I'm trying to run pip install flask-bcrypt for my flask application but i'm running into the following error
=============================DEBUG
ASSISTANCE=============================
If you are seeing a compilation error, please try the following steps to
successfully install bcrypt:
1) Upgrade to the latest pip and try again. This will fix errors for most
users. See: https://pip.pypa.io/en/stable/installing/#upgrading-pip
2) Ensure you have a recent Rust toolchain installed. bcrypt requires
rustc >= 1.56.0.
Python: 3.9.12
platform: Windows-10-10.0.19044-SP0
pip: n/a
setuptools: 65.5.0
setuptools_rust: 1.5.2
rustc: 1.64.0 (a55dd71d5 2022-09-19)
=============================DEBUG ASSISTANCE============================
error: `cargo rustc --lib --message-format=json-render-diagnostics --manifest-path src\_bcrypt\Cargo.toml --release -v --features 'pyo3/abi3-py36 pyo3/extension-module' -- --crate-type cdylib` failed with code 101
[end of output]
note: This error originates from a subprocess, and is likely not a problem with pip.
ERROR: Failed building wheel for bcrypt
Failed to build bcrypt
ERROR: Could not build wheels for bcrypt, which is required to install pyproject.toml-based projects
I have already tried upgrading to the latest pip, pip install wheel, and updating rustc. Sorry for the confusion, first time asking for help on stackoverflow.
The issue was caused by a lack of package management. I swapped from windows to ubuntu and created a virtual environment and the problem was resolved.
I am new to Python and try to install Jupyter Notebook from within a Windows command prompt window using:
pip install jupyter
But after a couple of minutes of downloading, an error message is displayed as shown below:
Installing build dependencies ... done
Getting requirements to build wheel ... done
Preparing wheel metadata ... error
ERROR: Command errored out with exit status 1:
command: 'c:\users\asd\appdata\local\programs\python\python38-32\python.exe
' 'c:\users\asd\appdata\local\programs\python\python38-32\lib\site-packages\pip\
_vendor\pep517\_in_process.py' prepare_metadata_for_build_wheel 'C:\Users\asd\Ap
pData\Local\Temp\tmpnj_hhq6y'
cwd: C:\Users\asd\AppData\Local\Temp\pip-install-_pnki5r8\pywinpty
Complete output (6 lines):
Cargo, the Rust package manager, is not installed or is not on PATH.
This package requires Rust and Cargo to compile extensions. Install it through
the system's package manager or via https://rustup.rs/
Checking for Rust toolchain....
----------------------------------------
ERROR: Command errored out with exit status 1: 'c:\users\asd\appdata\local\progr
ams\python\python38-32\python.exe' 'c:\users\asd\appdata\local\programs\python\p
ython38-32\lib\site-packages\pip\_vendor\pep517\_in_process.py' prepare_metadata
_for_build_wheel 'C:\Users\asd\AppData\Local\Temp\tmpnj_hhq6y' Check the logs for
full command output.
WARNING: You are using pip version 20.2.1; however, version 21.1 is available.
You should consider upgrading via the 'c:\users\asd\appdata\local\programs\pytho
n\python38-32\python.exe -m pip install --upgrade pip' command.
I have attached here just the last part of the error output.
How to fix this error for a successful installation of Jupyter Notebook?
EDIT1: I installed the Rust package from the link in the error message. After that I tried installing Jupyter Notebook once again, and this time after proceeding a few steps further than before, it output another error:
Building wheels for collected packages: pywinpty
Building wheel for pywinpty (PEP 517) ... - WARNING: Subprocess output does
not appear to be encoded as cp1252
WARNING: Subprocess output does not appear to be encoded as cp1252
error
ERROR: Command errored out with exit status 1:
command: 'c:\users\asd\appdata\local\programs\python\python38-32\python.exe'
'c:\users\asd\appdata\local\programs\python\python38-32\lib\site-packages\pip\_v
endor\pep517\_in_process.py' build_wheel 'C:\Users\asd\AppData\Local\Temp\tmpaj5
u66_y'
cwd: C:\Users\asd\AppData\Local\Temp\pip-install-mep4ye8d\pywinpty
Complete output (60 lines):
Running `maturin pep517 build-wheel -i c:\users\asd\appdata\local\programs\pyt
hon\python38-32\python.exe`
Compiling proc-macro2 v1.0.26
Compiling unicode-xid v0.2.2
Compiling syn v1.0.71
Compiling winapi v0.3.9
Compiling jobserver v0.1.22
error: could not compile `proc-macro2`
To learn more, run the command again with --verbose.
warning: build failed, waiting for other jobs to finish...
error: build failed
dY'¥ maturin failed
Caused by: Failed to build a native library through cargo
Caused by: Cargo build finished with "exit code: 101": `cargo rustc --messag
e-format json --manifest-path Cargo.toml --release --lib --`
dY\x8d1 Building a mixed python/rust project
dY"- Found pyo3 bindings
dY\x90\x8d Found CPython 3.8 at c:\users\asd\appdata\local\programs\python\pyt
hon38-32\python.exe
error: linker `link.exe` not found
|
= note: The system cannot find the file specified. (os error 2)
note: the msvc targets depend on the msvc linker but `link.exe` was not found
note: please ensure that VS 2013, VS 2015, VS 2017 or VS 2019 was installed wi
th the Visual C++ option
error: aborting due to previous error
error: linker `link.exe` not found
|
= note: The system cannot find the file specified. (os error 2)
note: the msvc targets depend on the msvc linker but `link.exe` was not found
note: please ensure that VS 2013, VS 2015, VS 2017 or VS 2019 was installed wi
th the Visual C++ option
error: aborting due to previous error
error: linker `link.exe` not found
|
= note: The system cannot find the file specified. (os error 2)
note: the msvc targets depend on the msvc linker but `link.exe` was not found
note: please ensure that VS 2013, VS 2015, VS 2017 or VS 2019 was installed wi
th the Visual C++ option
error: aborting due to previous error
Error: command ['maturin', 'pep517', 'build-wheel', '-i', 'c:\\users\\asd\\app
data\\local\\programs\\python\\python38-32\\python.exe'] returned non-zero exit
status 1
----------------------------------------
ERROR: Failed building wheel for pywinpty
Failed to build pywinpty
ERROR: Could not build wheels for pywinpty which use PEP 517 and cannot be insta
lled directly
WARNING: You are using pip version 20.2.1; however, version 21.1 is available.
You should consider upgrading via the 'c:\users\asd\appdata\local\programs\pytho
n\python38-32\python.exe -m pip install --upgrade pip' command.
Upgrade your pip first:
pip install --upgrade pip
Then:
pip install jupyter
I'reached this post after failing to install notebook on a 32-bit python 3.8.3 execution. And as far as I found, pywinpty, which is a dependence, does not support 32-bit executions (see sources below).
I solved the problem by installing python on its 64-bit version.
Sources:
How do I determine if my python shell is executing in 32bit or 64bit?
pip install fails on Python 3.8 32-bit, prevents Jupyter install #129 which simply says that wheels cannot be installed with 32 bit Python and that you should use 64 bit Python instead.
We can't generate 32 bit wheels, sorry. Please use a 64bit build of Python.. Was not my case but might be useful this similar issue when using python 3.8 64-bit
Error installing Jupyter & pywinpty (Python)
https://github.com/spyder-ide/pywinpty/issues/123
Do
pip install wheel
and try again. It worked for me.
What to do:
Check if your python is 64-bit version. If no, go to python site (for example, here is the link to download 3.7.9. Just click at the version that has label "for AMD64/EM64T/x64", do it with any version you wish, just I don't like to use the newest version). Remove yours (with the uninstall file) and download this. Don't forget to put the checkmark near "Add PATH" below;
Download Rust (the description is inside) - you need some files. Check the PATHs - if you want to change them, do it (the names of the variables and where they are - both are written, you can search in the Internet how to change PATH var's (for example));
Go to Windows Shell with admin mode (Win+X and you get the field) - here is the most comfortable place to work;
Go to your python.exe (for example, my way is C:\Users\user\AppData\Local\Programs\Python\Python37) - just for sure;
python.exe python -m pip install --upgrade pip;
python.exe pip install jupyter;
If an error was returned that contains the missing of wheel, try to download it: python.exe pip install wheel.
Donwload any library you miss during installation and continue since the step you stopped at.
Try using Anaconda. link to install conda https://www.anaconda.com/products/individual
then cmd : conda install numpy
cmd: conda install jupyter
cmd : jupyter notebook
The error message looks quite clear, you needs to install Cargo via https://rustup.rs/
I have faced the same issue when I'm using vscode. The simplest solution is to use conda instead of pip
conda install jupyterlab
While I am installing cryptography got the following error.
Failed building wheel for cryptography
Running setup.py clean for cryptography
Failed to build cryptography
Could not build wheels for cryptography which use PEP 517 and cannot be installed directly
i was have same problem
my config was : python==3.7 django==2.2 pip==19.0.3
and its not from pycharm
its from pip
just upgrade pip to 21.0.1
Update:
some error code:
running build_rust
=============================DEBUG ASSISTANCE=============================
If you are seeing a compilation error please try the following steps to
successfully install cryptography:
1) Upgrade to the latest pip and try again. This will fix errors for most
users. See: https://pip.pypa.io/en/stable/installing/#upgrading-pip
2) Read https://cryptography.io/en/latest/installation.html for specific
instructions for your platform.
3) Check our frequently asked questions for more information:
https://cryptography.io/en/latest/faq.html
4) Ensure you have a recent Rust toolchain installed:
https://cryptography.io/en/latest/installation.html#rust
5) If you are experiencing issues with Rust for *this release only* you may
set the environment variable `CRYPTOGRAPHY_DONT_BUILD_RUST=1`.
=============================DEBUG ASSISTANCE=============================
error: Can not find Rust compiler
----------------------------------------
Running setup.py clean for cryptography
Failed to build cryptography
Failed building wheel for cryptography
Could not build wheels for cryptography which use PEP 517 and cannot be installed directly
I am trying to install pycurl on OS X Mavericks. I have downloaded and installed the Xcode dev tools to have some compiler. I went into the Xcode preferences and made sure that I have downloaded all the compliers I would need but still getting this error
When I try to install pycurl I get the following errors. Any help would be much appreciated.
local-mbp:~ $ sudo easy_install pycurl
Password:
Searching for pycurl
Reading http://pypi.python.org/simple/pycurl/
Best match: pycurl 7.19.3.1
Downloading https://pypi.python.org/packages/source/p/pycurl/pycurl-7.19.3.1.tar.gz#md5=6df8fa7fe8b680d93248da1f8d4fcd12
Processing pycurl-7.19.3.1.tar.gz
Running pycurl-7.19.3.1/setup.py -q bdist_egg --dist-dir /tmp/easy_install-jKMmtE/pycurl-7.19.3.1/egg-dist-tmp-9z89Ns
Using curl-config (libcurl 7.30.0)
clang: error: unknown argument: '-mno-fused-madd' [-Wunused-command-line-argument-hard-error-in-future]
clang: note: this will be a hard error (cannot be downgraded to a warning) in the future
error: Setup script exited with error: command 'cc' failed with exit status 1
local-mbp:~ $ which gcc
/usr/bin/gcc
local-mbp:~$ which cc
/usr/bin/cc
local-mbp:~$
Try this:
brew install python
Double check you are using brewed Python:
which python
(Should return something like /usr/local/bin/python)
Install pycurl with pip.
pip install pycurl
I just tested this on Mavericks.
Try specify the ARCHFLAGS env var:
ARCHFLAGS="-arch x86_64" pip install pycurl
pycurl installs fine on python2.6 but i get the following error when I try to install in on 2.7 via easy_install on maverick
$ sudo easy_install pycurl
install_dir /usr/local/lib/python2.7/dist-packages/
Searching for pycurl
Reading http://pypi.python.org/simple/pycurl/
Reading http://pycurl.sourceforge.net/
Reading http://pycurl.sourceforge.net/download/
Best match: pycurl 7.19.0
Downloading http://pycurl.sourceforge.net/download/pycurl-7.19.0.tar.gz
Processing pycurl-7.19.0.tar.gz
Running pycurl-7.19.0/setup.py -q bdist_egg --dist-dir /tmp/easy_install-PFzxzf/pycurl-7.19.0/egg-dist-tmp-oAFjdV
Using curl-config (libcurl 7.21.0)
src/pycurl.c:42: fatal error: Python.h: No such file or directory
compilation terminated.
error: Setup script exited with error: command 'gcc' failed with exit status 1
Is 2.7 not compatible with pycurl?
sudo apt-get install python-dev
This installs the Python development package that is required and fixes the problem of the missing header file.
(Please read the comment by Corey)