Hi to the community,

In order to install Nest 3.3 in Ubuntu 18.04 WITHOUTH the Docker, I followed two ways:

1) I downloaded the source zip file from "https://github.com/nest/nest-simulator/tags", then I followed the guide in "https://nest-simulator.readthedocs.io/en/v3.3/installation/linux_install.htm...", in particular the "Installation from source without a virtual Python environment" version.

What I obtain is an error in the terminal: salvo@salvo-Aspire-GX-781:~/Downloads/nest-simulator-3.3-build$ cmake -DCMAKE_INSTALL_PREFIX:PATH=/home/nest /home/salvo/Downloads/nest-simulator-3.3-build/ -- Host triple: x86_64-pc-linux -- Target triple: x86_64-pc-linux CMake Error at /usr/share/cmake-3.23/Modules/FindPackageHandleStandardArgs.cmake:230 (message): Could NOT find Python (missing: Python_INCLUDE_DIRS Python_LIBRARIES Development Development.Module Development.Embed) (found suitable version "3.8.13", minimum required is "3.8") Call Stack (most recent call first): /usr/share/cmake-3.23/Modules/FindPackageHandleStandardArgs.cmake:594 (_FPHSA_FAILURE_MESSAGE) /usr/share/cmake-3.23/Modules/FindPython/Support.cmake:3192 (find_package_handle_standard_args) /usr/share/cmake-3.23/Modules/FindPython.cmake:519 (include) cmake/ProcessOptions.cmake:367 (find_package) CMakeLists.txt:129 (nest_process_with_python)

-- Configuring incomplete, errors occurred! See also "/home/salvo/Downloads/nest-simulator-3.3-build/CMakeFiles/CMakeOutput.log". See also "/home/salvo/Downloads/nest-simulator-3.3-build/CMakeFiles/CMakeError.log". salvo@salvo-Aspire-GX-781:~/Downloads/nest-simulator-3.3-build$

2) I also tried to force the following Ubuntu commands to obtain, from the ppa repository, the Nest version that I need (this is the ppa nest site: https://launchpad.net/~nest-simulator/+archive/ubuntu/nest):

sudo add-apt-repository ppa:nest-simulator/nest sudo apt-get update sudo apt-get install nest=3.2-0~202202100714~ubuntu18.04.1

But is seems that the only package that is downloaded from this ppa is nest 2.20, in particular: 2.20.1-0~202103121402~ubuntu18.04.1.

What can I do to install Nest 3.3 in my Ubuntu 18.04?

Best,

Salvo