Unable to set up python2 for specific App version : 0.11-beta-8c81c98d8b

[whyash8]

Operating System

Ubuntu

Android Studio Version

android-studio-2021.1.1.23-linux

RAM size

8 gb ram

Free disk space

25.6 gb

Which step are you stuck on?

i was trying to build bazel for that specific application version but getting the error below .

Error Log

ERROR: /home/yash-sharma/.cache/bazel/_bazel_yash-sharma/be3345fe8849b7df3b0505581d7f3bab/external/maven/BUILD:1388:11: AarResourcesExtractor external/maven/_aar/unzipped/resources/androidx_cardview_cardview failed: (Exit 1): aar_resources_extractor failed: error executing command bazel-out/host/bin/external/bazel_tools/tools/android/aar_resources_extractor --input_aar ... (remaining 9 argument(s) skipped)

Use --sandbox_debug to see verbose messages from the sandbox aar_resources_extractor failed: error executing command bazel-out/host/bin/external/bazel_tools/tools/android/aar_resources_extractor --input_aar ... (remaining 9 argument(s) skipped)

Use --sandbox_debug to see verbose messages from the sandbox
Traceback (most recent call last):
  File "/home/yash-sharma/.cache/bazel/_bazel_yash-sharma/be3345fe8849b7df3b0505581d7f3bab/sandbox/processwrapper-sandbox/25/execroot/__main__/bazel-out/host/bin/external/bazel_tools/tools/android/aar_resources_extractor.runfiles/bazel_tools/tools/android/aar_resources_extractor.py", line 35, in <module>
    from absl import app
  File "/home/yash-sharma/.cache/bazel/_bazel_yash-sharma/be3345fe8849b7df3b0505581d7f3bab/sandbox/processwrapper-sandbox/25/execroot/__main__/bazel-out/host/bin/external/bazel_tools/tools/android/aar_resources_extractor.runfiles/bazel_tools/third_party/py/abseil/absl/app.py", line 38, in <module>
    from absl import flags
  File "/home/yash-sharma/.cache/bazel/_bazel_yash-sharma/be3345fe8849b7df3b0505581d7f3bab/sandbox/processwrapper-sandbox/25/execroot/__main__/bazel-out/host/bin/external/bazel_tools/tools/android/aar_resources_extractor.runfiles/bazel_tools/third_party/py/abseil/absl/flags/__init__.py", line 40, in <module>
    from absl.flags import _argument_parser
  File "/home/yash-sharma/.cache/bazel/_bazel_yash-sharma/be3345fe8849b7df3b0505581d7f3bab/sandbox/processwrapper-sandbox/25/execroot/__main__/bazel-out/host/bin/external/bazel_tools/tools/android/aar_resources_extractor.runfiles/bazel_tools/third_party/py/abseil/absl/flags/_argument_parser.py", line 29, in <module>
    from absl.flags import _helpers
  File "/home/yash-sharma/.cache/bazel/_bazel_yash-sharma/be3345fe8849b7df3b0505581d7f3bab/sandbox/processwrapper-sandbox/25/execroot/__main__/bazel-out/host/bin/external/bazel_tools/tools/android/aar_resources_extractor.runfiles/bazel_tools/third_party/py/abseil/absl/flags/_helpers.py", line 38, in <module>
    from six.moves import range  # pylint: disable=redefined-builtin
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
ModuleNotFoundError: No module named 'six.moves'
----------------
Note: The failure of target @bazel_tools//tools/android:aar_resources_extractor (with exit code 1) may have been caused by the fact that it is a Python 2 program that was built in the host configuration, which uses Python 3. You can change the host configuration (for the entire build) to instead use Python 2 by setting --host_force_python=PY2.

If this error started occurring in Bazel 0.27 and later, it may be because the Python toolchain now enforces that targets analyzed as PY2 and PY3 run under a Python 2 and Python 3 interpreter, respectively. See https://github.com/bazelbuild/bazel/issues/7899 for more information.
----------------
Target //:oppia failed to build
Use --verbose_failures to see the command lines of failed build steps.
INFO: Elapsed time: 1.240s, Critical Path: 1.09s
INFO: 20 processes: 19 internal, 1 processwrapper-sandbox.
FAILED: Build did NOT complete successfully

Approaches already used to resolve the issue

sudo apt install python2

Additional information

No response

[whyash8]

@adhiamboperes please help!

[adhiamboperes]

@Rd4dev, is the python setup step still required with Bazel 6.5.0?

[Rd4dev]

@adhiamboperes, on Windows WSL, I had to configure Python 2 to build the developer version, and here are the commands

Bazel instructions

For Windows:

Installed ubuntu 22.04 [should work with Ubuntu-20.04 too (I can confirm as I tested that with bazel 6.2.0)
wsl --install Ubuntu-22.04

set username 
password

## Bazel instruction with wsl Ubuntu-22.04

$ sudo apt update && sudo apt upgrade

$ sudo apt install openjdk-11-jdk
$ java -version
openjdk version "11.0.22" 2024-01-16
OpenJDK Runtime Environment (build 11.0.22+7-post-Ubuntu-0ubuntu222.04.1)
OpenJDK 64-Bit Server VM (build 11.0.22+7-post-Ubuntu-0ubuntu222.04.1, mixed mode, sharing)

$ sudo apt install openjdk-17-jdk
$ java --version
openjdk 17.0.10 2024-01-16
OpenJDK Runtime Environment (build 17.0.10+7-Ubuntu-122.04.1)
OpenJDK 64-Bit Server VM (build 17.0.10+7-Ubuntu-122.04.1, mixed mode, sharing)

$ sudo apt install python2
$ sudo apt install gcc

$ mkdir -p $HOME/Android/Sdk

$ cp /mnt/c/Users/<UserName>/Downloads/commandlinetools-linux-7302050_latest.zip $HOME/Android/Sdk
cd $HOME/Android/Sdk

$ sudo apt install unzip
$ unzip commandlinetools-linux-7302050_latest.zip

$ cd cmdline-tools/
$ mkdir tools
$ mv -i * tools
$ cd ..

$ echo "export ANDROID_HOME=\$HOME/Android/Sdk" >> ~/.bashrc
$ echo "export PATH=\$ANDROID_HOME/cmdline-tools/tools/bin/:\$PATH" >> ~/.bashrc
$ source ~/.bashrc

$ sdkmanager
$ sdkmanager --install "platform-tools"
$ sdkmanager --install "platforms;android-33"
$ sdkmanager --install "build-tools;32.0.0"

$ sudo apt install apt-transport-https curl gnupg -y
$ curl -fsSL https://bazel.build/bazel-release.pub.gpg | gpg --dearmor >bazel-archive-keyring.gpg
$ sudo mv bazel-archive-keyring.gpg /usr/share/keyrings
$ echo "deb [arch=amd64 signed-by=/usr/share/keyrings/bazel-archive-keyring.gpg] https://storage.googleapis.com/bazel-apt stable jdk1.8" | sudo tee /etc/apt/sources.list.d/bazel.list

$ sudo apt update && sudo apt install bazel
$ bazel --version
bazel 7.1.2

$ sudo apt install bazel-6.5.0
$ bazel --version
bazel 7.1.2

$ sudo rm /usr/bin/bazel
$ sudo ln -s /usr/bin/bazel-6.5.0 /usr/bin/bazel
$ bazel --version
bazel 6.5.0

$ mkdir $HOME/opensource
$ cd $HOME/opensource

$ git clone https://github.com/oppia/oppia-android.git

$ cd oppia-android/
$ scripts/setup.sh
-bash: scripts/setup.sh: Permission denied

$ chmod +x scripts/setup.sh
$ scripts/setup.sh
Using Ktlint 0.37.1
Ktlint file downloaded
Using Checkstyle version 8.37
Checkstyle file downloaded
Using Bufbuild version v0.37.1
Buf downloaded
Using Buildifier version 3.4.0
Buildifier file downloaded

$ sudo update-alternatives --config java
There are 2 choices for the alternative java (providing /usr/bin/java).

  Selection    Path                                         Priority   Status
------------------------------------------------------------
* 0            /usr/lib/jvm/java-17-openjdk-amd64/bin/java   1711      auto mode
  1            /usr/lib/jvm/java-11-openjdk-amd64/bin/java   1111      manual mode
  2            /usr/lib/jvm/java-17-openjdk-amd64/bin/java   1711      manual mode

Press <enter> to keep the current choice[*], or type selection number: 1
update-alternatives: using /usr/lib/jvm/java-11-openjdk-amd64/bin/java to provide /usr/bin/java (java) in manual mode

$ java --version
openjdk 11.0.22 2024-01-16
OpenJDK Runtime Environment (build 11.0.22+7-post-Ubuntu-0ubuntu222.04.1)
OpenJDK 64-Bit Server VM (build 11.0.22+7-post-Ubuntu-0ubuntu222.04.1, mixed mode, sharing)

$ git branch
$ git branch -r
origin/HEAD -> origin/develop
.....
origin/migrate-to-newer-bazel-and-kotlin
.....

$ git checkout -b migrate_to_bazel_6.5.0 origin/migrate-to-newer-bazel-and-kotlin
M       scripts/setup.sh
Branch 'migrate_to_bazel_6.5.0' set up to track remote branch 'migrate-to-newer-bazel-and-kotlin' from 'origin'.
Switched to a new branch 'migrate_to_bazel_6.5.0'

$ cat .bazelversion
6.5.0

$ bazel build //:oppia
Target //:oppia up-to-date:
  bazel-bin/oppia_deploy.jar
  bazel-bin/oppia_unsigned.apk
  bazel-bin/oppia.apk

I followed at that time. #4886 (comment)

Based on the error log, it seems there might be a Python version conflict. While installing Python 2 via sudo apt install python2 was considered, it would be helpful to confirm whether the system's current Python version is pointing to Python 2. If not, I believe using update-alternatives (as mentioned in #5594 (comment)) or creating a symlink could resolve the issue.

[adhiamboperes]

Thanks @Rd4dev! @whyash8, please try these out and let us know if you encounter further issues.

[adhiamboperes]

@whyash8, might this or this help?

[whyash8]

thanks a lot it worked !