* installing *source* package ‘CASSIA’ ...
** this is package ‘CASSIA’ version ‘0.1.0’
** using staged installation
** R
** inst
** byte-compile and prepare package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded from temporary location
Creating new environment. Trying virtualenv first...
Using Python: /usr/bin/python3.13
Creating virtual environment 'cassia_env' ... 
+ /usr/bin/python3.13 -m venv /tmp/check-CRAN-incoming-hornik/.virtualenvs/cassia_env
The virtual environment was not created successfully because ensurepip is not
available.  On Debian/Ubuntu systems, you need to install the python3-venv
package using the following command.

    apt install python3.13-venv

You may need to use sudo with that command.  After installing the python3-venv
package, recreate your virtual environment.

Failing command: /tmp/check-CRAN-incoming-hornik/.virtualenvs/cassia_env/bin/python3.13

FAILED
Warning in value[[3L]](cond) :
  Virtualenv setup failed: Error creating virtual environment 'cassia_env' [error code 1]
Virtualenv failed. Trying conda as fallback...
Warning in value[[3L]](cond) :
  Conda setup failed: Unable to find conda binary. Is Anaconda installed?
Using existing virtualenv: cassia_env
Using virtual environment 'cassia_env' ...
Warning in system2(python, c("-c", shQuote(command)), stdout = TRUE, stderr = TRUE) :
  running command ''/tmp/check-CRAN-incoming-hornik/.virtualenvs/cassia_env/bin/python' -c 'import sys; import pip; sys.stdout.write(pip.__version__)' 2>&1' had status 1
Warning in value[[3L]](cond) :
  Virtualenv setup failed: the condition has length > 1

============================================================
  CASSIA Setup Error
============================================================

PROBLEM: Failed to create the CASSIA Python environment.
Error: Failed to set up CASSIA Python environment with method: auto

WHY THIS MATTERS: This may be due to permission issues or network problems.

HOW TO FIX:

Try these solutions:

1. Ensure python3-venv is installed:
   sudo apt install python3-venv

2. Check your internet connection

3. Try manually creating the environment:
   python3 -m venv ~/.virtualenvs/cassia_env

============================================================

** testing if installed package can be loaded from final location
Using existing virtualenv: cassia_env
Using virtual environment 'cassia_env' ...
Warning in system2(python, c("-c", shQuote(command)), stdout = TRUE, stderr = TRUE) :
  running command ''/tmp/check-CRAN-incoming-hornik/.virtualenvs/cassia_env/bin/python' -c 'import sys; import pip; sys.stdout.write(pip.__version__)' 2>&1' had status 1
Warning in value[[3L]](cond) :
  Virtualenv setup failed: the condition has length > 1

============================================================
  CASSIA Setup Error
============================================================

PROBLEM: Failed to create the CASSIA Python environment.
Error: Failed to set up CASSIA Python environment with method: auto

WHY THIS MATTERS: This may be due to permission issues or network problems.

HOW TO FIX:

Try these solutions:

1. Ensure python3-venv is installed:
   sudo apt install python3-venv

2. Check your internet connection

3. Try manually creating the environment:
   python3 -m venv ~/.virtualenvs/cassia_env

============================================================

** testing if installed package keeps a record of temporary installation path
* DONE (CASSIA)