(nushell): venv string concat syntax issue

[nathanlisabio]

Issue

when trying to activate a venv in nushell via use /path/to/activate.nu, it'll encounter an error saying that the path is not of type string.

Environment

Provide at least:

• OS: ubuntu 24.04
• pip list of the host python where virtualenv is installed:

nu ❯ brew info virtualenv
==> virtualenv: stable 20.29.3 (bottled), HEAD
Tool for creating isolated virtual python environments
https://virtualenv.pypa.io/
Installed
/home/linuxbrew/.linuxbrew/Cellar/virtualenv/20.29.3 (279 files, 6.6MB) *
  Poured from bottle using the formulae.brew.sh API on 2025-03-29 at 18:54:03
From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/v/virtualenv.rb
License: MIT
==> Dependencies
Required: python@3.13 ✔
==> Options
--HEAD
        Install HEAD version
==> Analytics
install: 11,120 (30 days), 35,397 (90 days), 155,930 (365 days)
install-on-request: 10,577 (30 days), 33,817 (90 days), 133,302 (365 days)
build-error: 2 (30 days)


nu ❯ pip3 list
Package        Version
-------------- -------
cffi           1.17.1
cryptography   44.0.2
libxml2-python 2.13.7
pip            25.0
pycparser      2.22
wheel          0.45.1


nu ➜ 

Output of the virtual environment creation

Make sure to run the creation with -vvv --with-traceback:

nu ➜ use /data/venvs/py313-my-personal-finance/bin/activate.nu -vvv --with-traceback
Error: nu::parser::unknown_flag

  × The `use` command doesn't have flag `-v`.
   ╭─[entry #6:1:60]
 1 │ use /data/venvs/py313-my-personal-finance/bin/activate.nu -vvv --with-traceback
   ·                                                            ┬
   ·                                                            ╰── unknown flag
   ╰────
  help: Available flags: --help(-h). Use `--help` for more information.

[nathanlisabio]

ive manually modified the activate.nu script to fix it. will try to get a PR in.

help is appreciated in terms of directing which file is responsible for generating the activate.nu file