1831442 - Installing moz-phab externally-managed-environment error on ubuntu 23.04

Status: RESOLVED FIXED

(Conduit :: moz-phab, defect)

Description

[Ashley Hale [:ahale]]

Attachment: Error output from bootstrap

Trying to bootstrap on a fresh install of ubuntu 23.04 to work on another bug, and I first encountered problems with pip3 being unable to install Mercurial, I worked around that by installing Mercurial system-wide, so far so good, but then I encounter the same problem with moz-phab and there is no python3-MozPhab package on ubuntu to work around this error.

Attached the most relevant part of the output.

Comment 1

[Mike Hommey [:glandium]]

There is arguably a bug on the Ubuntu side: the command that is being run is only asking to list what is installed, it's not trying to install things. (/usr/bin/python3 -m pip show -f MozPhab)

Comment 4

[:glob ✱]

(In reply to Mike Hommey [:glandium] from comment #1)

There is arguably a bug on the Ubuntu side: the command that is being run is only asking to list what is installed, it's not trying to install things. (/usr/bin/python3 -m pip show -f MozPhab)

To test this I spun up a clean Ubuntu Lunar image, installed python3-pip, and ran pip show:

glob@ubuntu:~$ /usr/bin/python3 -m pip show -f MozPhab
WARNING: Package(s) not found: MozPhab

I was only able to trigger the warning with pip install:

glob@ubuntu:~$ /usr/bin/python3 -m pip install MozPhab
error: externally-managed-environment

× This environment is externally managed
╰─> To install Python packages system-wide, try apt install
    python3-xyz, where xyz is the package you are trying to
    install.

    If you wish to install a non-Debian-packaged Python package,
    create a virtual environment using python3 -m venv path/to/venv.
    Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
    sure you have python3-full installed.

    If you wish to install a non-Debian packaged Python application,
    it may be easiest to use pipx install xyz, which will manage a
    virtual environment for you. Make sure you have pipx installed.

    See /usr/share/doc/python3.11/README.venv for more information.

note: If you believe this is a mistake, please contact your Python installation or OS distribution provider. You can override this, at the risk of breaking your Python installation or OS, by passing --break-system-packages.
hint: See PEP 668 for the detailed specification.

Comment 5

[Mike Hommey [:glandium]]

Having encountered this myself now, what's failing is the pip install --user that precedes the pip show. I don't know why they made --user fail... a work around is to set the PIP_BREAK_SYSTEM_PACKAGES environment variable to 1 (or changing the pip install command to pass --break-system-packages).

Comment 6

[:glob ✱]

This is a problem in how bootstrap installs moz-phab, not in moz-phab itself.

Comment 7

[Mike Hommey [:glandium]]

The install-moz-phab command is in tools/phabricator, not python/mozboot. The moz-phab component is the closest wrt ownership.

Comment 8

[Alex Hochheiden [:ahochheiden] [he/him]]

Attachment: Bug 1831442 - Fix an issue with `./mach install-moz-phab` on `Ubuntu 23.04` and `Debian 12` r?#build

Comment 9

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/61380efc6f72
Fix an issue with `./mach install-moz-phab` on `Ubuntu 23.04` and `Debian 12` r=firefox-build-system-reviewers,glandium

Comment 10

[Narcis Beleuzu [:NarcisB]]

https://hg.mozilla.org/mozilla-central/rev/61380efc6f72

Comment 11

[Kai Engert [:KaiE:]]

Should the install instructions at
https://moz-conduit.readthedocs.io/en/latest/mozphab-linux.html
also mention that it's necessary to set
PIP_BREAK_SYSTEM_PACKAGES=1 ?