From fd0b383daeb947164dbbf625f4c869475c0f4da9 Mon Sep 17 00:00:00 2001
From: Florian Apolloner <florian@apolloner.eu>
Date: Tue, 9 Feb 2021 23:22:59 +0100
Subject: [PATCH] Remove setuptools/wheels/distribute from UNSAFE_PACKAGES.
 Fixes #1584

---
 poetry.lock                                   | 446 ++++++++++--------
 poetry/installation/pip_installer.py          |   4 +-
 poetry/puzzle/provider.py                     |   2 +-
 pyproject.toml                                |   1 +
 tests/fixtures/simple_project/pyproject.toml  |   1 +
 .../fixtures/with-pypi-repository.test        |  18 +
 tests/installation/test_installer.py          |  15 +-
 tests/installation/test_installer_old.py      |   2 +-
 .../version_solver/test_python_constraint.py  |   4 +-
 .../version_solver/test_unsolvable.py         |  26 +-
 10 files changed, 295 insertions(+), 224 deletions(-)

diff --git a/poetry.lock b/poetry.lock
index 6a04096460f..73c1b00b396 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -60,7 +60,7 @@ msgpack = ["msgpack-python (>=0.5,<0.6)"]
 
 [[package]]
 name = "certifi"
-version = "2020.11.8"
+version = "2020.12.5"
 description = "Python package for providing Mozilla's CA Bundle."
 category = "main"
 optional = false
@@ -68,7 +68,7 @@ python-versions = "*"
 
 [[package]]
 name = "cffi"
-version = "1.14.3"
+version = "1.14.4"
 description = "Foreign Function Interface for Python calling C code."
 category = "main"
 optional = false
@@ -87,11 +87,11 @@ python-versions = ">=3.6.1"
 
 [[package]]
 name = "chardet"
-version = "3.0.4"
+version = "4.0.0"
 description = "Universal encoding detector for Python 2 and 3"
 category = "main"
 optional = false
-python-versions = "*"
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [[package]]
 name = "cleo"
@@ -115,7 +115,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [[package]]
 name = "coverage"
-version = "5.3"
+version = "5.4"
 description = "Code coverage measurement for Python"
 category = "dev"
 optional = false
@@ -134,22 +134,36 @@ python-versions = ">=3.6,<4.0"
 
 [[package]]
 name = "cryptography"
-version = "3.2.1"
+version = "3.4.4"
 description = "cryptography is a package which provides cryptographic recipes and primitives to Python developers."
 category = "main"
 optional = false
-python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*"
+python-versions = ">=3.6"
 
 [package.dependencies]
-cffi = ">=1.8,<1.11.3 || >1.11.3"
-six = ">=1.4.1"
+cffi = ">=1.12"
 
 [package.extras]
 docs = ["sphinx (>=1.6.5,!=1.8.0,!=3.1.0,!=3.1.1)", "sphinx-rtd-theme"]
 docstest = ["doc8", "pyenchant (>=1.6.11)", "twine (>=1.12.0)", "sphinxcontrib-spelling (>=4.0.1)"]
 pep8test = ["black", "flake8", "flake8-import-order", "pep8-naming"]
+sdist = ["setuptools-rust (>=0.11.4)"]
 ssh = ["bcrypt (>=3.1.5)"]
-test = ["pytest (>=3.6.0,!=3.9.0,!=3.9.1,!=3.9.2)", "pretend", "iso8601", "pytz", "hypothesis (>=1.11.4,!=3.79.2)"]
+test = ["pytest (>=6.0)", "pytest-cov", "pytest-subtests", "pytest-xdist", "pretend", "iso8601", "pytz", "hypothesis (>=1.11.4,!=3.79.2)"]
+
+[[package]]
+name = "deepdiff"
+version = "5.2.2"
+description = "Deep Difference and Search of any Python object/data."
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+ordered-set = "4.0.2"
+
+[package.extras]
+cli = ["click (==7.1.2)", "pyyaml (==5.3.1)", "toml (==0.10.2)", "clevercsv (==0.6.6)"]
 
 [[package]]
 name = "distlib"
@@ -187,7 +201,7 @@ lxml = ["lxml"]
 
 [[package]]
 name = "httpretty"
-version = "1.0.2"
+version = "1.0.5"
 description = "HTTP client mock for Python"
 category = "dev"
 optional = false
@@ -195,7 +209,7 @@ python-versions = ">=3"
 
 [[package]]
 name = "identify"
-version = "1.5.10"
+version = "1.5.13"
 description = "File identification library for Python"
 category = "dev"
 optional = false
@@ -229,17 +243,18 @@ testing = ["packaging", "pep517", "importlib-resources (>=1.3)"]
 
 [[package]]
 name = "importlib-resources"
-version = "3.3.0"
+version = "5.1.0"
 description = "Read resources from Python packages"
 category = "main"
 optional = false
-python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,>=2.7"
+python-versions = ">=3.6"
 
 [package.dependencies]
 zipp = {version = ">=0.4", markers = "python_version < \"3.8\""}
 
 [package.extras]
-docs = ["sphinx", "rst.linker", "jaraco.packaging"]
+docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
+testing = ["pytest (>=3.5,!=3.7.3)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pytest-cov", "pytest-enabler", "pytest-black (>=0.3.7)", "pytest-mypy"]
 
 [[package]]
 name = "jeepney"
@@ -254,7 +269,7 @@ test = ["pytest", "pytest-trio", "pytest-asyncio", "testpath", "trio"]
 
 [[package]]
 name = "keyring"
-version = "21.5.0"
+version = "21.8.0"
 description = "Store and access your passwords safely."
 category = "main"
 optional = false
@@ -267,7 +282,7 @@ pywin32-ctypes = {version = "<0.1.0 || >0.1.0,<0.1.1 || >0.1.1", markers = "sys_
 SecretStorage = {version = ">=3.2", markers = "sys_platform == \"linux\""}
 
 [package.extras]
-docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
+docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
 testing = ["pytest (>=3.5,!=3.7.3)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pytest-cov", "jaraco.test (>=3.2.0)", "pytest-black (>=0.3.7)", "pytest-mypy"]
 
 [[package]]
@@ -280,7 +295,7 @@ python-versions = "*"
 
 [[package]]
 name = "more-itertools"
-version = "8.6.0"
+version = "8.7.0"
 description = "More routines for operating on iterables, beyond itertools"
 category = "dev"
 optional = false
@@ -288,7 +303,7 @@ python-versions = ">=3.5"
 
 [[package]]
 name = "msgpack"
-version = "1.0.0"
+version = "1.0.2"
 description = "MessagePack (de)serializer."
 category = "main"
 optional = false
@@ -302,9 +317,17 @@ category = "dev"
 optional = false
 python-versions = "*"
 
+[[package]]
+name = "ordered-set"
+version = "4.0.2"
+description = "A set that remembers its order, and allows looking up its items by their index in that order."
+category = "dev"
+optional = false
+python-versions = ">=3.5"
+
 [[package]]
 name = "packaging"
-version = "20.4"
+version = "20.9"
 description = "Core utilities for Python packages"
 category = "main"
 optional = false
@@ -312,7 +335,6 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [package.dependencies]
 pyparsing = ">=2.0.2"
-six = "*"
 
 [[package]]
 name = "pexpect"
@@ -327,7 +349,7 @@ ptyprocess = ">=0.5"
 
 [[package]]
 name = "pkginfo"
-version = "1.6.1"
+version = "1.7.0"
 description = "Query metadatdata from sdists / bdists / installed packages."
 category = "main"
 optional = false
@@ -352,7 +374,7 @@ dev = ["pre-commit", "tox"]
 
 [[package]]
 name = "poetry-core"
-version = "1.0.0"
+version = "1.0.2"
 description = "Poetry PEP 517 Build Backend"
 category = "main"
 optional = false
@@ -363,7 +385,7 @@ importlib-metadata = {version = ">=1.7.0,<2.0.0", markers = "python_version >= \
 
 [[package]]
 name = "pre-commit"
-version = "2.9.0"
+version = "2.10.1"
 description = "A framework for managing and maintaining multi-language pre-commit hooks."
 category = "dev"
 optional = false
@@ -381,7 +403,7 @@ virtualenv = ">=20.0.8"
 
 [[package]]
 name = "ptyprocess"
-version = "0.6.0"
+version = "0.7.0"
 description = "Run a subprocess in a pseudo terminal"
 category = "main"
 optional = false
@@ -389,7 +411,7 @@ python-versions = "*"
 
 [[package]]
 name = "py"
-version = "1.9.0"
+version = "1.10.0"
 description = "library with cross-python path, ini-parsing, io, code, log facilities"
 category = "dev"
 optional = false
@@ -444,14 +466,14 @@ testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xm
 
 [[package]]
 name = "pytest-cov"
-version = "2.10.1"
+version = "2.11.1"
 description = "Pytest plugin for measuring coverage."
 category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [package.dependencies]
-coverage = ">=4.4"
+coverage = ">=5.2.1"
 pytest = ">=4.6"
 
 [package.extras]
@@ -494,15 +516,15 @@ python-versions = "*"
 
 [[package]]
 name = "pyyaml"
-version = "5.3.1"
+version = "5.4.1"
 description = "YAML parser and emitter for Python"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*"
 
 [[package]]
 name = "requests"
-version = "2.25.0"
+version = "2.25.1"
 description = "Python HTTP for Humans."
 category = "main"
 optional = false
@@ -510,7 +532,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [package.dependencies]
 certifi = ">=2017.4.17"
-chardet = ">=3.0.2,<4"
+chardet = ">=3.0.2,<5"
 idna = ">=2.5,<3"
 urllib3 = ">=1.21.1,<1.27"
 
@@ -531,19 +553,19 @@ requests = ">=2.0.1,<3.0.0"
 
 [[package]]
 name = "secretstorage"
-version = "3.2.0"
+version = "3.3.1"
 description = "Python bindings to FreeDesktop.org Secret Service API"
 category = "main"
 optional = false
-python-versions = ">=3.5"
+python-versions = ">=3.6"
 
 [package.dependencies]
 cryptography = ">=2.0"
-jeepney = ">=0.4.2"
+jeepney = ">=0.6"
 
 [[package]]
 name = "shellingham"
-version = "1.3.2"
+version = "1.4.0"
 description = "Tool to Detect Surrounding Shell"
 category = "main"
 optional = false
@@ -583,7 +605,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [[package]]
 name = "tox"
-version = "3.20.1"
+version = "3.21.4"
 description = "tox is a generic virtualenv management and test command line tool"
 category = "dev"
 optional = false
@@ -592,7 +614,7 @@ python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
 [package.dependencies]
 colorama = {version = ">=0.4.1", markers = "platform_system == \"Windows\""}
 filelock = ">=3.0.0"
-importlib-metadata = {version = ">=0.12,<3", markers = "python_version < \"3.8\""}
+importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
 packaging = ">=14"
 pluggy = ">=0.12.0"
 py = ">=1.4.17"
@@ -602,7 +624,7 @@ virtualenv = ">=16.0.0,<20.0.0 || >20.0.0,<20.0.1 || >20.0.1,<20.0.2 || >20.0.2,
 
 [package.extras]
 docs = ["pygments-github-lexers (>=0.0.5)", "sphinx (>=2.0.0)", "sphinxcontrib-autoprogram (>=0.1.5)", "towncrier (>=18.5.0)"]
-testing = ["flaky (>=3.4.0)", "freezegun (>=0.3.11)", "pathlib2 (>=2.3.3)", "psutil (>=5.6.1)", "pytest (>=4.0.0)", "pytest-cov (>=2.5.1)", "pytest-mock (>=1.10.0)", "pytest-randomly (>=1.0.0)", "pytest-xdist (>=1.22.2)"]
+testing = ["flaky (>=3.4.0)", "freezegun (>=0.3.11)", "psutil (>=5.6.1)", "pytest (>=4.0.0)", "pytest-cov (>=2.5.1)", "pytest-mock (>=1.10.0)", "pytest-randomly (>=1.0.0)", "pytest-xdist (>=1.22.2)", "pathlib2 (>=2.3.3)"]
 
 [[package]]
 name = "urllib3"
@@ -619,7 +641,7 @@ socks = ["PySocks (>=1.5.6,!=1.5.7,<2.0)"]
 
 [[package]]
 name = "virtualenv"
-version = "20.2.1"
+version = "20.4.2"
 description = "Virtual Python Environment builder"
 category = "main"
 optional = false
@@ -635,7 +657,7 @@ six = ">=1.9.0,<2"
 
 [package.extras]
 docs = ["proselint (>=0.10.2)", "sphinx (>=3)", "sphinx-argparse (>=0.2.5)", "sphinx-rtd-theme (>=0.4.3)", "towncrier (>=19.9.0rc1)"]
-testing = ["coverage (>=4)", "coverage-enable-subprocess (>=1)", "flaky (>=3)", "pytest (>=4)", "pytest-env (>=0.6.2)", "pytest-freezegun (>=0.4.1)", "pytest-mock (>=2)", "pytest-randomly (>=1)", "pytest-timeout (>=1)", "pytest-xdist (>=1.31.0)", "packaging (>=20.0)", "xonsh (>=0.9.16)"]
+testing = ["coverage (>=4)", "coverage-enable-subprocess (>=1)", "flaky (>=3)", "pytest (>=4)", "pytest-env (>=0.6.2)", "pytest-freezegun (>=0.4.1)", "pytest-mock (>=2)", "pytest-randomly (>=1)", "pytest-timeout (>=1)", "packaging (>=20.0)", "xonsh (>=0.9.16)"]
 
 [[package]]
 name = "wcwidth"
@@ -668,7 +690,7 @@ testing = ["pytest (>=3.5,!=3.7.3)", "pytest-checkdocs (>=1.2.3)", "pytest-flake
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.6"
-content-hash = "c495920c853f794d4046d2d4cc47410ea076d4647e54fd3364e46051d5f18da3"
+content-hash = "7be94febcf595ed6e9dbdb971182ee345efc8d2017ab6c559a042e3e5db00565"
 
 [metadata.files]
 appdirs = [
@@ -692,54 +714,55 @@ cachy = [
     {file = "cachy-0.3.0.tar.gz", hash = "sha256:186581f4ceb42a0bbe040c407da73c14092379b1e4c0e327fdb72ae4a9b269b1"},
 ]
 certifi = [
-    {file = "certifi-2020.11.8-py2.py3-none-any.whl", hash = "sha256:1f422849db327d534e3d0c5f02a263458c3955ec0aae4ff09b95f195c59f4edd"},
-    {file = "certifi-2020.11.8.tar.gz", hash = "sha256:f05def092c44fbf25834a51509ef6e631dc19765ab8a57b4e7ab85531f0a9cf4"},
+    {file = "certifi-2020.12.5-py2.py3-none-any.whl", hash = "sha256:719a74fb9e33b9bd44cc7f3a8d94bc35e4049deebe19ba7d8e108280cfd59830"},
+    {file = "certifi-2020.12.5.tar.gz", hash = "sha256:1a4995114262bffbc2413b159f2a1a480c969de6e6eb13ee966d470af86af59c"},
 ]
 cffi = [
-    {file = "cffi-1.14.3-2-cp27-cp27m-macosx_10_9_x86_64.whl", hash = "sha256:3eeeb0405fd145e714f7633a5173318bd88d8bbfc3dd0a5751f8c4f70ae629bc"},
-    {file = "cffi-1.14.3-2-cp35-cp35m-macosx_10_9_x86_64.whl", hash = "sha256:cb763ceceae04803adcc4e2d80d611ef201c73da32d8f2722e9d0ab0c7f10768"},
-    {file = "cffi-1.14.3-2-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:44f60519595eaca110f248e5017363d751b12782a6f2bd6a7041cba275215f5d"},
-    {file = "cffi-1.14.3-2-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:c53af463f4a40de78c58b8b2710ade243c81cbca641e34debf3396a9640d6ec1"},
-    {file = "cffi-1.14.3-2-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:33c6cdc071ba5cd6d96769c8969a0531be2d08c2628a0143a10a7dcffa9719ca"},
-    {file = "cffi-1.14.3-2-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:c11579638288e53fc94ad60022ff1b67865363e730ee41ad5e6f0a17188b327a"},
-    {file = "cffi-1.14.3-cp27-cp27m-manylinux1_i686.whl", hash = "sha256:3cb3e1b9ec43256c4e0f8d2837267a70b0e1ca8c4f456685508ae6106b1f504c"},
-    {file = "cffi-1.14.3-cp27-cp27m-manylinux1_x86_64.whl", hash = "sha256:f0620511387790860b249b9241c2f13c3a80e21a73e0b861a2df24e9d6f56730"},
-    {file = "cffi-1.14.3-cp27-cp27m-win32.whl", hash = "sha256:005f2bfe11b6745d726dbb07ace4d53f057de66e336ff92d61b8c7e9c8f4777d"},
-    {file = "cffi-1.14.3-cp27-cp27m-win_amd64.whl", hash = "sha256:2f9674623ca39c9ebe38afa3da402e9326c245f0f5ceff0623dccdac15023e05"},
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-    {file = "cffi-1.14.3-cp35-cp35m-manylinux1_i686.whl", hash = "sha256:0ef488305fdce2580c8b2708f22d7785ae222d9825d3094ab073e22e93dfe51f"},
-    {file = "cffi-1.14.3-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:0b1ad452cc824665ddc682400b62c9e4f5b64736a2ba99110712fdee5f2505c4"},
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-    {file = "cffi-1.14.3-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:4d7c26bfc1ea9f92084a1d75e11999e97b62d63128bcc90c3624d07813c52808"},
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-    {file = "cffi-1.14.3-cp37-cp37m-win_amd64.whl", hash = "sha256:6642f15ad963b5092d65aed022d033c77763515fdc07095208f15d3563003869"},
-    {file = "cffi-1.14.3-cp38-cp38-manylinux1_i686.whl", hash = "sha256:2791f68edc5749024b4722500e86303a10d342527e1e3bcac47f35fbd25b764e"},
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 requests = [
-    {file = "requests-2.25.0-py2.py3-none-any.whl", hash = "sha256:e786fa28d8c9154e6a4de5d46a1d921b8749f8b74e28bde23768e5e16eece998"},
-    {file = "requests-2.25.0.tar.gz", hash = "sha256:7f1a0b932f4a60a1a65caa4263921bb7d9ee911957e0ae4a23a6dd08185ad5f8"},
+    {file = "requests-2.25.1-py2.py3-none-any.whl", hash = "sha256:c210084e36a42ae6b9219e00e48287def368a26d03a048ddad7bfee44f75871e"},
+    {file = "requests-2.25.1.tar.gz", hash = "sha256:27973dd4a904a4f13b263a19c866c13b92a39ed1c964655f025f3f8d3d75b804"},
 ]
 requests-toolbelt = [
     {file = "requests-toolbelt-0.9.1.tar.gz", hash = "sha256:968089d4584ad4ad7c171454f0a5c6dac23971e9472521ea3b6d49d610aa6fc0"},
     {file = "requests_toolbelt-0.9.1-py2.py3-none-any.whl", hash = "sha256:380606e1d10dc85c3bd47bf5a6095f815ec007be7a8b69c878507068df059e6f"},
 ]
 secretstorage = [
-    {file = "SecretStorage-3.2.0-py3-none-any.whl", hash = "sha256:ed5279d788af258e4676fa26b6efb6d335a31f1f9f529b6f1e200f388fac33e1"},
-    {file = "SecretStorage-3.2.0.tar.gz", hash = "sha256:46305c3847ee3f7252b284e0eee5590fa6341c891104a2fd2313f8798c615a82"},
+    {file = "SecretStorage-3.3.1-py3-none-any.whl", hash = "sha256:422d82c36172d88d6a0ed5afdec956514b189ddbfb72fefab0c8a1cee4eaf71f"},
+    {file = "SecretStorage-3.3.1.tar.gz", hash = "sha256:fd666c51a6bf200643495a04abb261f83229dcb6fd8472ec393df7ffc8b6f195"},
 ]
 shellingham = [
-    {file = "shellingham-1.3.2-py2.py3-none-any.whl", hash = "sha256:7f6206ae169dc1a03af8a138681b3f962ae61cc93ade84d0585cca3aaf770044"},
-    {file = "shellingham-1.3.2.tar.gz", hash = "sha256:576c1982bea0ba82fb46c36feb951319d7f42214a82634233f58b40d858a751e"},
+    {file = "shellingham-1.4.0-py2.py3-none-any.whl", hash = "sha256:536b67a0697f2e4af32ab176c00a50ac2899c5a05e0d8e2dadac8e58888283f9"},
+    {file = "shellingham-1.4.0.tar.gz", hash = "sha256:4855c2458d6904829bd34c299f11fdeed7cfefbf8a2c522e4caea6cd76b3171e"},
 ]
 six = [
     {file = "six-1.15.0-py2.py3-none-any.whl", hash = "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"},
@@ -992,16 +1038,16 @@ tomlkit = [
     {file = "tomlkit-0.7.0.tar.gz", hash = "sha256:ac57f29693fab3e309ea789252fcce3061e19110085aa31af5446ca749325618"},
 ]
 tox = [
-    {file = "tox-3.20.1-py2.py3-none-any.whl", hash = "sha256:42ce19ce5dc2f6d6b1fdc5666c476e1f1e2897359b47e0aa3a5b774f335d57c2"},
-    {file = "tox-3.20.1.tar.gz", hash = "sha256:4321052bfe28f9d85082341ca8e233e3ea901fdd14dab8a5d3fbd810269fbaf6"},
+    {file = "tox-3.21.4-py2.py3-none-any.whl", hash = "sha256:65d0e90ceb816638a50d64f4b47b11da767b284c0addda2294cb3cd69bd72425"},
+    {file = "tox-3.21.4.tar.gz", hash = "sha256:cf7fef81a3a2434df4d7af2a6d1bf606d2970220addfbe7dea2615bd4bb2c252"},
 ]
 urllib3 = [
     {file = "urllib3-1.25.10-py2.py3-none-any.whl", hash = "sha256:e7983572181f5e1522d9c98453462384ee92a0be7fac5f1413a1e35c56cc0461"},
     {file = "urllib3-1.25.10.tar.gz", hash = "sha256:91056c15fa70756691db97756772bb1eb9678fa585d9184f24534b100dc60f4a"},
 ]
 virtualenv = [
-    {file = "virtualenv-20.2.1-py2.py3-none-any.whl", hash = "sha256:07cff122e9d343140366055f31be4dcd61fd598c69d11cd33a9d9c8df4546dd7"},
-    {file = "virtualenv-20.2.1.tar.gz", hash = "sha256:e0aac7525e880a429764cefd3aaaff54afb5d9f25c82627563603f5d7de5a6e5"},
+    {file = "virtualenv-20.4.2-py2.py3-none-any.whl", hash = "sha256:2be72df684b74df0ea47679a7df93fd0e04e72520022c57b479d8f881485dbe3"},
+    {file = "virtualenv-20.4.2.tar.gz", hash = "sha256:147b43894e51dd6bba882cf9c282447f780e2251cd35172403745fc381a0a80d"},
 ]
 wcwidth = [
     {file = "wcwidth-0.2.5-py2.py3-none-any.whl", hash = "sha256:beb4802a9cebb9144e99086eff703a642a13d6a0052920003a230f3294bbe784"},
diff --git a/poetry/installation/pip_installer.py b/poetry/installation/pip_installer.py
index e84774d39ca..d023d0525ee 100644
--- a/poetry/installation/pip_installer.py
+++ b/poetry/installation/pip_installer.py
@@ -39,7 +39,7 @@ def install(self, package: "Package", update: bool = False) -> None:
 
             return
 
-        args = ["install", "--no-deps"]
+        args = ["install", "--no-deps", "--use-pep517"]
 
         if (
             package.source_type not in {"git", "directory", "file", "url"}
@@ -193,7 +193,7 @@ def install_directory(self, package: "Package") -> Union[str, int]:
         else:
             req = os.path.realpath(package.source_url)
 
-        args = ["install", "--no-deps", "-U"]
+        args = ["install", "--no-deps", "--use-pep517", "-U"]
 
         pyproject = PyProjectTOML(os.path.join(req, "pyproject.toml"))
 
diff --git a/poetry/puzzle/provider.py b/poetry/puzzle/provider.py
index 6c4823a8d69..564046c90be 100644
--- a/poetry/puzzle/provider.py
+++ b/poetry/puzzle/provider.py
@@ -54,7 +54,7 @@ def _formatter_elapsed(self) -> str:
 
 class Provider:
 
-    UNSAFE_PACKAGES = {"setuptools", "distribute", "pip", "wheel"}
+    UNSAFE_PACKAGES = {"pip"}
 
     def __init__(
         self, package: Package, pool: Pool, io: Any, env: Optional[Env] = None
diff --git a/pyproject.toml b/pyproject.toml
index 562bfe68901..acd7c503cc9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -52,6 +52,7 @@ httpretty = "^1.0"
 zipp = { version = "^3.4", python = "<3.8"}
 # temporary workaround for https://github.com/python-poetry/poetry/issues/3404
 urllib3 = "1.25.10"
+deepdiff = "^5.2"
 
 [tool.poetry.scripts]
 poetry = "poetry.console.application:main"
diff --git a/tests/fixtures/simple_project/pyproject.toml b/tests/fixtures/simple_project/pyproject.toml
index 0fd938e41a0..cd1b8d2003f 100644
--- a/tests/fixtures/simple_project/pyproject.toml
+++ b/tests/fixtures/simple_project/pyproject.toml
@@ -23,6 +23,7 @@ classifiers = [
 # Requirements
 [tool.poetry.dependencies]
 python = "~2.7 || ^3.4"
+cachy = {version = "0.2.0", source = "my-index"}
 
 [tool.poetry.scripts]
 foo = "foo:bar"
diff --git a/tests/installation/fixtures/with-pypi-repository.test b/tests/installation/fixtures/with-pypi-repository.test
index 3f3719452d9..06496c39f17 100644
--- a/tests/installation/fixtures/with-pypi-repository.test
+++ b/tests/installation/fixtures/with-pypi-repository.test
@@ -68,9 +68,22 @@ six = ">=1.10.0"
 attrs = ">=17.4.0"
 more-itertools = ">=4.0.0"
 pluggy = ">=0.5,<0.7"
+setuptools = "*"
 funcsigs = {"version" = "*", "markers" = "python_version < \"3.0\""}
 colorama = {"version" = "*", "markers" = "sys_platform == \"win32\""}
 
+[[package]]
+name = "setuptools"
+version = "39.2.0"
+description = "Easily download, build, install, upgrade, and uninstall Python packages"
+category = "dev"
+optional = false
+python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*"
+
+[package.extras]
+certs = ["certifi (==2016.9.26)"]
+ssl = ["wincertstore (==0.2)"]
+
 [[package]]
 name = "six"
 version = "1.11.0"
@@ -113,6 +126,11 @@ pytest = [
     {file = "pytest-3.5.0-py2.py3-none-any.whl", hash = "sha256:6266f87ab64692112e5477eba395cfedda53b1933ccd29478e671e73b420c19c"},
     {file = "pytest-3.5.0.tar.gz", hash = "sha256:fae491d1874f199537fd5872b5e1f0e74a009b979df9d53d1553fd03da1703e1"},
 ]
+setuptools = [
+    {file = "setuptools-39.2.0-py2.py3-none-any.whl", hash = "sha256:8fca9275c89964f13da985c3656cb00ba029d7f3916b37990927ffdf264e7926"},
+    {file = "setuptools-39.2.0.zip", "hash" = "sha256:f7cddbb5f5c640311eb00eab6e849f7701fa70bf6a183fc8a2c33dd1d1672fb2"}
+]
+
 six = [
     {file = "six-1.11.0-py2.py3-none-any.whl", hash = "sha256:832dc0e10feb1aa2c68dcc57dbb658f1c7e65b9b61af69048abc87a2db00a0eb"},
     {file = "six-1.11.0.tar.gz", hash = "sha256:70e8a77beed4562e7f14fe23a786b54f6296e34344c23bc42f07b15018ff98e9"},
diff --git a/tests/installation/test_installer.py b/tests/installation/test_installer.py
index 32eb63149ea..8ada86f4750 100644
--- a/tests/installation/test_installer.py
+++ b/tests/installation/test_installer.py
@@ -8,6 +8,7 @@
 import pytest
 
 from cleo.io.null_io import NullIO
+from deepdiff import DeepDiff
 
 from poetry.core.packages import ProjectPackage
 from poetry.core.toml.file import TOMLFile
@@ -388,15 +389,19 @@ def test_run_install_remove_untracked(installer, locker, repo, package, installe
     package_b = get_package("b", "1.1")
     package_c = get_package("c", "1.2")
     package_pip = get_package("pip", "20.0.0")
+    package_setuptools = get_package("setuptools", "20.0.0")
+
     repo.add_package(package_a)
     repo.add_package(package_b)
     repo.add_package(package_c)
     repo.add_package(package_pip)
+    repo.add_package(package_setuptools)
 
     installed.add_package(package_a)
     installed.add_package(package_b)
     installed.add_package(package_c)
-    installed.add_package(package_pip)  # Always required and never removed.
+    installed.add_package(package_pip)
+    installed.add_package(package_setuptools)
     installed.add_package(package)  # Root package never removed.
 
     package.add_dependency(Factory.create_dependency("A", "~1.0"))
@@ -406,8 +411,8 @@ def test_run_install_remove_untracked(installer, locker, repo, package, installe
 
     assert 0 == installer.executor.installations_count
     assert 0 == installer.executor.updates_count
-    assert 2 == installer.executor.removals_count
-    assert {"b", "c"} == set(r.name for r in installer.executor.removals)
+    assert 3 == installer.executor.removals_count
+    assert {"b", "c", "setuptools"} == set(r.name for r in installer.executor.removals)
 
 
 def test_run_whitelist_add(installer, locker, repo, package):
@@ -449,7 +454,7 @@ def test_run_whitelist_add(installer, locker, repo, package):
     installer.run()
     expected = fixture("with-dependencies")
 
-    assert locker.written_data == expected
+    assert not DeepDiff(locker.written_data, expected, ignore_order=True)
 
 
 def test_run_whitelist_remove(installer, locker, repo, package, installed):
@@ -1604,7 +1609,7 @@ def test_installer_required_extras_should_not_be_removed_when_updating_single_de
     installer.whitelist(["pytest"])
     installer.run()
 
-    assert 6 == installer.executor.installations_count
+    assert 7 == installer.executor.installations_count
     assert 0 == installer.executor.updates_count
     assert 0 == installer.executor.removals_count
 
diff --git a/tests/installation/test_installer_old.py b/tests/installation/test_installer_old.py
index 21c66e2a176..296833c1135 100644
--- a/tests/installation/test_installer_old.py
+++ b/tests/installation/test_installer_old.py
@@ -1505,7 +1505,7 @@ def test_installer_required_extras_should_not_be_removed_when_updating_single_de
     installer.whitelist(["pytest"])
     installer.run()
 
-    assert len(installer.installer.installs) == 6
+    assert len(installer.installer.installs) == 7
     assert len(installer.installer.updates) == 0
     assert len(installer.installer.removals) == 0
 
diff --git a/tests/mixology/version_solver/test_python_constraint.py b/tests/mixology/version_solver/test_python_constraint.py
index 739b11500ea..fb3c2eb1d42 100644
--- a/tests/mixology/version_solver/test_python_constraint.py
+++ b/tests/mixology/version_solver/test_python_constraint.py
@@ -15,7 +15,7 @@ def test_dependency_does_not_match_root_python_constraint(root, provider, repo):
   - foo requires Python <3.5, so it will not be satisfied for Python >=3.6,<4.0
 
 Because no versions of foo match !=1.0.0
- and foo (1.0.0) requires Python <3.5, foo is forbidden.
-So, because myapp depends on foo (*), version solving failed."""
+ and foo (==1.0.0) requires Python <3.5, foo is forbidden.
+So, because myapp depends on foo, version solving failed."""
 
     check_solver_result(root, provider, error=error)
diff --git a/tests/mixology/version_solver/test_unsolvable.py b/tests/mixology/version_solver/test_unsolvable.py
index 6baa7880490..f2217043c0a 100644
--- a/tests/mixology/version_solver/test_unsolvable.py
+++ b/tests/mixology/version_solver/test_unsolvable.py
@@ -14,7 +14,7 @@ def test_no_version_matching_constraint(root, provider, repo):
         root,
         provider,
         error=(
-            "Because myapp depends on foo (^1.0) "
+            "Because myapp depends on foo (>=1.0,<2.0) "
             "which doesn't match any versions, version solving failed."
         ),
     )
@@ -30,10 +30,10 @@ def test_no_version_that_matches_combined_constraints(root, provider, repo):
     add_to_repo(repo, "shared", "3.5.0")
 
     error = """\
-Because foo (1.0.0) depends on shared (>=2.0.0 <3.0.0)
- and no versions of shared match >=2.9.0,<3.0.0, foo (1.0.0) requires shared (>=2.0.0,<2.9.0).
-And because bar (1.0.0) depends on shared (>=2.9.0 <4.0.0), bar (1.0.0) is incompatible with foo (1.0.0).
-So, because myapp depends on both foo (1.0.0) and bar (1.0.0), version solving failed."""
+Because foo (==1.0.0) depends on shared (>=2.0.0,<3.0.0)
+ and no versions of shared match >=2.9.0,<3.0.0, foo (==1.0.0) requires shared (>=2.0.0,<2.9.0).
+And because bar (==1.0.0) depends on shared (>=2.9.0,<4.0.0), bar (==1.0.0) is incompatible with foo (==1.0.0).
+So, because myapp depends on both foo (==1.0.0) and bar (==1.0.0), version solving failed."""
 
     check_solver_result(root, provider, error=error)
 
@@ -48,9 +48,9 @@ def test_disjoint_constraints(root, provider, repo):
     add_to_repo(repo, "shared", "4.0.0")
 
     error = """\
-Because bar (1.0.0) depends on shared (>3.0.0)
- and foo (1.0.0) depends on shared (<=2.0.0), bar (1.0.0) is incompatible with foo (1.0.0).
-So, because myapp depends on both foo (1.0.0) and bar (1.0.0), version solving failed."""
+Because bar (==1.0.0) depends on shared (>3.0.0)
+ and foo (==1.0.0) depends on shared (<=2.0.0), bar (==1.0.0) is incompatible with foo (==1.0.0).
+So, because myapp depends on both foo (==1.0.0) and bar (==1.0.0), version solving failed."""
 
     check_solver_result(root, provider, error=error)
     check_solver_result(root, provider, error=error)
@@ -64,7 +64,7 @@ def test_disjoint_root_constraints(root, provider, repo):
     add_to_repo(repo, "foo", "2.0.0")
 
     error = """\
-Because myapp depends on both foo (1.0.0) and foo (2.0.0), version solving failed."""
+Because myapp depends on both foo (==1.0.0) and foo (==2.0.0), version solving failed."""
 
     check_solver_result(root, provider, error=error)
 
@@ -81,10 +81,10 @@ def test_no_valid_solution(root, provider, repo):
 
     error = """\
 Because no versions of b match <1.0.0 || >1.0.0,<2.0.0 || >2.0.0
- and b (1.0.0) depends on a (2.0.0), b (!=2.0.0) requires a (2.0.0).
-And because a (2.0.0) depends on b (2.0.0), b is forbidden.
-Because b (2.0.0) depends on a (1.0.0) which depends on b (1.0.0), b is forbidden.
+ and b (==1.0.0) depends on a (==2.0.0), b (!=2.0.0) requires a (==2.0.0).
+And because a (==2.0.0) depends on b (==2.0.0), b is forbidden.
+Because b (==2.0.0) depends on a (==1.0.0) which depends on b (==1.0.0), b is forbidden.
 Thus, b is forbidden.
-So, because myapp depends on b (*), version solving failed."""
+So, because myapp depends on b, version solving failed."""
 
     check_solver_result(root, provider, error=error, tries=2)