Unify package config and import

modules/papis.nix

@@ -1,6 +1,8 @@
 { pkgs, lib, ... }:
 
 {
+  # Install papis package
+  home.packages = [ pkgs.papis ];
   # Papis configuration
   home.file.${if pkgs.stdenv.isDarwin then "Library/Application Support/papis/config" else ".config/papis/config"}.text = ''
     [settings]

modules/rsync.nix

@@ -1,6 +1,8 @@
 { config, pkgs, lib, ... }:
 
 {
+  # Install rsync package
+  home.packages = [ pkgs.rsync ];
   # Rsync exclude patterns for common files and directories
   home.file.".rsync-exclude".text = ''
     # macOS specific

modules/termscp.nix

@@ -1,6 +1,8 @@
 { config, pkgs, lib, ... }:
 
 {
+  # Install termscp package
+  home.packages = [ pkgs.termscp ];
   home.file.${if pkgs.stdenv.isDarwin then "Library/Application Support/termscp/config.toml" else ".config/termscp/config.toml"}.text = ''
     # termscp configuration file
     # Generated by Nix - see modules/termscp.nix for customization