Pin Android NDK version to 21.4.7075529

GitHub Actions seems to experience some issues with detecting the right
Android NDK to use. There all sorts of hacks with "side-by-side"
installation and "ndk-bundle" which you can read about elsewhere.

Resolve this predicament by pinning the NDK version we are using for
building our native code, both BoringSSL and Themis JNI stuff.

This means developers will have to install this specific version of NDK
instead of using whatever they are using. But that's not a particular
issue. NDK does not affect compatibility of apps either, unless Google
really screws up and breaks something there. Not in our case though
since we're not really using anything Android-specific in our code.

[debug] run on CI

[debug] disable stuff

Revert "Pin Android NDK version to 21.4.7075529"

This reverts commit 6767e61.

ANDROID_NDK_HOME

ANDROID_NDK_HOME

no

3.6.4

Revert "Revert "Pin Android NDK version to 21.4.7075529""

This reverts commit ae48ecd.

what if?

oh fuck you

Revert "3.6.4"

This reverts commit d369d2e.

Revert "no"

This reverts commit 9d47741.

Revert "ANDROID_NDK_HOME"

This reverts commit 36857d6.

Revert "ANDROID_NDK_HOME"

This reverts commit f9b7ecb.

Revert "Revert "Revert "Pin Android NDK version to 21.4.7075529"""

This reverts commit 3122e24.

asdasdas

asdsd

asdas

chec it out

asd

do eet

try to unfuck

and build again

oh fuck you too, actions

comments

Pin to macos-10.15 because fuck surpriises

do list first

try to make it faster

what if I just remove these instead

them just do this

and disable this for a moment

yep, seems to be working

rename

.github/workflows/test-java.yaml

@@ -20,6 +20,7 @@ on:
       - master
       - stable
       - release/*
+      - pin-android-ndk
   schedule:
     - cron: '0 6 * * *' # every day at 6:00 UTC
 
@@ -30,6 +31,7 @@ jobs:
   unit-tests:
     name: Unit tests
     runs-on: ${{ matrix.os }}
+    if: false
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
@@ -63,8 +65,15 @@ jobs:
 
   android-tests:
     name: Android emulator
-    runs-on: macos-latest
+    runs-on: macos-10.15
     steps:
+      # This particular version of CMake confuses Gradle by not being semver.
+      # We're fine with 3.10.2 which is also installed. Keep an eye on the
+      # virtual environments though:
+      # https://github.com/actions/virtual-environments/blob/main/images/macos/macos-10.15-Readme.md#android
+      - name: Nuke CMake 3.18.1-g262b901
+        run: |
+          ~/Library/Android/sdk/tools/bin/sdkmanager --uninstall 'cmake;3.18.1'
       - name: Check out code
         uses: actions/checkout@v2
         with:
@@ -89,6 +98,7 @@ jobs:
   android-example:
     name: Example – AndroidThemis
     runs-on: ubuntu-latest
+    if: false
     steps:
       - name: Check out code
         uses: actions/checkout@v2
@@ -102,6 +112,7 @@ jobs:
   java-example:
     name: Example project – JavaThemis
     runs-on: ubuntu-latest
+    if: false
     steps:
       - name: Install system dependencies
         run: |