Update flake commands

flake.nix

@@ -8,21 +8,27 @@
   outputs = inputs @ { self, nixpkgs, ... }:
     inputs.flake-utils.lib.eachDefaultSystem (system:
       let pkgs = nixpkgs.legacyPackages.${system};
-          weddingSiteDir = "$HOME/.local/source/wedding-site/public/";
-          weddingSiteTgt = "ubuntu@chrishayward.xyz:/var/www/wedding";
-          weddingSiteBuild = pkgs.writeShellScriptBin "wedding-site-build" ''
-            pushd ${weddingSiteDir}../ && ${pkgs.hugo}/bin/hugo -v ; popd
+          myWeddingSiteDir = "$MY_WEDDING_SITE_DIR";
+          myWeddingSiteTgt = "ubuntu@chrishayward.xyz:/var/www/wedding";
+          myWeddingSiteBuild = pkgs.writeShellScriptBin "my-wedding-site-build" ''
+            pushd ${myWeddingSiteDir} > /dev/null &&
+            ${pkgs.hugo}/bin/hugo -v ; \
+            popd > /dev/null
           '';
-          weddingSiteUpdate = pkgs.writeShellScriptBin "wedding-site-update" ''
-            ${pkgs.rsync}/bin/rsync -aP ${weddingSiteDir} ${weddingSiteTgt}
+          myWeddingSiteUpdate = pkgs.writeShellScriptBin "my-wedding-site-update" ''
+            ${pkgs.rsync}/bin/rsync -aP ${myWeddingSiteDir} ${myWeddingSiteTgt}
           '';
       in
         rec {
           devShells.default = pkgs.mkShell {
             buildInputs = with pkgs; [
-              weddingSiteBuild
-              weddingSiteUpdate
+              myWeddingSiteBuild
+              myWeddingSiteUpdate
             ];
+
+            shellHook = ''
+              export MY_WEDDING_SITE_DIR=$(pwd)
+            '';
           };
         }
     );