[KeyError]: 'sections'

[yajo]

• I have searched the issue tracker and believe that this is not a duplicate.

Make sure you run commands with -v flag before pasting the output.

Steps to reproduce

pdm install -v in checkout of this commit: copier-org/copier@5ffe2d0

Actual behavior

Traceback (most recent call last):
  File "/var/home/yajo/.local/bin/pdm", line 8, in <module>
    sys.exit(main())
  File "/var/home/yajo/.local/pipx/venvs/pdm/lib64/python3.9/site-packages/pdm/core.py", line 73, in __call__
    return self.main(*args, **kwargs)
  File "/var/home/yajo/.local/pipx/venvs/pdm/lib64/python3.9/site-packages/pdm/core.py", line 112, in main
    raise err.with_traceback(traceback)
  File "/var/home/yajo/.local/pipx/venvs/pdm/lib64/python3.9/site-packages/pdm/core.py", line 108, in main
    f(options.project, options)
  File "/var/home/yajo/.local/pipx/venvs/pdm/lib64/python3.9/site-packages/pdm/cli/commands/install.py", line 39, in handle
    actions.do_sync(
  File "/var/home/yajo/.local/pipx/venvs/pdm/lib64/python3.9/site-packages/pdm/cli/actions.py", line 123, in do_sync
    candidates.update(project.get_locked_candidates())
  File "/var/home/yajo/.local/pipx/venvs/pdm/lib64/python3.9/site-packages/pdm/project/core.py", line 315, in get_locked_candidates
    if section != "__all__" and section not in package["sections"]:
KeyError: 'sections'

Expected behavior

No failure.

Environment Information

# Paste the output of `pdm info && pdm info --env` below:
PDM version:        1.3.1                        
Python Interpreter: /usr/bin/python (3.9.1)      
Project Root:       /var/home/yajo/mydevel/copier
{
  "implementation_name": "cpython",
  "implementation_version": "3.9.1",
  "os_name": "posix",
  "platform_machine": "x86_64",
  "platform_release": "5.10.12-200.fc33.x86_64",
  "platform_system": "Linux",
  "platform_version": "#1 SMP Mon Feb 1 02:40:52 UTC 2021",
  "python_full_version": "3.9.1",
  "platform_python_implementaiton": "CPython",
  "python_version": "3.9",
  "sys_platform": "linux"
}

[frostming]

try generating the lock file again?

[yajo]

Actually it happens while generating it (1st time pdm install ever). I ran it with -v:

➤ pdm install -v
Lock file does not exist, trying to generate one...
======== Start resolving requirements ========
        backports.cached-property<2.0.0,>=1.0.0; python_version < "3.8"
        colorama<1.0.0,>=0.4.3
        iteration-utilities<1.0.0,>=0.10.1
        jinja2<3.0.0,>=2.11.2
        packaging<21.0,>=20.4
        pathspec<1.0.0,>=0.8.0
        plumbum<2.0.0,>=1.6.9
        pydantic<2.0.0,>=1.7.2
        Pygments<3.0.0,>=2.7.1
        pyyaml<6.0.0,>=5.3.1
        pyyaml-include<2.0,>=1.2
        questionary<2.0.0,>=1.8.1
        typing-extensions<4.0.0,>=3.7.4; python_version < "3.8"
        autoflake<2.0,>=1.4
        black<21.0,>=20.8b1
        flake8<4.0.0,>=3.8.4
        flake8-bugbear<21.0.0,>=20.1.4
        flake8-comprehensions<4.0.0,>=3.2.3
        flake8-debugger<4.0.0,>=3.2.1
        mypy<1.0,>=0.790
        pexpect<5.0.0,>=4.8.0
        pre-commit<3.0.0,>=2.7.1
        pytest<7.0.0,>=6.1.1
        pytest-cov<3.0.0,>=2.10.1
        pytest-xdist<3.0.0,>=2.1.0
        mkdocs-material<6.0.0,>=5.5.2
        mkdocs-mermaid2-plugin<1.0.0,>=0.5.0
        git+https://github.com/pawamoy/mkdocstrings.git@master#egg=mkdocstrings
        git+https://github.com/pawamoy/pytkdocs.git@master#egg=pytkdocs
        Adding requirement backports.cached-property<2.0.0,>=1.0.0; python_version < "3.8"
        Adding requirement colorama<1.0.0,>=0.4.3
        Adding requirement iteration-utilities<1.0.0,>=0.10.1
        Adding requirement jinja2<3.0.0,>=2.11.2
        Adding requirement packaging<21.0,>=20.4
        Adding requirement pathspec<1.0.0,>=0.8.0
        Adding requirement plumbum<2.0.0,>=1.6.9
        Adding requirement pydantic<2.0.0,>=1.7.2
        Adding requirement Pygments<3.0.0,>=2.7.1
        Adding requirement pyyaml<6.0.0,>=5.3.1
        Adding requirement pyyaml-include<2.0,>=1.2
        Adding requirement questionary<2.0.0,>=1.8.1
        Adding requirement typing-extensions<4.0.0,>=3.7.4; python_version < "3.8"
        Adding requirement autoflake<2.0,>=1.4
        Adding requirement black<21.0,>=20.8b1
        Adding requirement flake8<4.0.0,>=3.8.4
        Adding requirement flake8-bugbear<21.0.0,>=20.1.4
        Adding requirement flake8-comprehensions<4.0.0,>=3.2.3
        Adding requirement flake8-debugger<4.0.0,>=3.2.1
        Adding requirement mypy<1.0,>=0.790
        Adding requirement pexpect<5.0.0,>=4.8.0
        Adding requirement pre-commit<3.0.0,>=2.7.1
        Adding requirement pytest<7.0.0,>=6.1.1
        Adding requirement pytest-cov<3.0.0,>=2.10.1
        Adding requirement pytest-xdist<3.0.0,>=2.1.0
        Adding requirement mkdocs-material<6.0.0,>=5.5.2
        Adding requirement mkdocs-mermaid2-plugin<1.0.0,>=0.5.0
        Adding requirement git+https://github.com/pawamoy/mkdocstrings.git@master#egg=mkdocstrings
Preparing isolated env for PEP 517 build...
Collecting poetry-core
  Using cached poetry_core-1.0.2-py2.py3-none-any.whl (424 kB)
Installing collected packages: poetry-core
Successfully installed poetry-core-1.0.2
        Adding requirement git+https://github.com/pawamoy/pytkdocs.git@master#egg=pytkdocs
Preparing isolated env for PEP 517 build...
Collecting poetry-core
  Using cached poetry_core-1.0.2-py2.py3-none-any.whl (424 kB)
Installing collected packages: poetry-core
Successfully installed poetry-core-1.0.2
        Adding requirement pyflakes>=1.1.0(from autoflake 1.4)
Resolving: autoflake 1.4
        New pin: autoflake 1.4
======== Ending round 0 ========
        Adding requirement click>=7.1.2(from black 20.8b1)
        Adding requirement appdirs(from black 20.8b1)
        Adding requirement toml>=0.10.1(from black 20.8b1)
        Adding requirement typed-ast>=1.4.0(from black 20.8b1)
        Adding requirement regex>=2020.1.8(from black 20.8b1)
        Adding requirement pathspec<1,>=0.6(from black 20.8b1)
        Adding requirement typing-extensions>=3.7.4(from black 20.8b1)
        Adding requirement mypy-extensions>=0.4.3(from black 20.8b1)
        Adding requirement dataclasses>=0.6; python_version < "3.7"(from black 20.8b1)
Resolving: black 20.8b1
        New pin: black 20.8b1
======== Ending round 1 ========
        Adding requirement flake8>=1.5(from flake8-debugger 3.2.1)
        Adding requirement pycodestyle(from flake8-debugger 3.2.1)
Resolving: flake8-debugger 3.2.1
        New pin: flake8-debugger 3.2.1
======== Ending round 2 ========
        Adding requirement Jinja2<3.0,>=2.11(from mkdocstrings 0.14.0)
        Adding requirement Markdown<4.0,>=3.3(from mkdocstrings 0.14.0)
        Adding requirement MarkupSafe<2.0,>=1.1(from mkdocstrings 0.14.0)
        Adding requirement mkdocs<2.0,>=1.1(from mkdocstrings 0.14.0)
        Adding requirement pymdown-extensions<9.0,>=6.3(from mkdocstrings 0.14.0)
        Adding requirement pytkdocs<0.11.0,>=0.2.0(from mkdocstrings 0.14.0)
Preparing isolated env for PEP 517 build...
Collecting poetry-core
  Using cached poetry_core-1.0.2-py2.py3-none-any.whl (424 kB)
Installing collected packages: poetry-core
Successfully installed poetry-core-1.0.2
Resolving: mkdocstrings 0.14.0
        New pin: mkdocstrings 0.14.0
======== Ending round 3 ========
        Adding requirement cached-property<2.0.0,>=1.5.2; python_version < "3.8"(from pytkdocs 0.10.1)
        Adding requirement dataclasses<0.9,>=0.7; python_version == "3.6"(from pytkdocs 0.10.1)
        Adding requirement typing-extensions<4.0.0.0,>=3.7.4.3; python_version < "3.8"(from pytkdocs 0.10.1)
Resolving: pytkdocs 0.10.1
        New pin: pytkdocs 0.10.1
======== Ending round 4 ========
        Adding requirement pyflakes<2.3.0,>=2.2.0(from flake8 3.8.4)
        Adding requirement pycodestyle<2.7.0,>=2.6.0a1(from flake8 3.8.4)
        Adding requirement mccabe<0.7.0,>=0.6.0(from flake8 3.8.4)
        Adding requirement importlib-metadata; python_version < "3.8"(from flake8 3.8.4)
Resolving: flake8 3.8.4
        New pin: flake8 3.8.4
======== Ending round 5 ========
        Adding requirement ptyprocess>=0.5(from pexpect 4.8.0)
Resolving: pexpect 4.8.0
        New pin: pexpect 4.8.0
======== Ending round 6 ========
Resolving: pyflakes 2.2.0
        New pin: pyflakes 2.2.0
======== Ending round 7 ========
Resolving: click 7.1.2
        New pin: click 7.1.2
======== Ending round 8 ========
Resolving: mypy-extensions 0.4.3
        New pin: mypy-extensions 0.4.3
======== Ending round 9 ========
Resolving: pycodestyle 2.6.0
        New pin: pycodestyle 2.6.0
======== Ending round 10 ========
Resolving: cached-property 1.5.2
        New pin: cached-property 1.5.2
======== Ending round 11 ========
Resolving: typing-extensions 3.7.4.3
        New pin: typing-extensions 3.7.4.3
======== Ending round 12 ========
Resolving: colorama 0.4.4
        New pin: colorama 0.4.4
======== Ending round 13 ========
        Adding requirement MarkupSafe>=0.23(from jinja2 2.11.3)
Resolving: jinja2 2.11.3
        New pin: jinja2 2.11.3
======== Ending round 14 ========
Resolving: pathspec 0.8.1
        New pin: pathspec 0.8.1
======== Ending round 15 ========
        Adding requirement pypiwin32; platform_system == "Windows" and platform_python_implementation != "PyPy"(from plumbum 1.7.0)
Resolving: plumbum 1.7.0
        New pin: plumbum 1.7.0
======== Ending round 16 ========
        Adding requirement prompt-toolkit<4.0,>=2.0(from questionary 1.9.0)
Resolving: questionary 1.9.0
        New pin: questionary 1.9.0
======== Ending round 17 ========
        Adding requirement flake8>=3.0.0(from flake8-bugbear 20.11.1)
        Adding requirement attrs>=19.2.0(from flake8-bugbear 20.11.1)
Resolving: flake8-bugbear 20.11.1
        New pin: flake8-bugbear 20.11.1
======== Ending round 18 ========
        Adding requirement setuptools>=18.5(from mkdocs-mermaid2-plugin 0.5.1)
        Adding requirement beautifulsoup4>=4.6.3(from mkdocs-mermaid2-plugin 0.5.1)
        Adding requirement mkdocs>=1.0.4(from mkdocs-mermaid2-plugin 0.5.1)
        Adding requirement jsbeautifier(from mkdocs-mermaid2-plugin 0.5.1)
        Adding requirement pyyaml(from mkdocs-mermaid2-plugin 0.5.1)
        Adding requirement mkdocs-material(from mkdocs-mermaid2-plugin 0.5.1)
        Adding requirement requests(from mkdocs-mermaid2-plugin 0.5.1)
        Adding requirement pymdown-extensions>=8.0(from mkdocs-mermaid2-plugin 0.5.1)
Resolving: mkdocs-mermaid2-plugin 0.5.1
        New pin: mkdocs-mermaid2-plugin 0.5.1
======== Ending round 19 ========
Resolving: toml 0.10.2
        New pin: toml 0.10.2
======== Ending round 20 ========
Resolving: dataclasses 0.8
        New pin: dataclasses 0.8
======== Ending round 21 ========
Resolving: mccabe 0.6.1
        New pin: mccabe 0.6.1
======== Ending round 22 ========
        Adding requirement PyYAML<6.0,>=5.3.1(from pyyaml-include 1.2.post2)
Resolving: pyyaml-include 1.2.post2
        New pin: pyyaml-include 1.2.post2
======== Ending round 23 ========
        Adding requirement flake8!=3.2.0,<4,>=3.0(from flake8-comprehensions 3.3.1)
        Adding requirement importlib-metadata; python_version < "3.8"(from flake8-comprehensions 3.3.1)
Resolving: flake8-comprehensions 3.3.1
        New pin: flake8-comprehensions 3.3.1
======== Ending round 24 ========
        Adding requirement pytest>=4.6(from pytest-cov 2.11.1)
        Adding requirement coverage>=5.2.1(from pytest-cov 2.11.1)
Resolving: pytest-cov 2.11.1
        New pin: pytest-cov 2.11.1
======== Ending round 25 ========
        Adding requirement execnet>=1.1(from pytest-xdist 2.2.1)
        Adding requirement pytest>=6.0.0(from pytest-xdist 2.2.1)
        Adding requirement pytest-forked(from pytest-xdist 2.2.1)
Resolving: pytest-xdist 2.2.1
        New pin: pytest-xdist 2.2.1
======== Ending round 26 ========
        Adding requirement click>=3.3(from mkdocs 1.1.2)
        Adding requirement Jinja2>=2.10.1(from mkdocs 1.1.2)
        Adding requirement livereload>=2.5.1(from mkdocs 1.1.2)
        Adding requirement lunr[languages]==0.5.8(from mkdocs 1.1.2)
        Adding requirement Markdown>=3.2.1(from mkdocs 1.1.2)
        Adding requirement PyYAML>=3.10(from mkdocs 1.1.2)
        Adding requirement tornado>=5.0(from mkdocs 1.1.2)
Resolving: mkdocs 1.1.2
        New pin: mkdocs 1.1.2
======== Ending round 27 ========
        Adding requirement future>=0.16.0(from lunr 0.5.8)
        Adding requirement six>=1.11.0(from lunr 0.5.8)
        Adding requirement nltk>=3.2.5; python_version > "2.7"(from lunr 0.5.8)
        Adding requirement lunr==0.5.8(from lunr 0.5.8)
Resolving: lunr 0.5.8
        New pin: lunr 0.5.8
======== Ending round 28 ========
        Adding requirement future>=0.16.0(from lunr 0.5.8)
        Adding requirement six>=1.11.0(from lunr 0.5.8)
Resolving: lunr 0.5.8
        New pin: lunr 0.5.8
======== Ending round 29 ========
        Adding requirement importlib-metadata; python_version < "3.8"(from Markdown 3.3.3)
Resolving: Markdown 3.3.3
        New pin: Markdown 3.3.3
======== Ending round 30 ========
        Adding requirement Markdown>=3.2(from pymdown-extensions 8.1.1)
Resolving: pymdown-extensions 8.1.1
        New pin: pymdown-extensions 8.1.1
======== Ending round 31 ========
Resolving: future 0.18.2
        New pin: future 0.18.2
======== Ending round 32 ========
Resolving: ptyprocess 0.7.0
        New pin: ptyprocess 0.7.0
======== Ending round 33 ========
        Adding requirement click(from nltk 3.5)
        Adding requirement joblib(from nltk 3.5)
        Adding requirement regex(from nltk 3.5)
        Adding requirement tqdm(from nltk 3.5)
Resolving: nltk 3.5
        New pin: nltk 3.5
======== Ending round 34 ========
        Adding requirement typing>=3.6; python_version < "3.7"(from backports.cached-property 1.0.1)
Resolving: backports.cached-property 1.0.1
        New pin: backports.cached-property 1.0.1
======== Ending round 35 ========
Resolving: Pygments 2.8.0
        New pin: Pygments 2.8.0
======== Ending round 36 ========
        Adding requirement attrs>=19.2.0(from pytest 6.2.2)
        Adding requirement iniconfig(from pytest 6.2.2)
        Adding requirement packaging(from pytest 6.2.2)
        Adding requirement pluggy<1.0.0a1,>=0.12(from pytest 6.2.2)
        Adding requirement py>=1.8.2(from pytest 6.2.2)
        Adding requirement toml(from pytest 6.2.2)
        Adding requirement importlib-metadata>=0.12; python_version < "3.8"(from pytest 6.2.2)
        Adding requirement atomicwrites>=1.0; sys_platform == "win32"(from pytest 6.2.2)
        Adding requirement colorama; sys_platform == "win32"(from pytest 6.2.2)
Resolving: pytest 6.2.2
        New pin: pytest 6.2.2
======== Ending round 37 ========
        Adding requirement importlib-metadata>=0.12; python_version < "3.8"(from pluggy 0.13.1)
Resolving: pluggy 0.13.1
        New pin: pluggy 0.13.1
======== Ending round 38 ========
Resolving: py 1.10.0
        New pin: py 1.10.0
======== Ending round 39 ========
Resolving: iniconfig 1.1.1
        New pin: iniconfig 1.1.1
======== Ending round 40 ========
Resolving: attrs 20.3.0
        New pin: attrs 20.3.0
======== Ending round 41 ========
        Adding requirement six(from livereload 2.6.3)
        Adding requirement tornado; python_version > "2.7"(from livereload 2.6.3)
Resolving: livereload 2.6.3
        New pin: livereload 2.6.3
======== Ending round 42 ========
Resolving: six 1.15.0
        New pin: six 1.15.0
======== Ending round 43 ========
        Adding requirement pyparsing>=2.0.2(from packaging 20.9)
Resolving: packaging 20.9
        New pin: packaging 20.9
======== Ending round 44 ========
Resolving: appdirs 1.4.4
        New pin: appdirs 1.4.4
======== Ending round 45 ========
Resolving: atomicwrites 1.4.0
        New pin: atomicwrites 1.4.0
======== Ending round 46 ========
        Adding requirement py(from pytest-forked 1.3.0)
        Adding requirement pytest>=3.10(from pytest-forked 1.3.0)
Resolving: pytest-forked 1.3.0
        New pin: pytest-forked 1.3.0
======== Ending round 47 ========
        Adding requirement pywin32>=223(from pypiwin32 223)
Resolving: pypiwin32 223
        New pin: pypiwin32 223
======== Ending round 48 ========
Resolving: typing 3.7.4.3
        New pin: typing 3.7.4.3
======== Ending round 49 ========
        Adding requirement cfgv>=2.0.0(from pre-commit 2.10.1)
        Adding requirement identify>=1.0.0(from pre-commit 2.10.1)
        Adding requirement nodeenv>=0.11.1(from pre-commit 2.10.1)
        Adding requirement pyyaml>=5.1(from pre-commit 2.10.1)
        Adding requirement toml(from pre-commit 2.10.1)
        Adding requirement virtualenv>=20.0.8(from pre-commit 2.10.1)
        Adding requirement importlib-resources; python_version < "3.7"(from pre-commit 2.10.1)
        Adding requirement importlib-metadata; python_version < "3.8"(from pre-commit 2.10.1)
Resolving: pre-commit 2.10.1
        New pin: pre-commit 2.10.1
======== Ending round 50 ========
Resolving: cfgv 3.2.0
        New pin: cfgv 3.2.0
======== Ending round 51 ========
        Adding requirement apipkg>=1.4(from execnet 1.8.0)
Resolving: execnet 1.8.0
        New pin: execnet 1.8.0
======== Ending round 52 ========
Resolving: apipkg 1.5
        New pin: apipkg 1.5
======== Ending round 53 ========
        Adding requirement mkdocs>=1.1(from mkdocs-material 5.5.14)
        Adding requirement Pygments>=2.4(from mkdocs-material 5.5.14)
        Adding requirement markdown>=3.2(from mkdocs-material 5.5.14)
        Adding requirement pymdown-extensions>=7.0(from mkdocs-material 5.5.14)
        Adding requirement mkdocs-material-extensions>=1.0(from mkdocs-material 5.5.14)
Resolving: mkdocs-material 5.5.14
        New pin: mkdocs-material 5.5.14
======== Ending round 54 ========
        Adding requirement mkdocs-material>=5.0.0(from mkdocs-material-extensions 1.0.1)
Resolving: mkdocs-material-extensions 1.0.1
        New pin: mkdocs-material-extensions 1.0.1
======== Ending round 55 ========
        Adding requirement soupsieve>1.2; python_version >= "3.0"(from beautifulsoup4 4.9.3)
Resolving: beautifulsoup4 4.9.3
        New pin: beautifulsoup4 4.9.3
======== Ending round 56 ========
Resolving: nodeenv 1.5.0
        New pin: nodeenv 1.5.0
======== Ending round 57 ========
        Adding requirement dataclasses>=0.6; python_version < "3.7"(from pydantic 1.7.3)
Resolving: pydantic 1.7.3
        New pin: pydantic 1.7.3
======== Ending round 58 ========
Resolving: soupsieve 2.2
        New pin: soupsieve 2.2
======== Ending round 59 ========
Resolving: iteration-utilities 0.11.0
        New pin: iteration-utilities 0.11.0
======== Ending round 60 ========
Resolving: pyyaml 5.4.1
        New pin: pyyaml 5.4.1
======== Ending round 61 ========
        Adding requirement zipp>=0.4; python_version < "3.8"(from importlib-resources 5.1.0)
Resolving: importlib-resources 5.1.0
        New pin: importlib-resources 5.1.0
======== Ending round 62 ========
Resolving: zipp 3.4.0
        New pin: zipp 3.4.0
======== Ending round 63 ========
        Adding requirement typed-ast<1.5.0,>=1.4.0(from mypy 0.812)
        Adding requirement typing-extensions>=3.7.4(from mypy 0.812)
        Adding requirement mypy-extensions<0.5.0,>=0.4.3(from mypy 0.812)
Resolving: mypy 0.812
        New pin: mypy 0.812
======== Ending round 64 ========
        Adding requirement six>=1.13.0(from jsbeautifier 1.13.5)
        Adding requirement editorconfig>=0.12.2(from jsbeautifier 1.13.5)
Resolving: jsbeautifier 1.13.5
        New pin: jsbeautifier 1.13.5
======== Ending round 65 ========
Resolving: editorconfig 0.12.3
        New pin: editorconfig 0.12.3
======== Ending round 66 ========
        Adding requirement wcwidth(from prompt-toolkit 3.0.16)
Resolving: prompt-toolkit 3.0.16
        New pin: prompt-toolkit 3.0.16
======== Ending round 67 ========
Resolving: wcwidth 0.2.5
        New pin: wcwidth 0.2.5
======== Ending round 68 ========
        Adding requirement zipp>=0.5(from importlib-metadata 3.6.0)
        Adding requirement typing-extensions>=3.6.4; python_version < "3.8"(from importlib-metadata 3.6.0)
Resolving: importlib-metadata 3.6.0
        New pin: importlib-metadata 3.6.0
======== Ending round 69 ========
Resolving: pywin32 300
        New pin: pywin32 300
======== Ending round 70 ========
        Adding requirement appdirs<2,>=1.4.3(from virtualenv 20.4.2)
        Adding requirement distlib<1,>=0.3.1(from virtualenv 20.4.2)
        Adding requirement filelock<4,>=3.0.0(from virtualenv 20.4.2)
        Adding requirement six<2,>=1.9.0(from virtualenv 20.4.2)
        Adding requirement importlib-resources>=1.0; python_version < "3.7"(from virtualenv 20.4.2)
        Adding requirement importlib-metadata>=0.12; python_version < "3.8"(from virtualenv 20.4.2)
Resolving: virtualenv 20.4.2
        New pin: virtualenv 20.4.2
======== Ending round 71 ========
Resolving: distlib 0.3.1
        New pin: distlib 0.3.1
======== Ending round 72 ========
Resolving: filelock 3.0.12
        New pin: filelock 3.0.12
======== Ending round 73 ========
Resolving: joblib 1.0.1
        New pin: joblib 1.0.1
======== Ending round 74 ========
Resolving: pyparsing 2.4.7
        New pin: pyparsing 2.4.7
======== Ending round 75 ========
Resolving: typed-ast 1.4.2
        New pin: typed-ast 1.4.2
======== Ending round 76 ========
Resolving: MarkupSafe 1.1.1
        New pin: MarkupSafe 1.1.1
======== Ending round 77 ========
Resolving: tornado 6.1
        New pin: tornado 6.1
======== Ending round 78 ========
Resolving: identify 1.5.14
        New pin: identify 1.5.14
======== Ending round 79 ========
Resolving: coverage 5.4
        New pin: coverage 5.4
======== Ending round 80 ========
        Adding requirement chardet<5,>=3.0.2(from requests 2.25.1)
        Adding requirement idna<3,>=2.5(from requests 2.25.1)
        Adding requirement urllib3<1.27,>=1.21.1(from requests 2.25.1)
        Adding requirement certifi>=2017.4.17(from requests 2.25.1)
Resolving: requests 2.25.1
        New pin: requests 2.25.1
======== Ending round 81 ========
Resolving: chardet 4.0.0
        New pin: chardet 4.0.0
======== Ending round 82 ========
Resolving: idna 2.10
        New pin: idna 2.10
======== Ending round 83 ========
Resolving: certifi 2020.12.5
        New pin: certifi 2020.12.5
======== Ending round 84 ========
Resolving: urllib3 1.26.3
        New pin: urllib3 1.26.3
======== Ending round 85 ========
Resolving: tqdm 4.57.0
        New pin: tqdm 4.57.0
======== Ending round 86 ========
Resolving: regex 2020.11.13
        New pin: regex 2020.11.13
======== Ending round 87 ========
Resolving: setuptools 53.0.0
        New pin: setuptools 53.0.0
======== Ending round 88 ========
Finish resolving
======== Resolution Result ========
Stable pins:
                   autoflake 1.4
                       black 20.8b1
             flake8-debugger 3.2.1
                mkdocstrings 0.14.0
                    pytkdocs 0.10.1
                      flake8 3.8.4
                     pexpect 4.8.0
                    pyflakes 2.2.0
                       click 7.1.2
             mypy-extensions 0.4.3
                 pycodestyle 2.6.0
             cached-property 1.5.2
           typing-extensions 3.7.4.3
                    colorama 0.4.4
                      jinja2 2.11.3
                    pathspec 0.8.1
                     plumbum 1.7.0
                 questionary 1.9.0
              flake8-bugbear 20.11.1
      mkdocs-mermaid2-plugin 0.5.1
                        toml 0.10.2
                 dataclasses 0.8
                      mccabe 0.6.1
              pyyaml-include 1.2.post2
       flake8-comprehensions 3.3.1
                  pytest-cov 2.11.1
                pytest-xdist 2.2.1
                      mkdocs 1.1.2
             lunr[languages] 0.5.8
                        lunr 0.5.8
                    markdown 3.3.3
          pymdown-extensions 8.1.1
                      future 0.18.2
                  ptyprocess 0.7.0
                        nltk 3.5
   backports.cached-property 1.0.1
                    pygments 2.8.0
                      pytest 6.2.2
                      pluggy 0.13.1
                          py 1.10.0
                   iniconfig 1.1.1
                       attrs 20.3.0
                  livereload 2.6.3
                         six 1.15.0
                   packaging 20.9
                     appdirs 1.4.4
                atomicwrites 1.4.0
               pytest-forked 1.3.0
                   pypiwin32 223
                      typing 3.7.4.3
                  pre-commit 2.10.1
                        cfgv 3.2.0
                     execnet 1.8.0
                      apipkg 1.5
             mkdocs-material 5.5.14
  mkdocs-material-extensions 1.0.1
              beautifulsoup4 4.9.3
                     nodeenv 1.5.0
                    pydantic 1.7.3
                   soupsieve 2.2
         iteration-utilities 0.11.0
                      pyyaml 5.4.1
         importlib-resources 5.1.0
                        zipp 3.4.0
                        mypy 0.812
                jsbeautifier 1.13.5
                editorconfig 0.12.3
              prompt-toolkit 3.0.16
                     wcwidth 0.2.5
          importlib-metadata 3.6.0
                     pywin32 300
                  virtualenv 20.4.2
                     distlib 0.3.1
                    filelock 3.0.12
                      joblib 1.0.1
                   pyparsing 2.4.7
                   typed-ast 1.4.2
                  markupsafe 1.1.1
                     tornado 6.1
                    identify 1.5.14
                    coverage 5.4
                    requests 2.25.1
                     chardet 4.0.0
                        idna 2.10
                     certifi 2020.12.5
                     urllib3 1.26.3
                        tqdm 4.57.0
                       regex 2020.11.13
                  setuptools 53.0.0
Extracting package metadata
🔒 Lock successful
Changes are written to pdm.lock.
Traceback (most recent call last):
  File "/var/home/yajo/.local/bin/pdm", line 8, in <module>
    sys.exit(main())
  File "/var/home/yajo/.local/pipx/venvs/pdm/lib64/python3.9/site-packages/pdm/core.py", line 73, in __call__
    return self.main(*args, **kwargs)
  File "/var/home/yajo/.local/pipx/venvs/pdm/lib64/python3.9/site-packages/pdm/core.py", line 112, in main
    raise err.with_traceback(traceback)
  File "/var/home/yajo/.local/pipx/venvs/pdm/lib64/python3.9/site-packages/pdm/core.py", line 108, in main
    f(options.project, options)
  File "/var/home/yajo/.local/pipx/venvs/pdm/lib64/python3.9/site-packages/pdm/cli/commands/install.py", line 39, in handle
    actions.do_sync(
  File "/var/home/yajo/.local/pipx/venvs/pdm/lib64/python3.9/site-packages/pdm/cli/actions.py", line 123, in do_sync
    candidates.update(project.get_locked_candidates())
  File "/var/home/yajo/.local/pipx/venvs/pdm/lib64/python3.9/site-packages/pdm/project/core.py", line 315, in get_locked_candidates
    if section != "__all__" and section not in package["sections"]:
KeyError: 'sections'

[frostming]

It is caused by some circular dependencies in the docs section. You can temporarily workaround it by pdm lock in the current project directory and then you can install successfully

[yajo]

That unlocked my problem. I also stopped installing some deps from git because of the dependency conflict they introduce (affects poetry too, see copier-org/copier#362). Thank you!

Maybe the error message could be more helpful here.