feat(nix): enable experimental pipe-operators

hosts/luna/modules/nix.nix

@@ -3,6 +3,7 @@
   nix = {
     settings = {
       experimental-features = [
+        "pipe-operators"
         "nix-command"
         "flakes"
       ];
@@ -15,4 +16,4 @@
       dates = "daily";
     };
   };
-}
+}

hosts/luna/modules/services/gitea.nix

@@ -31,6 +31,7 @@ let
       ];
       # allow using the new flake commands in our workflows
       experimental-features = [
+        "pipe-operators"
         "nix-command"
         "flakes"
       ];

hosts/orion/modules/nix.nix

@@ -7,6 +7,7 @@
     nixPath = [ "nixpkgs=${inputs.nixpkgs}" ];
     settings = {
       experimental-features = [
+        "pipe-operators"
         "nix-command"
         "flakes"
       ];
@@ -28,4 +29,4 @@
       options = "--delete-older-than 7d";
     };
   };
-}
+}

users/price/conf/nix/default.nix

@@ -7,6 +7,7 @@
     };
     settings = {
       experimental-features = [
+        "pipe-operators"
         "nix-command"
         "flakes"
       ];