mypy patch is failing

[jmgilman]

Describe the issue

Attempting to build any of the .9xx versions of mypy is failing with the following error:

applying patch /nix/store/24dg2l8h5mf9hvmw26izbzm5zyicbi23-f1755259d54330cd087cae763cd5bbbff26e3e8a.patch
can't find file to patch at input line 3
Perhaps you used the wrong -p or --strip option?

Additional context

I'm assuming the offending line is here. The only way I was able to get it to build for me was by removing the patch. See here.

• default.nix/shell.nix/flake.nix

{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs";
    flake-utils.url = "github:numtide/flake-utils";
    poetry2nix-src.url = github:nix-community/poetry2nix;
  };

  outputs = { self, nixpkgs, flake-utils, poetry2nix-src }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          overlays = [ poetry2nix-src.overlay ];
        };

        poetry = pkgs.poetry2nix.mkPoetryEnv {
          projectDir = ./.;
          python = pkgs.python310;
          preferWheels = true;
          overrides = [
            pkgs.poetry2nix.defaultPoetryOverrides
          ];
        };
      in {
        devShell = pkgs.mkShell {
          packages = [poetry];
        };
      }
    );
}

• pyproject.toml

[tool.poetry]
name = "budgeteer"
version = "0.1.0"
description = "An HTTP API for managing financial budgets."
authors = ["Joshua Gilman <[email protected]>"]
license = "MIT"

[tool.poetry.dependencies]
python = "^3.10"

[tool.poetry.dev-dependencies]
pre-commit = "^2.17.0"
gitlint = "^0.17.0"
mdformat = "^0.7.13"
mdformat_tables = "^0.4.1"
black = "^22.1.0"
flake8 = "^4.0.1"
bandit = "^1.7.3"
isort = "^5.10.1"
mypy = "^0.931"

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

• poetry.lock

[[package]]
name = "arrow"
version = "1.2.1"
description = "Better dates & times for Python"
category = "dev"
optional = false
python-versions = ">=3.6"

[package.dependencies]
python-dateutil = ">=2.7.0"

[[package]]
name = "attrs"
version = "21.4.0"
description = "Classes Without Boilerplate"
category = "dev"
optional = false
python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"

[package.extras]
dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "zope.interface", "furo", "sphinx", "sphinx-notfound-page", "pre-commit", "cloudpickle"]
docs = ["furo", "sphinx", "zope.interface", "sphinx-notfound-page"]
tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "zope.interface", "cloudpickle"]
tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "cloudpickle"]

[[package]]
name = "bandit"
version = "1.7.3"
description = "Security oriented static analyser for python code."
category = "dev"
optional = false
python-versions = ">=3.7"

[package.dependencies]
colorama = {version = ">=0.3.9", markers = "platform_system == \"Windows\""}
GitPython = ">=1.0.1"
PyYAML = ">=5.3.1"
stevedore = ">=1.20.0"

[package.extras]
test = ["coverage (>=4.5.4)", "fixtures (>=3.0.0)", "flake8 (>=4.0.0)", "stestr (>=2.5.0)", "testscenarios (>=0.5.0)", "testtools (>=2.3.0)", "toml", "beautifulsoup4 (>=4.8.0)", "pylint (==1.9.4)"]
toml = ["toml"]
yaml = ["pyyaml"]

[[package]]
name = "black"
version = "22.1.0"
description = "The uncompromising code formatter."
category = "dev"
optional = false
python-versions = ">=3.6.2"

[package.dependencies]
click = ">=8.0.0"
mypy-extensions = ">=0.4.3"
pathspec = ">=0.9.0"
platformdirs = ">=2"
tomli = ">=1.1.0"

[package.extras]
colorama = ["colorama (>=0.4.3)"]
d = ["aiohttp (>=3.7.4)"]
jupyter = ["ipython (>=7.8.0)", "tokenize-rt (>=3.2.0)"]
uvloop = ["uvloop (>=0.15.2)"]

[[package]]
name = "cfgv"
version = "3.3.1"
description = "Validate configuration and produce human readable error messages."
category = "dev"
optional = false
python-versions = ">=3.6.1"

[[package]]
name = "click"
version = "8.0.3"
description = "Composable command line interface toolkit"
category = "dev"
optional = false
python-versions = ">=3.6"

[package.dependencies]
colorama = {version = "*", markers = "platform_system == \"Windows\""}

[[package]]
name = "colorama"
version = "0.4.4"
description = "Cross-platform colored terminal text."
category = "dev"
optional = false
python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"

[[package]]
name = "distlib"
version = "0.3.4"
description = "Distribution utilities"
category = "dev"
optional = false
python-versions = "*"

[[package]]
name = "filelock"
version = "3.6.0"
description = "A platform independent file lock."
category = "dev"
optional = false
python-versions = ">=3.7"

[package.extras]
docs = ["furo (>=2021.8.17b43)", "sphinx (>=4.1)", "sphinx-autodoc-typehints (>=1.12)"]
testing = ["covdefaults (>=1.2.0)", "coverage (>=4)", "pytest (>=4)", "pytest-cov", "pytest-timeout (>=1.4.2)"]

[[package]]
name = "flake8"
version = "4.0.1"
description = "the modular source code checker: pep8 pyflakes and co"
category = "dev"
optional = false
python-versions = ">=3.6"

[package.dependencies]
mccabe = ">=0.6.0,<0.7.0"
pycodestyle = ">=2.8.0,<2.9.0"
pyflakes = ">=2.4.0,<2.5.0"

[[package]]
name = "gitdb"
version = "4.0.9"
description = "Git Object Database"
category = "dev"
optional = false
python-versions = ">=3.6"

[package.dependencies]
smmap = ">=3.0.1,<6"

[[package]]
name = "gitlint"
version = "0.17.0"
description = "Git commit message linter written in python, checks your commit messages for style."
category = "dev"
optional = false
python-versions = ">=3.6"

[package.dependencies]
gitlint-core = {version = "0.17.0", extras = ["trusted-deps"]}

[[package]]
name = "gitlint-core"
version = "0.17.0"
description = "Git commit message linter written in python, checks your commit messages for style."
category = "dev"
optional = false
python-versions = ">=3.6"

[package.dependencies]
arrow = [
    {version = ">=1"},
    {version = "1.2.1", optional = true, markers = "extra == \"trusted-deps\""},
]
Click = [
    {version = ">=8"},
    {version = "8.0.3", optional = true, markers = "extra == \"trusted-deps\""},
]
sh = [
    {version = ">=1.13.0", markers = "sys_platform != \"win32\""},
    {version = "1.14.2", optional = true, markers = "sys_platform != \"win32\" or sys_platform != \"win32\" and extra == \"trusted-deps\""},
]

[package.extras]
trusted-deps = ["Click (==8.0.3)", "arrow (==1.2.1)", "sh (==1.14.2)"]

[[package]]
name = "gitpython"
version = "3.1.27"
description = "GitPython is a python library used to interact with Git repositories"
category = "dev"
optional = false
python-versions = ">=3.7"

[package.dependencies]
gitdb = ">=4.0.1,<5"

[[package]]
name = "identify"
version = "2.4.11"
description = "File identification library for Python"
category = "dev"
optional = false
python-versions = ">=3.7"

[package.extras]
license = ["ukkonen"]

[[package]]
name = "isort"
version = "5.10.1"
description = "A Python utility / library to sort Python imports."
category = "dev"
optional = false
python-versions = ">=3.6.1,<4.0"

[package.extras]
pipfile_deprecated_finder = ["pipreqs", "requirementslib"]
requirements_deprecated_finder = ["pipreqs", "pip-api"]
colors = ["colorama (>=0.4.3,<0.5.0)"]
plugins = ["setuptools"]

[[package]]
name = "markdown-it-py"
version = "2.0.1"
description = "Python port of markdown-it. Markdown parsing, done right!"
category = "dev"
optional = false
python-versions = "~=3.6"

[package.dependencies]
attrs = ">=19,<22"
mdurl = ">=0.1,<1.0"

[package.extras]
benchmarking = ["psutil", "pytest", "pytest-benchmark (>=3.2,<4.0)"]
code_style = ["pre-commit (==2.6)"]
compare = ["commonmark (>=0.9.1,<0.10.0)", "markdown (>=3.2.2,<3.3.0)", "mistletoe-ebp (>=0.10.0,<0.11.0)", "mistune (>=0.8.4,<0.9.0)", "panflute (>=1.12,<2.0)"]
linkify = ["linkify-it-py (>=1.0,<2.0)"]
plugins = ["mdit-py-plugins"]
rtd = ["myst-nb (==0.13.0a1)", "pyyaml", "sphinx (>=2,<4)", "sphinx-copybutton", "sphinx-panels (>=0.4.0,<0.5.0)", "sphinx-book-theme"]
testing = ["coverage", "pytest", "pytest-cov", "pytest-regressions"]

[[package]]
name = "mccabe"
version = "0.6.1"
description = "McCabe checker, plugin for flake8"
category = "dev"
optional = false
python-versions = "*"

[[package]]
name = "mdformat"
version = "0.7.13"
description = "CommonMark compliant Markdown formatter"
category = "dev"
optional = false
python-versions = ">=3.7,<4.0"

[package.dependencies]
markdown-it-py = ">=1.0.0b2,<3.0.0"
tomli = ">=1.1.0"

[[package]]
name = "mdformat-tables"
version = "0.4.1"
description = "An mdformat plugin for rendering tables."
category = "dev"
optional = false
python-versions = ">=3.6.1"

[package.dependencies]
mdformat = ">=0.7.5,<0.8.0"

[package.extras]
test = ["pytest (>=6.0,<7.0)", "coverage", "pytest-cov"]

[[package]]
name = "mdurl"
version = "0.1.0"
description = "Markdown URL utilities"
category = "dev"
optional = false
python-versions = ">=3.6"

[[package]]
name = "mypy"
version = "0.931"
description = "Optional static typing for Python"
category = "dev"
optional = false
python-versions = ">=3.6"

[package.dependencies]
mypy-extensions = ">=0.4.3"
tomli = ">=1.1.0"
typing-extensions = ">=3.10"

[package.extras]
dmypy = ["psutil (>=4.0)"]
python2 = ["typed-ast (>=1.4.0,<2)"]

[[package]]
name = "mypy-extensions"
version = "0.4.3"
description = "Experimental type system extensions for programs checked with the mypy typechecker."
category = "dev"
optional = false
python-versions = "*"

[[package]]
name = "nodeenv"
version = "1.6.0"
description = "Node.js virtual environment builder"
category = "dev"
optional = false
python-versions = "*"

[[package]]
name = "pathspec"
version = "0.9.0"
description = "Utility library for gitignore style pattern matching of file paths."
category = "dev"
optional = false
python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"

[[package]]
name = "pbr"
version = "5.8.1"
description = "Python Build Reasonableness"
category = "dev"
optional = false
python-versions = ">=2.6"

[[package]]
name = "platformdirs"
version = "2.5.1"
description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
category = "dev"
optional = false
python-versions = ">=3.7"

[package.extras]
docs = ["Sphinx (>=4)", "furo (>=2021.7.5b38)", "proselint (>=0.10.2)", "sphinx-autodoc-typehints (>=1.12)"]
test = ["appdirs (==1.4.4)", "pytest (>=6)", "pytest-cov (>=2.7)", "pytest-mock (>=3.6)"]

[[package]]
name = "pre-commit"
version = "2.17.0"
description = "A framework for managing and maintaining multi-language pre-commit hooks."
category = "dev"
optional = false
python-versions = ">=3.6.1"

[package.dependencies]
cfgv = ">=2.0.0"
identify = ">=1.0.0"
nodeenv = ">=0.11.1"
pyyaml = ">=5.1"
toml = "*"
virtualenv = ">=20.0.8"

[[package]]
name = "pycodestyle"
version = "2.8.0"
description = "Python style guide checker"
category = "dev"
optional = false
python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"

[[package]]
name = "pyflakes"
version = "2.4.0"
description = "passive checker of Python programs"
category = "dev"
optional = false
python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"

[[package]]
name = "python-dateutil"
version = "2.8.2"
description = "Extensions to the standard Python datetime module"
category = "dev"
optional = false
python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,>=2.7"

[package.dependencies]
six = ">=1.5"

[[package]]
name = "pyyaml"
version = "6.0"
description = "YAML parser and emitter for Python"
category = "dev"
optional = false
python-versions = ">=3.6"

[[package]]
name = "sh"
version = "1.14.2"
description = "Python subprocess replacement"
category = "dev"
optional = false
python-versions = "*"

[[package]]
name = "six"
version = "1.16.0"
description = "Python 2 and 3 compatibility utilities"
category = "dev"
optional = false
python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"

[[package]]
name = "smmap"
version = "5.0.0"
description = "A pure Python implementation of a sliding window memory map manager"
category = "dev"
optional = false
python-versions = ">=3.6"

[[package]]
name = "stevedore"
version = "3.5.0"
description = "Manage dynamic plugins for Python applications"
category = "dev"
optional = false
python-versions = ">=3.6"

[package.dependencies]
pbr = ">=2.0.0,<2.1.0 || >2.1.0"

[[package]]
name = "toml"
version = "0.10.2"
description = "Python Library for Tom's Obvious, Minimal Language"
category = "dev"
optional = false
python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"

[[package]]
name = "tomli"
version = "2.0.1"
description = "A lil' TOML parser"
category = "dev"
optional = false
python-versions = ">=3.7"

[[package]]
name = "typing-extensions"
version = "4.1.1"
description = "Backported and Experimental Type Hints for Python 3.6+"
category = "dev"
optional = false
python-versions = ">=3.6"

[[package]]
name = "virtualenv"
version = "20.13.2"
description = "Virtual Python Environment builder"
category = "dev"
optional = false
python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"

[package.dependencies]
distlib = ">=0.3.1,<1"
filelock = ">=3.2,<4"
platformdirs = ">=2,<3"
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 (>=21.3)"]
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)"]

[metadata]
lock-version = "1.1"
python-versions = "^3.10"
content-hash = "daacfbb981aeed3a10d8221b0012b03fd2d6e2c4011f64999c29a2cda01e9c8d"

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[takeda]

The patch necessary to compile mypy, is in hanging state, and mypy source code drifted away from it.

You can create an override to disable compiling:

      overrides = self: super: {
        mypy = super.mypy.overridePythonAttrs (old: {
          patches = [];
          MYPY_USE_MYPYC = false;
       });
      };

This mypy will work, although will be several times slower than one you would get from PyPI, because it is in pure python.

[fabianhjr]

Hi @takeda / @jmgilman, rebased the patch and solved the conflict on nixpkgs. Should be resolved downstream: NixOS/nixpkgs#165019

[nixos-discourse]

This issue has been mentioned on NixOS Discourse. There might be relevant details there:

https://discourse.nixos.org/t/mach-nix-pip2nix-poetry2nix-or-pynixify-for-zulip-provision/18836/21

[rht]

I just updated my NixOS unstable's Nixpkgs earlier this week, and still observed this problem on both Mypy 0.940 and 0.942. See the Discourse link above.

[rht]

Ah, my bad! I'm supposed to be using the latest master of poetry2nix, not Nixpkgs unstable. I was probably assuming that poetry2nix automatically extracts patches applied to Python packages in Nixpkgs.