Beeware 'briefcase create' asks for cairo >= 1.15.10 - python

I'm following Beeware tutorial and unable to 'briefcase create'.
At some point it shows this:
Collecting pygobject>=3.14.0
Downloading PyGObject-3.38.0.tar.gz (712 kB)
|████████████████████████████████| 712 kB 6.9 MB/s
Installing build dependencies ... error
ERROR: Command errored out with exit status 1:
command: /usr/bin/python3.8 /usr/local/lib/python3.8/dist-packages/pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-6esqaemw/overlay --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- setuptools wheel pycairo
cwd: None
Complete output (36 lines):
WARNING: The directory '/home/brutus/.cache/pip' or its parent directory is not owned or is not writable by the current user. The cache has been disabled. Check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting setuptools
Downloading setuptools-50.3.2-py3-none-any.whl (785 kB)
Collecting wheel
Downloading wheel-0.35.1-py2.py3-none-any.whl (33 kB)
Collecting pycairo
Downloading pycairo-1.20.0.tar.gz (344 kB)
Installing build dependencies: started
Installing build dependencies: finished with status 'done'
Getting requirements to build wheel: started
Getting requirements to build wheel: finished with status 'done'
Preparing wheel metadata: started
Preparing wheel metadata: finished with status 'done'
Building wheels for collected packages: pycairo
Building wheel for pycairo (PEP 517): started
Building wheel for pycairo (PEP 517): finished with status 'error'
ERROR: Command errored out with exit status 1:
command: /usr/bin/python3.8 /usr/local/lib/python3.8/dist-packages/pip/_vendor/pep517/_in_process.py build_wheel /tmp/tmp426eh9du
cwd: /tmp/pip-install-rmj9v5en/pycairo
Complete output (12 lines):
running bdist_wheel
running build
running build_py
creating build
creating build/lib.linux-x86_64-3.8
creating build/lib.linux-x86_64-3.8/cairo
copying cairo/__init__.py -> build/lib.linux-x86_64-3.8/cairo
copying cairo/__init__.pyi -> build/lib.linux-x86_64-3.8/cairo
copying cairo/py.typed -> build/lib.linux-x86_64-3.8/cairo
running build_ext
Requested 'cairo >= 1.15.10' but version of cairo is 1.14.6
Command '['pkg-config', '--print-errors', '--exists', 'cairo >= 1.15.10']' returned non-zero exit status 1.
----------------------------------------
ERROR: Failed building wheel for pycairo
Failed to build pycairo
ERROR: Could not build wheels for pycairo which use PEP 517 and cannot be installed directly
----------------------------------------
ERROR: Command errored out with exit status 1: /usr/bin/python3.8 /usr/local/lib/python3.8/dist-packages/pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-6esqaemw/overlay --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- setuptools wheel pycairo Check the logs for full command output.
Unable to install dependencies. This may be because one of your dependencies is invalid, or because pip was unable to connect to the PyPI server.
I believe the main problem is
Requested 'cairo >= 1.15.10' but version of cairo is 1.14.6
But what I don't understand is were is cairo 1.14.6 if I have only cairo 1.20.0 installed.
I tried to update docker, reinstall cairo and pycairo, updated python packages but the error is still there.

The beeware build process is trying to install the pycairo package. This package is just a python interface to the cairo graphics library (libcairo2).
pycairo changelog shows, newest version 1.20.0 for pycairo, which requires cairo (libcairo2) version 1.15.10+.
If you are lucky, you can simply update your cairo package to a version which satisfies the requirement. Info is on the official site cairographics.org/download/.
I have the same problem as you. In my case I am again reminded to upgrade my OS to newer version of Ubuntu, since the cairo package libcairo2 is only available in version 14.6 in Ubuntu 16.04 LTS official PPA. In Ubuntu 20.04 LTS the available libcairo2 is 16.0. I suspect you have a simmilar OS, because your installed cairo version is the same as mine.

You can build the package from source to bypass the error:

Related

Error in pip install transformers: Building wheel for tokenizers (pyproject.toml): finished with status 'error'

I'm building a docker image on cloud server via the following docker file:
# base image
FROM python:3
# add python file to working directory
ADD ./ /
# install and cache dependencies
RUN pip install --upgrade pip
RUN pip install RUST
RUN pip install transformers
RUN pip install torch
RUN pip install slack_sdk
RUN pip install slack_bolt
RUN pip install pandas
RUN pip install gensim
RUN pip install nltk
RUN pip install psycopg2
RUN pip install openpyxl
......
When installing the transformers package, the following error occurs:
STEP 5: RUN pip install transformers
Collecting transformers
Downloading transformers-4.15.0-py3-none-any.whl (3.4 MB)
Collecting filelock
......
Downloading click-8.0.3-py3-none-any.whl (97 kB)
Building wheels for collected packages: tokenizers
Building wheel for tokenizers (pyproject.toml): started
ERROR: Command errored out with exit status 1:
command: /usr/local/bin/python /usr/local/lib/python3.10/site-packages/pip/_vendor/pep517/in_process/_in_process.py build_wheel /tmp/tmp_3y7hw5q
cwd: /tmp/pip-install-bsy5f4da/tokenizers_e09b9f903acd40f0af4a997fe1d8fdb4
Complete output (50 lines):
running bdist_wheel
......
copying py_src/tokenizers/trainers/__init__.pyi -> build/lib.linux-x86_64-3.10/tokenizers/trainers
copying py_src/tokenizers/tools/visualizer-styles.css -> build/lib.linux-x86_64-3.10/tokenizers/tools
running build_ext
error: can't find Rust compiler
If you are using an outdated pip version, it is possible a prebuilt wheel is available for this package but pip is not able to install from it. Installing from the wheel would avoid the need for a Rust compiler.
To update pip, run:
pip install --upgrade pip
and then retry package installation.
If you did intend to build this package from source, try installing a Rust compiler from your system package manager and ensure it is on the PATH during installation. Alternatively, rustup (available at https://rustup.rs) is the recommended way to download and update the Rust compiler toolchain.
----------------------------------------
ERROR: Failed building wheel for tokenizers
ERROR: Could not build wheels for tokenizers, which is required to install pyproject.toml-based projects
Building wheel for tokenizers (pyproject.toml): finished with status 'error'
Failed to build tokenizers
subprocess exited with status 1
subprocess exited with status 1
error building at STEP "RUN pip install transformers": exit status 1
time="2022-01-18T07:24:56Z" level=error msg="exit status 1"
Dockerfile build failed - exit status 1exit status 1
I'm not very sure about what's happening here. Can anyone help me? Thanks in advance.
The logs say
error: can't find Rust compiler
You need to install a rust compiler. See https://www.rust-lang.org/tools/install. You can modify the installation instructions for a docker image like this (from https://stackoverflow.com/a/58169817/5666087):
RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
ENV PATH="/root/.cargo/bin:${PATH}"
Just use a clean python=3.8 environment and try again.

pip cannot find build dependencies

I am trying to install some python libraries using
pip install -r requirements
The file looks like:
spacy>=2.1.0,<2.2.0
matplotlib
pandas
networkx
flask
inflect
It was initially giving errors for C++ build tools, but after installing those using the visual studio installer I get the following error.
Collecting spacy<2.2.0,>=2.1.0
Using cached spacy-2.1.9.tar.gz (30.7 MB)
Installing build dependencies ... error
ERROR: Command errored out with exit status 1:
command: 'C:\Users\haris\AppData\Local\Programs\Python\Python38\python.exe'
'C:\Users\haris\AppData\Local\Temp\pip-standalone-pip-iges9uxt\__env_pip__.zip\pip' install --ignore-installed --no-user --prefix
'C:\Users\haris\AppData\Local\Temp\pip-build-env-49g1awc5\overlay' --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- setuptools 'wheel>0.32.0,<0.33.0' Cython 'cymem>=2.0.2,<2.1.0' 'preshed>=2.0.1,<2.1.0' 'murmurhash>=0.28.0,<1.1.0' 'thinc>=7.0.8,<7.1.0'
cwd: None
ERROR: Failed building wheel for blis
Running setup.py clean for blis
Successfully built preshed
Failed to build blis
Do I need to reinstall a newer version of python?

PIP failed to build package cytoolz

I'm trying to install eth-brownie using 'pipx install eth-brownie' but I get an error saying
pip failed to build package: cytoolz
Some possibly relevant errors from pip install:
build\lib.win-amd64-3.10\cytoolz\functoolz.cp310-win_amd64.pyd : fatal error LNK1120: 1 unresolved externals
error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\BuildTools\\VC\\Tools\\MSVC\\14.29.30133\\bin\\HostX86\\x64\\link.exe' failed with exit code 1120
I've had a look at the log file and it shows that it failed to build cytoolz. It also mentions "ALERT: Cython not installed. Building without Cython.". From my limited understanding Cytoolz is apart of Cython so i think the reason why the installation for eth-brownie failed is because it could not build cytoolz as it was trying to build it without Cython. The thing is I already have cython installed:
C:\Users\alaiy>pip install cython
Requirement already satisfied: cython in c:\python310\lib\site-packages (0.29.24)
Extract from the log file (I can paste the whole thing but its lengthy):
Building wheels for collected packages: bitarray, cytoolz, lru-dict, parsimonious, psutil, pygments-lexer-solidity, varint, websockets, wrapt
Building wheel for bitarray (setup.py): started
Building wheel for bitarray (setup.py): finished with status 'done'
Created wheel for bitarray: filename=bitarray-1.2.2-cp310-cp310-win_amd64.whl size=55783 sha256=d4ae97234d659ed9ff1f0c0201e82c7e321bd3f4e122f6c2caee225172e7bfb2
Stored in directory: c:\users\alaiy\appdata\local\pip\cache\wheels\1d\29\a8\5364620332cc833df35535f54074cf1e51f94d07d2a660bd6d
Building wheel for cytoolz (setup.py): started
Building wheel for cytoolz (setup.py): finished with status 'error'
Running setup.py clean for cytoolz
Building wheel for lru-dict (setup.py): started
Building wheel for lru-dict (setup.py): finished with status 'done'
Created wheel for lru-dict: filename=lru_dict-1.1.7-cp310-cp310-win_amd64.whl size=12674 sha256=6a7e7b2068eb8481650e0a2ae64c94223b3d2c018f163c5a0e7c1d442077450a
Stored in directory: c:\users\alaiy\appdata\local\pip\cache\wheels\47\0a\dc\b156cb52954bbc1c31b4766ca3f0ed9eae9b218812bca89d7b
Building wheel for parsimonious (setup.py): started
Building wheel for parsimonious (setup.py): finished with status 'done'
Created wheel for parsimonious: filename=parsimonious-0.8.1-py3-none-any.whl size=42724 sha256=f9235a9614af0f5204d6bb35b8bd30b9456eae3021b5c2a9904345ad7d07a49d
Stored in directory: c:\users\alaiy\appdata\local\pip\cache\wheels\b1\12\f1\7a2f39b30d6780ae9f2be9a52056595e0d97c1b4531d183085
Building wheel for psutil (setup.py): started
Building wheel for psutil (setup.py): finished with status 'done'
Created wheel for psutil: filename=psutil-5.8.0-cp310-cp310-win_amd64.whl size=246135 sha256=834ab1fd1dd0c18e574fc0fbf07922e605169ac68be70b8a64fb90c49ad4ae9b
Stored in directory: c:\users\alaiy\appdata\local\pip\cache\wheels\12\a3\6d\615295409067d58a62a069d30d296d61d3ac132605e3a9555c
Building wheel for pygments-lexer-solidity (setup.py): started
Building wheel for pygments-lexer-solidity (setup.py): finished with status 'done'
Created wheel for pygments-lexer-solidity: filename=pygments_lexer_solidity-0.7.0-py3-none-any.whl size=7321 sha256=46355292f790d07d941a745cd58b64c5592e4c24357f7cc80fe200c39ab88d32
Stored in directory: c:\users\alaiy\appdata\local\pip\cache\wheels\36\fd\bc\6ff4fe156d46016eca64c9652a1cd7af6411070c88acbeabf5
Building wheel for varint (setup.py): started
Building wheel for varint (setup.py): finished with status 'done'
Created wheel for varint: filename=varint-1.0.2-py3-none-any.whl size=1979 sha256=36b744b26ba7534a494757e16ab6e171d9bb60a4fe4663557d57034f1150b678
Stored in directory: c:\users\alaiy\appdata\local\pip\cache\wheels\39\48\5e\33919c52a2a695a512ca394a5308dd12626a40bbcd288de814
Building wheel for websockets (setup.py): started
Building wheel for websockets (setup.py): finished with status 'done'
Created wheel for websockets: filename=websockets-9.1-cp310-cp310-win_amd64.whl size=91765 sha256=a00a9c801269ea2b86d72c0b0b654dc67672519721afeac8f912a157e52901c0
Stored in directory: c:\users\alaiy\appdata\local\pip\cache\wheels\79\f7\4e\873eca27ecd6d7230caff265283a5a5112ad4cd1d945c022dd
Building wheel for wrapt (setup.py): started
Building wheel for wrapt (setup.py): finished with status 'done'
Created wheel for wrapt: filename=wrapt-1.12.1-cp310-cp310-win_amd64.whl size=33740 sha256=ccd729b6e3915164ac4994aef731f21cd232466b3f6c4823c9fda14b07e821c3
Stored in directory: c:\users\alaiy\appdata\local\pip\cache\wheels\8e\61\d3\d9e7053100177668fa43216a8082868c55015f8706abd974f2
Successfully built bitarray lru-dict parsimonious psutil pygments-lexer-solidity varint websockets wrapt
Failed to build cytoolz
Installing collected packages: toolz, eth-typing, eth-hash, cytoolz, six, pyparsing, eth-utils, varint, urllib3, toml, rlp, pyrsistent, pycryptodome, py, pluggy, parsimonious, packaging, netaddr, multidict, iniconfig, idna, hexbytes, eth-keys, colorama, charset-normalizer, certifi, base58, attrs, atomicwrites, yarl, typing-extensions, requests, python-dateutil, pytest, multiaddr, jsonschema, inflection, eth-rlp, eth-keyfile, eth-abi, chardet, bitarray, async-timeout, websockets, wcwidth, tomli, sortedcontainers, semantic-version, regex, pywin32, pytest-forked, pyjwt, pygments, protobuf, platformdirs, pathspec, mythx-models, mypy-extensions, lru-dict, ipfshttpclient, execnet, eth-account, dataclassy, click, asttokens, aiohttp, wrapt, web3, vyper, vvm, tqdm, pyyaml, pythx, python-dotenv, pytest-xdist, pygments-lexer-solidity, py-solc-x, py-solc-ast, psutil, prompt-toolkit, lazy-object-proxy, hypothesis, eth-event, eip712, black, eth-brownie
Running setup.py install for cytoolz: started
Running setup.py install for cytoolz: finished with status 'error'
PIP STDERR
----------
WARNING: The candidate selected for download or install is a yanked version: 'protobuf' candidate (version 3.18.0 at https://files.pythonhosted.org/packages/74/4e/9f3cb458266ef5cdeaa1e72a90b9eda100e3d1803cbd7ec02f0846da83c3/protobuf-3.18.0-py2.py3-none-any.whl#sha256=615099e52e9fbc9fde00177267a94ca820ecf4e80093e390753568b7d8cb3c1a (from https://pypi.org/simple/protobuf/))
Reason for being yanked: This version claims to support Python 2 but does not
ERROR: Command errored out with exit status 1:
command: 'C:\Users\alaiy\.local\pipx\venvs\eth-brownie\Scripts\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\alaiy\\AppData\\Local\\Temp\\pip-install-d1bskwa2\\cytoolz_f765f335272241adba2138f1920a35cd\\setup.py'"'"'; __file__='"'"'C:\\Users\\alaiy\\AppData\\Local\\Temp\\pip-install-d1bskwa2\\cytoolz_f765f335272241adba2138f1920a35cd\\setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d 'C:\Users\alaiy\AppData\Local\Temp\pip-wheel-pxzumeav'
cwd: C:\Users\alaiy\AppData\Local\Temp\pip-install-d1bskwa2\cytoolz_f765f335272241adba2138f1920a35cd\
Complete output (70 lines):
ALERT: Cython not installed. Building without Cython.
running bdist_wheel
running build
running build_py
creating build
creating build\lib.win-amd64-3.10
creating build\lib.win-amd64-3.10\cytoolz
copying cytoolz\compatibility.py -> build\lib.win-amd64-3.10\cytoolz
copying cytoolz\utils_test.py -> build\lib.win-amd64-3.10\cytoolz
Managed to get it working with python 3.10.1 on Win10 x64 installing cython and cytoolz first:
python -m pip install --user cython
python -m pip install --user cytoolz
python -m pip install --user eth-brownie
https://github.com/eth-brownie/brownie/issues/1315
I was having the same issue and did this...
python -m pip install --user cython
python -m pip install --user cytoolz
python -m pip install --user eth-brownie
python -m pip install --user pipx
python -m pipx ensurepath
# RESTARTED TERMINAL
pipx install eth-brownie
I was good to go then and could type in "brownie" in the terminal without getting an error. Some of the documentation I was reading had python3 and removing the 3 seemed to work.
Migrating OP's solution from the question to an answer
Cython appears to not be supported on Python 3.10 (ref https://github.com/eth-brownie/brownie/issues/1300 and https://github.com/cython/cython/issues/4046). I downgraded to Python 3.9.7 and eth-brownie installation worked!)
I used:
pip install eth-brownie
It worked fine, and I didn't need to downgrade.
I'm new to this, so maybe I could be wrong, but it worked fine with me.

Multiple errors trying to install jq

%pip install jq
returns the following error
ERROR: Command errored out with exit status 1:
command: 'C:\Users\myacn\anaconda3\python.exe' 'C:\Users\myacn\anaconda3\lib\site-packages\pip\_vendor\pep517\_in_process.py' build_wheel 'C:\Users\myacn\AppData\Local\Temp\tmpygza7t_7'
cwd: C:\Users\myacn\AppData\Local\Temp\pip-install-l6yh1hi9\jq
Complete output (7 lines):
running bdist_wheel
running build
running build_ext
Downloading https://github.com/kkos/oniguruma/releases/download/v6.9.4/onig-6.9.4.tar.gz
Downloaded https://github.com/kkos/oniguruma/releases/download/v6.9.4/onig-6.9.4.tar.gz
Executing: ./configure CFLAGS=-fPIC --prefix=C:\Users\myacn\AppData\Local\Temp\pip-install-l6yh1hi9\jq\_deps\onig-install-6.9.4
error: [WinError 2] The system cannot find the file specified
----------------------------------------
ERROR: Failed building wheel for jq
ERROR: Could not build wheels for jq which use PEP 517 and cannot be installed directly
Looking online this link resolves for mac and linux, I'm not entirely familiar with the right installation for windows, trying %pip install autoconf automake libtool gives
Collecting autoconf
Using cached autoconf-0.7.1-py3-none-any.whl (10 kB)
Note: you may need to restart the kernel to use updated packages.
ERROR: Could not find a version that satisfies the requirement automake (from versions: none)
ERROR: No matching distribution found for automake
Collecting jq
Using cached jq-1.1.1.tar.gz (69 kB)
Installing build dependencies: started
Installing build dependencies: finished with status 'done'
Getting requirements to build wheel: started
Getting requirements to build wheel: finished with status 'done'
Preparing wheel metadata: started
Preparing wheel metadata: finished with status 'done'
Building wheels for collected packages: jq
Building wheel for jq (PEP 517): started
Building wheel for jq (PEP 517): finished with status 'error'
Failed to build jq
Note: you may need to restart the kernel to use updated packages.
LOAD DURATION: 0:00:11.548563
ERROR: Command errored out with exit status 1:
command: 'C:\Users\myacn\anaconda3\python.exe' 'C:\Users\myacn\anaconda3\lib\site-packages\pip\_vendor\pep517\_in_process.py' build_wheel 'C:\Users\myacn\AppData\Local\Temp\tmpygza7t_7'
cwd: C:\Users\myacn\AppData\Local\Temp\pip-install-l6yh1hi9\jq
Complete output (7 lines):
running bdist_wheel
running build
running build_ext
Downloading https://github.com/kkos/oniguruma/releases/download/v6.9.4/onig-6.9.4.tar.gz
Downloaded https://github.com/kkos/oniguruma/releases/download/v6.9.4/onig-6.9.4.tar.gz
Executing: ./configure CFLAGS=-fPIC --prefix=C:\Users\myacn\AppData\Local\Temp\pip-install-l6yh1hi9\jq\_deps\onig-install-6.9.4
error: [WinError 2] The system cannot find the file specified
----------------------------------------
ERROR: Failed building wheel for jq
ERROR: Could not build wheels for jq which use PEP 517 and cannot be installed directly
Seems like automake was the issue.
Reading another thread here, the error message is slightly different: the link talks about bottleneck, but mine does not. Going through that thread I first tried downgrading pip pip install pip==18.1, restarted kernel,
Here's the new errror:
Failed building wheel for jq
Command "C:\Users\myacn\anaconda3\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\myacn\\AppData\\Local\\Temp\\pip-install-m3mejes3\\jq\\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record C:\Users\myacn\AppData\Local\Temp\pip-record-_38z9t11\install-record.txt --single-version-externally-managed --compile" failed with error code 1 in C:\Users\myacn\AppData\Local\Temp\pip-install-m3mejes3\jq\
You are using pip version 18.1, however version 20.3b1 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.
I then downloaded Visual Studio, specifically checking C++ install tools like the steps indicated; I tried re-running with updated pip and 18.1, and get the same errors.

Error in cmd whlie installing CPPYY on windows

I have been trying to install Cppyy on my computerbut I'm new to this so I don't know a whole lot about this I have python and pip install on my computer
C:\WINDOWS\system32>python --version
Python 3.8.6
C:\WINDOWS\system32> pip --version
pip 20.2.3
when I try to run
pip install cppyy
cmd gives me error
ERROR: Command errored out with exit status 1:
command: 'C:\Users\sarfaraz\AppData\Local\Microsoft\WindowsApps\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\python.exe' 'C:\Users\sarfaraz\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\pip' install --ignore-installed --no-user --prefix 'C:\Users\sarfaraz\AppData\Local\Temp\pip-build-env-z4gw8trb\overlay' --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- 'CPyCppyy==1.11.4; python_implementation != '"'"'PyPy'"'"'' 'cppyy-backend==1.14.0; python_implementation != '"'"'PyPy'"'"'' 'cppyy-cling==6.21.3; python_implementation != '"'"'PyPy'"'"'' 'cppyy-cling<=6.18.2.3; python_implementation == '"'"'PyPy'"'"'' setuptools wheel
cwd: None
Complete output (42 lines):
Ignoring cppyy-cling: markers 'platform_python_implementation == "PyPy"' don't match your environment
Collecting CPyCppyy==1.11.4
Using cached CPyCppyy-1.11.4.tar.gz (178 kB)
Installing build dependencies: started
Installing build dependencies: finished with status 'error'
ERROR: Command errored out with exit status 1:
command: 'C:\Users\sarfaraz\AppData\Local\Microsoft\WindowsApps\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\python.exe' 'C:\Users\sarfaraz\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\pip' install --ignore-installed --no-user --prefix 'C:\Users\sarfaraz\AppData\Local\Temp\pip-build-env-hj42_3n3\overlay' --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- 'cppyy-cling>=6.21.3' 'cppyy-backend>=1.14' setuptools wheel
cwd: None
Complete output (31 lines):
Collecting cppyy-cling>=6.21.3
Using cached cppyy_cling-6.21.3-py2.py3-none-win_amd64.whl (18.2 MB)
Collecting cppyy-backend>=1.14
Using cached cppyy-backend-1.14.0.tar.gz (32 kB)
Installing build dependencies: started
Installing build dependencies: finished with status 'done'
Getting requirements to build wheel: started
Getting requirements to build wheel: finished with status 'done'
Preparing wheel metadata: started
Preparing wheel metadata: finished with status 'done'
Collecting setuptools
Using cached setuptools-50.3.0-py3-none-any.whl (785 kB)
Collecting wheel
Using cached wheel-0.35.1-py2.py3-none-any.whl (33 kB)
Building wheels for collected packages: cppyy-backend
Building wheel for cppyy-backend (PEP 517): started
Building wheel for cppyy-backend (PEP 517): finished with status 'error'
ERROR: Command errored out with exit status 1:
command: 'C:\Users\sarfaraz\AppData\Local\Microsoft\WindowsApps\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\python.exe' 'C:\Users\sarfaraz\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\pip\_vendor\pep517\_in_process.py' build_wheel 'C:\Users\sarfaraz\AppData\Local\Temp\tmpojxb8d41'
cwd: C:\Users\sarfaraz\AppData\Local\Temp\pip-install-znkz3pmg\cppyy-backend
Complete output (6 lines):
running bdist_wheel
running build
running build_ext
checking for build\temp.win-amd64-3.8\Release
creating build\temp.win-amd64-3.8\Release
error: Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools": https://visualstudio.microsoft.com/visual-cpp-build-tools/
----------------------------------------
ERROR: Failed building wheel for cppyy-backend
Failed to build cppyy-backend
ERROR: Could not build wheels for cppyy-backend which use PEP 517 and cannot be installed directly
----------------------------------------
ERROR: Command errored out with exit status 1: 'C:\Users\sarfaraz\AppData\Local\Microsoft\WindowsApps\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\python.exe' 'C:\Users\sarfaraz\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\pip' install --ignore-installed --no-user --prefix 'C:\Users\sarfaraz\AppData\Local\Temp\pip-build-env-hj42_3n3\overlay' --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- 'cppyy-cling>=6.21.3' 'cppyy-backend>=1.14' setuptools wheel Check the logs for full command output.
----------------------------------------
ERROR: Command errored out with exit status 1: 'C:\Users\sarfaraz\AppData\Local\Microsoft\WindowsApps\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\python.exe' 'C:\Users\sarfaraz\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\pip' install --ignore-installed --no-user --prefix 'C:\Users\sarfaraz\AppData\Local\Temp\pip-build-env-z4gw8trb\overlay' --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- 'CPyCppyy==1.11.4; python_implementation != '"'"'PyPy'"'"'' 'cppyy-backend==1.14.0; python_implementation != '"'"'PyPy'"'"'' 'cppyy-cling==6.21.3; python_implementation != '"'"'PyPy'"'"'' 'cppyy-cling<=6.18.2.3; python_implementation == '"'"'PyPy'"'"'' setuptools wheel Check the logs for full command output.
I found some instruction on the site but it was hard for me to follow it since I'm new to this stuff
Thanks in advance
Try to upgrade setuptools wheel
pip install -U setuptools wheel
End then try
pip install cppyy --no-index
If not help, that problem may by with python 3.8
By PyPi it’s supported <=3.7
As shown in the error message and mentioned already by hoefling, you need a system compiler, at the very minimum for system headers, but also for C++ library headers. Cling needs the code from these headers to parse any new C++ code you may give it that uses C++ standard library or Windows system features.
In principle, it's possible to ship a precompiled header with cppyy-cling that contains all system and C++ headers as IR bitcode, but MSVC likes to change header include guards between versions, so that would then only work if there is no system compiler. (It's somewhat better on Linux, but it, too, has changed include guard names in some instances.) This will be revisited once Cling supports precompiled modules (PCMs; as opposed to headers) on Windows. Then these PCMs can be prepackaged and installed conditionally if no system compiler is available. Module support in upstream is, however, still very fresh and not even released yet, so this is something that will only appear in the medium-term.
Anyway, MSVC is free these days. :)

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