How to use iconPath?

[nomeata]

When I build my app with platform.android.buildApp, it gets a very generic icon, which I obviously want to replace. I see a iconPath parameter, as well a buildIcons derivation, but it is unclear to me how to use them – iconPath seems to be copied verbatim into the manifest, so surely a /nix/store path would not work well there…

[nomeata]

Looks like I figured it out:

      platform.android.buildApp {
        package = p: p.…;
        …
        resources = platform.android.buildIcons {
          src = ./android-icon.png;
        };

does the job.

Unfortunately, now Android requires me to deal with figuring out how Adaptive Icons work.

[nomeata]

Solved that with this quick hack:

--- /home/jojo/build/haskell/reflex/reflex-platform/android/buildIcons.nix	2019-05-11 11:44:46.110491485 +0200
+++ ./buildIcons.nix	2020-08-30 13:00:10.519888972 +0200
@@ -21,7 +21,18 @@
       local dir="$out/drawable-''${x}dpi"
       mkdir "$dir"
       convert -resize "$(launcherIconSize "$x")" -flatten "$src" "$dir/ic_launcher.png"
+      convert -resize "$(launcherIconSize "$x")" -flatten "$src" "$dir/ic_launcher_background.png"
+      convert -resize "$(launcherIconSize "$x")" -flatten "$src" "$dir/ic_launcher_foreground.png"
     done
+
+    mkdir $out/drawable-anydpi-v26
+    cat > $out/drawable-anydpi-v26/ic_launcher.xml <<__END__
+  <?xml version="1.0" encoding="utf-8"?>
+  <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+      <background android:drawable="@drawable/ic_launcher_background" />
+      <foreground android:drawable="@drawable/ic_launcher_foreground" />
+  </adaptive-icon>
+  __END__
   '';
   nativeBuildInputs = [
     imagemagick