V panic: main.validate_env:455 error converting build-tools version "" to semantic version. about vab

[Larpon]

@erich0123 - thanks for your report.

The output of ./vab doctor reveals that it looks like you need to install both platform API level 21 and build-tools 30.0.2 to your SDK located in /home/erich/Android/Sdk/ before you can use them.

These can be installed with:
./vab install "platforms;android-21,build-tools;30.0.2"

If they are already installed, there might be a bug. In that case can you please post the output of:
ls -al /home/erich/Android/Sdk/platforms/
and
ls -al /home/erich/Android/Sdk/build-tools/

[erich0123]

@Larpon

ls -al /home/erich/Android/Sdk/platforms

total 16
drwxr-xr-x  4 erich erich 4096 Feb 26 12:57 .
drwxr-xr-x 17 erich erich 4096 Feb 26 12:48 ..
drwxrwxr-x  5 erich erich 4096 Feb 26 12:57 android-21
drwxr-xr-x  6 erich erich 4096 Sep 15 19:29 android-30

ls -al /home/erich/Android/Sdk/build-tools/

total 16
drwxr-xr-x  4 erich erich 4096 Feb 26 13:00 .
drwxr-xr-x 17 erich erich 4096 Feb 26 12:48 ..
drwxrwxr-x  5 erich erich 4096 Feb 26 13:00 24.0.3
drwxr-xr-x  6 erich erich 4096 Sep 15 19:27 30.0.2

[Larpon]

@erich0123
Thanks. That's highly strange 😄

Your setup seems a bit "exotic" (sdkmanager is out of the SDK) - can you please try and build vab with:
v -d debug_sdk vab.v

Then post the output of:
./vab --list-apis && ./vab --list-build-tools
?

If your setup has the tools split up from the SDK root that might be the reason.
In that case the most "bullet-proof" method would currently be to run:

export ANDROID_SDK_ROOT=/home/erich/Android/Sdk

In your terminal before each session.
The ANDROID_SDK_ROOT env has highest preference when selecting the SDK.

[erich0123]

@Larpon Thanks, that worked!

Here's the output of ./vab --list-apis && ./vab --list-build-tools

android.sdk.root found by adb in "/usr/lib/android-sdk"
android.sdk.root found SDK in "/usr/lib/android-sdk"
android.sdk.root found by adb in "/usr/lib/android-sdk"
android.sdk.root found SDK in "/usr/lib/android-sdk"
android.sdk.root found by adb in "/usr/lib/android-sdk"
android.sdk.root found SDK in "/usr/lib/android-sdk"
android.sdk.root found by adb in "/usr/lib/android-sdk"
android.sdk.root found SDK in "/usr/lib/android-sdk"
android.sdk.root found by adb in "/usr/lib/android-sdk"
android.sdk.root found SDK in "/usr/lib/android-sdk"
android.sdk.root found by adb in "/usr/lib/android-sdk"
android.sdk.root found SDK in "/usr/lib/android-sdk"
android.sdk.root found by adb in "/usr/lib/android-sdk"
android.sdk.root found SDK in "/usr/lib/android-sdk"
android.sdk.root found by adb in "/usr/lib/android-sdk"
android.sdk.root found SDK in "/usr/lib/android-sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
30
29
21
android.sdk.root found by adb in "/usr/lib/android-sdk"
android.sdk.root found SDK in "/usr/lib/android-sdk"
android.sdk.root found by adb in "/usr/lib/android-sdk"
android.sdk.root found SDK in "/usr/lib/android-sdk"
android.sdk.root found by adb in "/usr/lib/android-sdk"
android.sdk.root found SDK in "/usr/lib/android-sdk"
android.sdk.root found by adb in "/usr/lib/android-sdk"
android.sdk.root found SDK in "/usr/lib/android-sdk"
android.sdk.root found by adb in "/usr/lib/android-sdk"
android.sdk.root found SDK in "/usr/lib/android-sdk"
android.sdk.root found by adb in "/usr/lib/android-sdk"
android.sdk.root found SDK in "/usr/lib/android-sdk"
android.sdk.root found by adb in "/usr/lib/android-sdk"
android.sdk.root found SDK in "/usr/lib/android-sdk"
android.sdk.root found by adb in "/usr/lib/android-sdk"
android.sdk.root found SDK in "/usr/lib/android-sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
android.sdk.root found SDK in hardcoded paths at "/home/erich/Android/Sdk"
30.0.2
24.0.3

[Larpon]

@erich0123 alright thanks for testing this scenario. I'll think about if we should change the order of how SDK paths are detected based on your feedback.

I'll close this issue for now then 🙂

[ipaz12]

@erich0123