbtLwRcchyr22rLQcWqs5GrwRxY70=";
+      };
+      #nativeBuildInputs = old.nativeBuildInputs ++ [
+      nativeBuildInputs = [
+        pkgs.libunistring
+        pkgs.pcre2
+        pkgs.ncurses
+      ];
+      installPhase = ''
+        find . -type f
+        install -Dm755 -t $out/bin out/boxes
+        install -Dm644 -t $out/share/boxes boxes-config
+        install -Dm644 -t $out/share/man/man1 doc/boxes.1
+      '';
+    }))
+  ];
+}