Put android:versionCode and such back in the static AndroidManifest.xml. I forgot that F-Droid needs to see it.

GNUmakefile

@@ -675,6 +675,15 @@ src/version.h : $(firstword $(MAKEFILE_LIST))
 	@echo "#define VERSION_NUMBER \"$(VERSION_NUMBER)\"" > $@
 	@echo "#define VERSION_NAME \"$(VERSION_NAME)\"" >> $@
 
+src/android/AndroidManifest.xml : $(firstword $(MAKEFILE_LIST))
+	@echo "[android_version] $@"
+	@sed -i \
+		-e 's/versionCode=".*"/versionCode="$(VERSION_CODE)"/' \
+		-e 's/versionName=".*"/versionName="$(VERSION_NUMBER)"/' \
+		-e 's/android:minSdkVersion="[[:digit:]]*"/android:minSdkVersion="$(ANDROID_MIN_SDK_VERSION)"/' \
+		-e 's/android:targetSdkVersion="[[:digit:]]*"/android:targetSdkVersion="$(ANDROID_TARGET_SDK_VERSION)"/' \
+		$@
+
 # Android support.
 out/res/layout_activity_main.xml.flat: src/android/res/layout/activity_main.xml
 	@mkdir -p $(dir $@)
@@ -690,8 +699,6 @@ out/apk/res.apk out/gen/com/unprompted/tildefriends/R.java: out/res/layout_activ
 	@echo [aapt2 link] res.apk
 	@mkdir -p out/apk/
 	@$(ANDROID_BUILD_TOOLS)/aapt2 link -I $(ANDROID_PLATFORM)/android.jar out/res/layout_activity_main.xml.flat out/res/drawable_icon.xml.flat \
-		--version-code $(VERSION_CODE) \
-		--version-name $(VERSION_NUMBER) \
 		--min-sdk-version $(ANDROID_MIN_SDK_VERSION) \
 		--target-sdk-version $(ANDROID_TARGET_SDK_VERSION) \
 		--manifest src/android/AndroidManifest.xml \
@@ -702,8 +709,6 @@ out/apk/res.fdroid.apk out/gen_fdroid/com/unprompted/tildefriends/R.java: out/re
 	@echo [aapt2 link] res.fdroid.apk
 	@mkdir -p out/apk/
 	@$(ANDROID_BUILD_TOOLS)/aapt2 link -I $(ANDROID_PLATFORM)/android.jar out/res/layout_activity_main.xml.flat out/res/drawable_icon.xml.flat \
-		--version-code $(VERSION_CODE) \
-		--version-name $(VERSION_NUMBER) \
 		--min-sdk-version $(ANDROID_MIN_SDK_VERSION) \
 		--target-sdk-version $(ANDROID_TARGET_SDK_VERSION) \
 		--rename-manifest-package com.unprompted.tildefriends.fdroid \
@@ -753,8 +758,6 @@ out/TildeFriends.aab: out/apk/classes.dex $(filter-out %debug%, $(ANDROID_TARGET
 	@mkdir -p out/aab/staging
 	@$(ANDROID_BUILD_TOOLS)/aapt2 link --proto-format -o out/aab/temporary.apk \
 		-I $(ANDROID_PLATFORM)/android.jar \
-		--version-code $(VERSION_CODE) \
-		--version-name $(VERSION_NUMBER) \
 		--min-sdk-version $(ANDROID_MIN_SDK_VERSION) \
 		--target-sdk-version $(ANDROID_TARGET_SDK_VERSION) \
 		--manifest src/android/AndroidManifest.xml \

src/android/AndroidManifest.xml

@@ -4,6 +4,8 @@
 	<uses-permission android:name="android.permission.INTERNET"/>
 	<application
 		android:label="Tilde Friends"
+		android:versionCode="25"
+		android:versionName="0.0.22-wip"
 		android:usesCleartextTraffic="true"
 		android:debuggable="false">
 		<meta-data android:name="android.max_aspect" android:value="2.1"/>