`pipenv shell` not activating env on PowerShell for mac (possibly *nix)

[samcarswell]

Issue description

Using pipenv shell on Powershell for mac does not activate the environment. Instead it displays the source command for bash and does not attempt to execute it. I can add .ps1 and hit enter to activate the environment correctly.

Expected result

pipenv shell to automatically activate the environment, like it does with fish or bash.

Actual result

psh ❯ pipenv shell
Creating a virtualenv for this project...
Pipfile: /Users/scar/tmp/test-pipenv/Pipfile
Using default python from /Users/scar/.pyenv/versions/3.11.8/bin/python3.11 (3.11.8) to create virtualenv...
⠙ Creating virtual environment...created virtual environment CPython3.11.8.final.0-64 in 162ms
  creator CPython3Posix(dest=/Users/scar/.local/share/virtualenvs/test-pipenv-W2MgHCvQ, clear=False, no_vcs_ignore=False, global=False)
  seeder FromAppData(download=False, pip=bundle, setuptools=bundle, wheel=bundle, via=copy, app_data_dir=/Users/scar/Library/Application Support/virtualenv)
    added seed packages: pip==24.0, setuptools==69.0.3, wheel==0.42.0
  activators BashActivator,CShellActivator,FishActivator,NushellActivator,PowerShellActivator,PythonActivator

✔ Successfully created virtual environment!
Virtualenv location: /Users/scar/.local/share/virtualenvs/test-pipenv-W2MgHCvQ
Creating a Pipfile for this project...
Launching subshell in virtual environment...
 . /Users/scar/.local/share/virtualenvs/test-pipenv-W2MgHCvQ/bin/activate
PowerShell 7.4.1

~/tmp/test-pipenv 🐍 v3.11.8
psh ❯  . /Users/scar/.local/share/virtualenvs/test-pipenv-W2MgHCvQ/bin/activate

The shell is left here, with the bash source command not executed.

Steps to replicate

Displayed above in actual result

---

$ pipenv --support

Pipenv version: '2023.12.1'

Pipenv location: '/Users/scar/.local/lib/python3.11/site-packages/pipenv'

Python location: '/Users/scar/.pyenv/versions/3.11.8/bin/python3.11'

OS Name: 'posix'

User pip version: '23.3.2'

user Python installations found:

PEP 508 Information:

{'implementation_name': 'cpython',
 'implementation_version': '3.11.8',
 'os_name': 'posix',
 'platform_machine': 'arm64',
 'platform_python_implementation': 'CPython',
 'platform_release': '23.3.0',
 'platform_system': 'Darwin',
 'platform_version': 'Darwin Kernel Version 23.3.0: Wed Dec 20 21:30:59 PST '
                     '2023; root:xnu-10002.81.5~7/RELEASE_ARM64_T6030',
 'python_full_version': '3.11.8',
 'python_version': '3.11',
 'sys_platform': 'darwin'}

System environment variables:

• POWERSHELL_TELEMETRY_OPTOUT
• PSModulePath
• PIP_DISABLE_PIP_VERSION_CHECK
• TERM_PROGRAM_VERSION
• STARSHIP_SESSION_KEY
• LANG
• DOTNET_WATCH_SUPPRESS_LAUNCH_BROWSER
• SHELL
• LaunchInstanceID
• XPC_FLAGS
• __CFBundleIdentifier
• STARSHIP_SHELL
• PYENV_SHELL
• ITERM_PROFILE
• HOMEBREW_NO_ANALYTICS
• PIPENV_SHELL
• TMPDIR
• DOTNET_CLI_TELEMETRY_OPTOUT
• SECURITYSESSIONID
• COLORFGBG
• HOME
• XPC_SERVICE_NAME
• TERM
• PATH
• SSH_AUTH_SOCK
• __CF_USER_TEXT_ENCODING
• PIP_PYTHON_PATH
• TERM_PROGRAM
• COMMAND_MODE
• LC_TERMINAL
• nvm_current_version
• PYTHONFINDER_IGNORE_UNSUPPORTED
• USER
• TERM_SESSION_ID
• COLORTERM
• LC_TERMINAL_VERSION
• PWD
• PIPENV_ACTIVE
• ITERM_SESSION_ID
• LOGNAME
• VIRTUAL_ENV_DISABLE_PROMPT
• PYTHONDONTWRITEBYTECODE
• SHLVL

Pipenv–specific environment variables:

• PIPENV_SHELL: /usr/local/bin/pwsh
• PIPENV_ACTIVE: 1

Debug–specific environment variables:

• PATH: /Users/scar/.pyenv/versions/3.11.8/bin:/Users/scar/.pyenv/versions/3.9.18/bin:/usr/local/microsoft/powershell/7:/Users/scar/.pyenv/versions/3.11.8/bin:/Users/scar/.pyenv/versions/3.9.18/bin:/Users/scar/.pyenv/versions/3.11.8/bin:/Users/scar/.pyenv/versions/3.9.18/bin:/Users/scar/.pyenv/versions/3.11.8/bin:/Users/scar/.pyenv/versions/3.9.18/bin:/usr/local/microsoft/powershell/7:/Users/scar/.pyenv/shims:/Users/scar/.local/share/nvm/v17.9.1/bin:/Users/scar/.local/bin:/opt/homebrew/bin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/usr/local/share/dotnet:~/.dotnet/tools
• SHELL: /opt/homebrew/bin/fish
• LANG: en_AU.UTF-8
• PWD: /Users/scar/tmp/test-pipenv

---

Contents of Pipfile ('/Users/scar/tmp/test-pipenv/Pipfile'):

[[source]]
url = "https://pypi.org/simple"
verify_ssl = true
name = "pypi"

[packages]

[dev-packages]

[requires]
python_version = "3.11"

[samcarswell]

The solution was for me to use --fancy. By setting $env:PIPENV_SHELL_FANCY = 1 in my profile.ps1 I'm able to use the command in the same way as other shells and omit the flag.