poetry: Poetry 1.1.11 | AttributeError 'Link' object has no attribute 'name'

I was struggling with the same as OP and I figured out that the hashes were cached so i deleted /.cache/pypoetry/ along with my poetry.lock and then it worked. EDIT: this was debian

https://github.com/python-poetry/poetry/issues/4701#issuecomment-970423634

above solution don’t work for me

the op of this thread found the error when installing bokeh and possibly other package as well, but i can recreate it from empty project

• OS version and name: ubuntu 21.10
• Poetry version: 1.1.11
• Link of a Gist with the contents of your pyproject.toml file:

1. create empty project with poetry

[tool.poetry]
name = "temp"
version = "0.1.0"
description = ""
authors = ["author <me@gmail.com>"]

[tool.poetry.dependencies]
python = "^3.9"

[tool.poetry.dev-dependencies]

[build-system]
requires = ["poetry-core>=1.0.0"]
build-backend = "poetry.core.masonry.api"

1. poetry add flask-admin

$ poetry add flask-admin
Using version ^1.5.8 for Flask-Admin

Updating dependencies
Resolving dependencies... (0.8s)

Package operations: 1 install, 0 updates, 0 removals

  • Installing flask-admin (1.5.8): Failed

  AttributeError

  'Link' object has no attribute 'name'

  at ~/.local/share/pypoetry/venv/lib/python3.9/site-packages/poetry/installation/executor.py:632 in _download_link
      628│                 raise RuntimeError(
      629│                     "Invalid hashes ({}) for {} using archive {}. Expected one of {}.".format(
      630│                         ", ".join(sorted(archive_hashes)),
      631│                         package,
    → 632│                         archive.name,
      633│                         ", ".join(sorted(hashes)),
      634│                     )
      635│                 )
      636│


Failed to add packages, reverting the pyproject.toml file to its original content.

$ python3 get-poetry.py --uninstall
# We are sorry to see you go!

This will uninstall Poetry.

It will remove the `poetry` command from Poetry's bin directory, located at:

$HOME/.poetry/bin

This will also remove Poetry from your system's PATH.


Are you sure you want to uninstall Poetry? (y/[n]) y

$ which poetry
/home/r3r/.local/bin/poetry
$ ll ~/.local/bin/poetry
lrwxrwxrwx 1 r3r r3r 47 Nov  7 12:26 /home/r3r/.local/bin/poetry -> /home/r3r/.local/share/pypoetry/venv/bin/poetry
$ rm ~/.local/bin/poetry
rm: remove symbolic link '/home/r3r/.local/bin/poetry'? y
$ poetry --version
poetry: command not found

1. reinstall as suggested above

2. when i try poetry add flask-admin, the same error on 2 happen again

temporary solution 1 : poetry run pip install flask-admin

but flask-admin have to be installed everytime you run poetry install

temporary solution 2: edit executor.py

on my case it is on ~/.local/share/pypoetry/venv/lib/python3.9/site-packages/poetry/installation/executor.py

so i edit based on this comment https://github.com/python-poetry/poetry/issues/4701#issuecomment-963712002

archive.name if hasattr(archive, 'name') else archive.filename,

this is little bit different with recent poetry code

but i got another error

$ poetry add flask-admin
Using version ^1.5.8 for Flask-Admin

Updating dependencies
Resolving dependencies... (0.1s)

Package operations: 1 install, 0 updates, 0 removals

  • Installing flask-admin (1.5.8): Failed

  RuntimeError

  Invalid hashes (sha256:e7e11ee8bf67ad176dd1224c137e860f5d387357d7331fc650f0a9eef03cdc83) for flask-admin (1.5.8) using archive Flask-Admin-1.5.8.tar.gz. Expected one of sha256:eb06a1f31b98881dee53a55c64faebd1990d6aac38826364b280df0b2679ff74.

  at ~/.poetry/lib/poetry/installation/executor.py:628 in _download_link
      624│                     )
      625│                 )
      626│
      627│             if archive_hashes.isdisjoint(hashes):
    → 628│                 raise RuntimeError(
      629│                     "Invalid hashes ({}) for {} using archive {}. Expected one of {}.".format(
      630│                         ", ".join(sorted(archive_hashes)),
      631│                         package,
      632│                         archive.name if hasattr(archive, 'name') else archive.filename,


Failed to add packages, reverting the pyproject.toml file to its original content.

this is another error not related to this issue, but i still can’t find if there is issue similar to this

so in the end i use temporary solution 1 for flask-admin

there is some solution for this issue here https://github.com/python-poetry/poetry/issues/4085, but i can’t find which one fit for me yet without using temporary solution 2 to get RuntimeError

Looks like this should be archive.filename instead because archive is a Link and Link has .filename but no .name:

 → 632│                         archive.name,

Though, looks like in current source those lines were refactored a bit since the most recent pypi release (but still has the archive.name bug): https://github.com/python-poetry/poetry/blob/5dcf24da04275425631c817419ad5cb17cbd0177/poetry/installation/executor.py#L681-L686

So that should cover the first error, but not underlying cause of where poetry isn’t matching proper hashes sometimes.

Only one instance of the error left. Deleted the poetry.lock file and ran poetry install again.

What python are you trying to install this for? Pathlib is inbuilt into Python since 3.4