diff --git a/qt/launcher-gui/src-tauri/src/platform/mod.rs b/qt/launcher-gui/src-tauri/src/platform/mod.rs
index 07af93720..f1b49ac10 100644
--- a/qt/launcher-gui/src-tauri/src/platform/mod.rs
+++ b/qt/launcher-gui/src-tauri/src/platform/mod.rs
@@ -4,7 +4,7 @@
 #[cfg(all(unix, not(target_os = "macos")))]
 pub mod unix;
 
-// #[cfg(target_os = "macos")]
+#[cfg(target_os = "macos")]
 pub mod mac;
 
 #[cfg(target_os = "windows")]
diff --git a/qt/launcher-gui/src-tauri/src/state.rs b/qt/launcher-gui/src-tauri/src/state.rs
index 09cde5ef4..f56a23447 100644
--- a/qt/launcher-gui/src-tauri/src/state.rs
+++ b/qt/launcher-gui/src-tauri/src/state.rs
@@ -73,6 +73,7 @@ impl From<NormalState> for State {
 
 pub enum State {
     LaunchAnki(Arc<uv::Paths>),
+    #[allow(dead_code)] // TODO: use
     Error(anyhow::Error),
     Uninstall(Arc<uv::Paths>),
     Normal(NormalState),
@@ -94,10 +95,6 @@ impl State {
             _ => Err(anyhow!("unexpected state")),
         }
     }
-
-    pub fn should_launch_anki(&self) -> bool {
-        matches!(self, State::LaunchAnki(_))
-    }
 }
 
 impl NormalState {
diff --git a/qt/launcher-gui/src/routes/Action.svelte b/qt/launcher-gui/src/routes/Action.svelte
index 1aa6d5f6c..d01c9185d 100644
--- a/qt/launcher-gui/src/routes/Action.svelte
+++ b/qt/launcher-gui/src/routes/Action.svelte
@@ -4,7 +4,7 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
 <script lang="ts">
     import { tr } from "./stores";
-    import { ExistingVersions, Versions } from "@generated/anki/launcher_pb";
+    import type { ExistingVersions, Versions } from "@generated/anki/launcher_pb";
     import Row from "$lib/components/Row.svelte";
     import EnumSelector from "$lib/components/EnumSelector.svelte";
 
@@ -20,7 +20,7 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
         choose: (version: string, existing: boolean, current?: string) => void;
     } = $props();
 
-    const availableVersions = $derived(
+    let availableVersions = $derived(
         releases.all
             .filter((v) => allowBetas || !v.isPrerelease)
             .map((v) => ({ label: v.version, value: v.version })),
@@ -30,7 +30,7 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
     let selected = $derived(availableVersions[0]?.value ?? null);
     let current = $derived(existing.current?.version);
 
-    let pyprojectModified = existing.pyprojectModifiedByUser;
+    let pyprojectModified = $derived(existing.pyprojectModifiedByUser);
 
     function _choose(version: string, keepExisting: boolean = false) {
         choose(version, keepExisting, current);
diff --git a/qt/launcher-gui/src/routes/Start.svelte b/qt/launcher-gui/src/routes/Start.svelte
index e68f5388f..f33d016fa 100644
--- a/qt/launcher-gui/src/routes/Start.svelte
+++ b/qt/launcher-gui/src/routes/Start.svelte
@@ -27,7 +27,7 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
     import Options from "./Options.svelte";
     import Term from "./Term.svelte";
     import AnkiWillStart from "./AnkiWillStart.svelte";
-    import { Terminal } from "@xterm/xterm";
+    import type { Terminal } from "@xterm/xterm";
 
     let {
         langs,
diff --git a/qt/launcher-gui/src/routes/stores.ts b/qt/launcher-gui/src/routes/stores.ts
index bb96b02bf..e9dd64022 100644
--- a/qt/launcher-gui/src/routes/stores.ts
+++ b/qt/launcher-gui/src/routes/stores.ts
@@ -1,8 +1,8 @@
 // Copyright: Ankitects Pty Ltd and contributors
 // License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 
-import * as _tr from "@generated/ftl-launcher";
 import type { GetLangsResponse_Pair, GetMirrorsResponse_Pair, GetVersionsResponse } from "@generated/anki/launcher_pb";
+import * as _tr from "@generated/ftl-launcher";
 import { writable } from "svelte/store";
 
 export const zoomFactor = writable(1.2);
diff --git a/ts/lib/generated/post.ts b/ts/lib/generated/post.ts
index be9e962be..196e47138 100644
--- a/ts/lib/generated/post.ts
+++ b/ts/lib/generated/post.ts
@@ -1,8 +1,6 @@
 // Copyright: Ankitects Pty Ltd and contributors
 // License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 
-import { isWindows } from "@tslib/platform";
-
 export interface PostProtoOptions {
     /** True by default. Shows a dialog with the error message, then rethrows. */
     alertOnError?: boolean;
@@ -10,7 +8,8 @@ export interface PostProtoOptions {
     customProtocol?: boolean;
 }
 
-const CUSTOM_PROTOCOL_URI = isWindows() ? "http://anki.localhost" : "anki://localhost" ;
+const IS_WINDOWS = navigator.platform.startsWith("Win");
+const CUSTOM_PROTOCOL_URI = IS_WINDOWS ? "http://anki.localhost" : "anki://localhost";
 
 export async function postProto<T>(
     method: string,
diff --git a/ts/lib/tslib/platform.ts b/ts/lib/tslib/platform.ts
index d9727c3a2..d055bcb53 100644
--- a/ts/lib/tslib/platform.ts
+++ b/ts/lib/tslib/platform.ts
@@ -10,11 +10,6 @@ export function isApplePlatform(): boolean {
     );
 }
 
-export function isWindows(): boolean {
-    const platform = window.navigator["platform" + ""];
-    return platform.startsWith("Win");
-}
-
 export function isDesktop(): boolean {
     return !(/iphone|ipad|ipod|android/i.test(window.navigator.userAgent));
 }