This package can be used to install the nim compiler in a virtualenv:

virtualenv /your/venv
source /your/venv/bin/activate
pip install nim-install
nim_install
nim --version

installs nim version 1.2.6, nimble, nimgrep and nimsuggest

If you want to install a different version run e.g.:

nim_install 1.0.8

The compilation of nim is executed in parallel. Total installation time is about 40 seconds on my machine (including download time).