diff --git a/pkgs/by-name/st/stardust-xr-kiara/package.nix b/pkgs/by-name/st/stardust-xr-kiara/package.nix
deleted file mode 100644
index 56c18ed807f3..000000000000
--- a/pkgs/by-name/st/stardust-xr-kiara/package.nix
+++ /dev/null
@@ -1,59 +0,0 @@
-{
-  lib,
-  fetchFromGitHub,
-  rustPlatform,
-  makeBinaryWrapper,
-  niri,
-  stardust-xr-kiara,
-  testers,
-  nix-update-script,
-}:
-
-rustPlatform.buildRustPackage (finalAttrs: {
-  pname = "stardust-xr-kiara";
-  version = "0-unstable-2024-07-13";
-
-  src = fetchFromGitHub {
-    owner = "stardustxr";
-    repo = "kiara";
-    rev = "186b00a460c9dd8179f9af42fb9a420506ac3aff";
-    hash = "sha256-e89/x66S+MpJFtqat1hYEyRVUYFjef62LDN2hQPjNVw=";
-  };
-
-  cargoHash = "sha256-C1eD974cEGbo0vHJqdnCPUopDPDDa6hAFJdzSm8t618=";
-
-  nativeBuildInputs = [ makeBinaryWrapper ];
-
-  passthru = {
-    updateScript = nix-update-script { extraArgs = [ "--version=branch" ]; };
-    tests.helpTest = testers.runCommand {
-      name = "stardust-xr-kiara";
-      script = ''
-        kiara --help
-        touch $out
-      '';
-      nativeBuildInputs = [ stardust-xr-kiara ];
-    };
-  };
-
-  postInstall = ''
-    wrapProgram $out/bin/kiara --prefix PATH : ${niri}/bin
-  '';
-
-  env = {
-    NIRI_CONFIG = "${finalAttrs.src}/src/niri_config.kdl";
-    STARDUST_RES_PREFIXES = "${finalAttrs.src}/res";
-  };
-
-  meta = {
-    description = "360-degree app shell / DE for Stardust XR using Niri";
-    homepage = "https://stardustxr.org/";
-    license = lib.licenses.mit;
-    mainProgram = "kiara";
-    maintainers = with lib.maintainers; [
-      pandapip1
-      technobaboo
-    ];
-    platforms = lib.platforms.linux;
-  };
-})
diff --git a/pkgs/by-name/st/stardust-xr-magnetar/package.nix b/pkgs/by-name/st/stardust-xr-magnetar/package.nix
deleted file mode 100644
index fbd3f5bee2df..000000000000
--- a/pkgs/by-name/st/stardust-xr-magnetar/package.nix
+++ /dev/null
@@ -1,36 +0,0 @@
-{
-  lib,
-  fetchFromGitHub,
-  rustPlatform,
-  nix-update-script,
-}:
-
-rustPlatform.buildRustPackage {
-  pname = "stardust-xr-magnetar";
-  version = "0-unstable-2025-04-03";
-
-  src = fetchFromGitHub {
-    owner = "stardustxr";
-    repo = "magnetar";
-    rev = "63ff648bb64c23023a0047ea3ff2c0b6b1fd3caf";
-    hash = "sha256-LRI3HKuOUfUb93mHB8DUpp0hvES+GbzsKAxpkLCLzKQ=";
-  };
-
-  cargoHash = "sha256-ixzasTQDVVU8cGhSW3j8ELJmmYudwfnYQEIoULLQRyo=";
-
-  passthru.updateScript = nix-update-script {
-    extraArgs = [ "--version=branch" ];
-  };
-
-  meta = {
-    description = "Workspaces client for Stardust";
-    homepage = "https://stardustxr.org";
-    license = lib.licenses.mit;
-    mainProgram = "magnetar";
-    maintainers = with lib.maintainers; [
-      pandapip1
-      technobaboo
-    ];
-    platforms = lib.platforms.linux;
-  };
-}
diff --git a/pkgs/by-name/st/stardust-xr-phobetor/package.nix b/pkgs/by-name/st/stardust-xr-phobetor/package.nix
deleted file mode 100644
index d590df979790..000000000000
--- a/pkgs/by-name/st/stardust-xr-phobetor/package.nix
+++ /dev/null
@@ -1,38 +0,0 @@
-{
-  lib,
-  fetchFromGitHub,
-  rustPlatform,
-  nix-update-script,
-}:
-
-rustPlatform.buildRustPackage (finalAttrs: {
-  pname = "stardust-xr-phobetor";
-  version = "0-unstable-2024-02-10";
-
-  src = fetchFromGitHub {
-    owner = "stardustxr";
-    repo = "phobetor";
-    rev = "f47d10c9ab8b37941bc9ca94677d6c80332376f3";
-    hash = "sha256-7CWOoirQ/8zKCO7lBA9snyShlwsKYONiYkl39lQrpTY=";
-  };
-
-  env.STARDUST_RES_PREFIXES = "${finalAttrs.src}/res";
-
-  cargoHash = "sha256-H65uAHMAIkJ9D5q/5HxMEbvcfoRhYdFgTQejp6bvu5w=";
-
-  passthru.updateScript = nix-update-script {
-    extraArgs = [ "--version=branch" ];
-  };
-
-  meta = {
-    description = "Handheld panel shell for Stardust XR";
-    homepage = "https://stardustxr.org";
-    license = lib.licenses.mit;
-    mainProgram = "phobetor";
-    maintainers = with lib.maintainers; [
-      pandapip1
-      technobaboo
-    ];
-    platforms = lib.platforms.linux;
-  };
-})
diff --git a/pkgs/by-name/st/stardust-xr-sphereland/package.nix b/pkgs/by-name/st/stardust-xr-sphereland/package.nix
deleted file mode 100644
index efd80c02ea89..000000000000
--- a/pkgs/by-name/st/stardust-xr-sphereland/package.nix
+++ /dev/null
@@ -1,43 +0,0 @@
-{
-  lib,
-  fetchFromGitHub,
-  rustPlatform,
-  libxkbcommon,
-  nix-update-script,
-}:
-
-rustPlatform.buildRustPackage (finalAttrs: {
-  pname = "stardust-xr-sphereland";
-  version = "0-unstable-2023-11-07";
-
-  src = fetchFromGitHub {
-    owner = "stardustxr";
-    repo = "sphereland";
-    rev = "39552d918c99a84eaf5f2d5e8734a472bf196f65";
-    hash = "sha256-LKdqTl14cdgD14IwAP34mWdDgREhy1CHOT86HywOxqM=";
-  };
-
-  env.STARDUST_RES_PREFIXES = "${finalAttrs.src}/res";
-
-  cargoHash = "sha256-4mESTxfogMQxfDMQRVML752fkinOIqkddW3PHmvxekc=";
-
-  buildInputs = [
-    libxkbcommon
-  ];
-
-  passthru.updateScript = nix-update-script {
-    extraArgs = [ "--version=branch" ];
-  };
-
-  meta = {
-    description = "Pointer/keyboard operated window manager for Stardust XR";
-    homepage = "https://stardustxr.org";
-    license = lib.licenses.mit;
-    mainProgram = "sphereland";
-    maintainers = with lib.maintainers; [
-      pandapip1
-      technobaboo
-    ];
-    platforms = lib.platforms.linux;
-  };
-})
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 09eb7d582112..e9df596361da 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -2114,6 +2114,10 @@ mapAliases {
   stacer = throw "'stacer' has been removed because it was abandoned upstream and relied upon vulnerable software"; # Added 2025-11-08
   stalwart = warnAlias "`stalwart` is currently pinned to `0.15.5`. If `0.16.x` is needed, it is available as `stalwart_0_16`. Note: `stalwart_0_16` is not compatible with `services.stalwart` at this time." stalwart_0_15;
   stalwart-mail = warnAlias "'stalwart-mail' has been renamed to/replaced by 'stalwart'" stalwart; # Added 2026-01-19
+  stardust-xr-kiara = throw "" "'stardust-xr-kiara' has been removed as it is no longer compatible with the latest versions of the Stardust XR server"; # Added 2026-07-04
+  stardust-xr-magnetar = throw "" "'stardust-xr-magnetar' has been removed as it is no longer compatible with the latest versions of the Stardust XR server"; # Added 2026-07-04
+  stardust-xr-phobetor = throw "" "'stardust-xr-phobetor' has been removed as it is no longer compatible with the latest versions of the Stardust XR server"; # Added 2026-07-04
+  stardust-xr-sphereland = throw "" "'stardust-xr-sphereland' has been removed as it is no longer compatible with the latest versions of the Stardust XR server"; # Added 2026-07-04
   starpls-bin = throw "'starpls-bin' has been renamed to/replaced by 'starpls'"; # Converted to throw 2025-10-27
   station = throw "station has been removed from nixpkgs, as there were no committers among its maintainers to unblock security issues"; # Added 2025-06-16
   steam-run-native = throw "'steam-run-native' has been renamed to/replaced by 'steam-run'"; # Converted to throw 2025-10-27