Allow parallel uninstalls

[adriangb]

Pull Request Check List

Resolves: #9263

I tested this by trying to reproduce via @abn 's script:

#!/usr/bin/env bash -e

TMP_DIR=$(mktemp -d)
TOML=${TMP_DIR}/pyproject.toml

function reset-pyproject() {
  cat >"${TOML}" <<EOF
[tool.poetry]
name = "foobar"
version = "0.1.0"
description = ""
authors = ["Bender Rodriguez <[email protected]>"]

[tool.poetry.dependencies]
python = "^3.8"

[tool.poetry.dev-dependencies]
ipython = "*"
EOF
}

mkdir -p "${TMP_DIR}/foobar"
touch "${TMP_DIR}/foobar/__init__.py"

POETRY=$(PWD)/.venv/bin/poetry

pushd "${TMP_DIR}" || exit

for i in $(seq 1 10); do
  reset-pyproject
  "${POETRY}" lock
  "${POETRY}" install
  sed -i '' '/ipython/d' "${TOML}" # On macOS, use 'sed -i '' '...' to edit in-place
  "${POETRY}" lock
  "${POETRY}" install --sync
done

popd || exit

I was not able to reproduce the original issue and uninstalls are considerably faster.

[github-actions]

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