Pycairo error on deploy
Hi.
I new on discord so I hope I am in the right place to put this question.
I got an deploy error (on railway) for my python-django project. I am also using xhtml2pdf which seams to include pycairo.
After adding xhtml2pdf I got this error when trying to deploy.
some of the the log:
#10 15.75 ╰─> [15 lines of output]
#10 15.75 running bdist_wheel
#10 15.75 running build
#10 15.75 running build_py
#10 15.75 creating build
#10 15.75 creating build/lib.linux-x86_64-cpython-38
#10 15.75 creating build/lib.linux-x86_64-cpython-38/cairo
#10 15.75 copying cairo/init.py -> build/lib.linux-x86_64-cpython-38/cairo
#10 15.75 copying cairo/init.pyi -> build/lib.linux-x86_64-cpython-38/cairo
#10 15.75 copying cairo/py.typed -> build/lib.linux-x86_64-cpython-38/cairo
#10 15.75 running build_ext
#10 15.75 Package cairo was not found in the pkg-config search path.
#10 15.75 Perhaps you should add the directory containing `cairo.pc'
#10 15.75 to the PKG_CONFIG_PATH environment variable
#10 15.75 No package 'cairo' found
#10 15.75 Command '['pkg-config', '--print-errors', '--exists', 'cairo >= 1.15.10']' returned non-zero exit status 1.
#10 15.75 [end of output]
I will apreciat any suggest to solve this problem. I will love to be able to deploy this proyect. On my computer (windows) ir run perfectly.
I include a complete log.
Thanks in advance,
Bruno
7 Replies
Project ID:
N/AI am not sure if the project id is this: greedy-blow
Project ID:
Project ID: greedy-blow
Project ID: N/A
Looks like you’re trying to install a package called
cairo. The correct package name is pycairo. Please change your requirements.txt accordingly
If pycairo is already in your requirements.txt, please share your repoHi Adam, I have been reasearching and it seams that pycairo is needed by xhtml2pdf . I see my requirements.txt pycairo is there.
In pycairo web the put:
Getting Started
Installation:
pip3 install pycairo
Installing Pycairo requires pkg-config and cairo including its headers. Here are some examples on how to install those for some platforms:
Ubuntu/Debian: sudo apt install libcairo2-dev pkg-config python3-dev
macOS/Homebrew: brew install cairo pkg-config
Arch Linux: sudo pacman -S cairo pkgconf
Fedora: sudo dnf install cairo-devel pkg-config python3-devel
openSUSE: sudo zypper install cairo-devel pkg-config python3-devel
So, it seams that I have to tell railway to install pkg-config and cairo.
You are correct. You will be able to install them as either nix packages, nix libraries, or apt packages. Please reference these docs to create a nixpacks.toml to place in your project. https://nixpacks.com/docs/configuration/file
Configuration File Reference | Nixpacks
App source + Nix packages + Docker = Image
you can search for available nix packages here
https://search.nixos.org/packages
Thanks Adam,
I add this on my nixpacks.toml
[phases.setup]
nixPkgs = ['...', 'cairo', 'pkg-config' ]
but I still get the error on the build proceso.
Part of the log:
║ setup │ python38, gcc, cairo, pkg-config ║
#8 19.87 /nix/store/hjic5yz9kb4h6dw2avw504z5j3fxgmjx-cairo-1.16.0
#8 21.47 copying path '/nix/store/hjic5yz9kb4h6dw2avw504z5j3fxgmjx-cairo-1.16.0' from 'https://cache.nixos.org';...
#10 11.08 Collecting pycairo==1.25.1
#10 18.48 Building wheels for collected packages: pycairo
#10 18.48 Building wheel for pycairo (pyproject.toml): started
#10 18.82 Building wheel for pycairo (pyproject.toml): finished with status 'error'
#10 18.83 × Building wheel for pycairo (pyproject.toml) did not run successfully.
#10 18.83 creating build/lib.linux-x86_64-cpython-38/cairo
#10 18.83 copying cairo/init.py -> build/lib.linux-x86_64-cpython-38/cairo
#10 18.83 copying cairo/init.pyi -> build/lib.linux-x86_64-cpython-38/cairo
#10 18.83 copying cairo/py.typed -> build/lib.linux-x86_64-cpython-38/cairo
#10 18.83 Package cairo was not found in the pkg-config search path.
#10 18.83 Perhaps you should add the directory containing `cairo.pc'
#10 18.83 No package 'cairo' found
#10 18.83 Command '['pkg-config', '--print-errors', '--exists', 'cairo >= 1.15.10']' returned non-zero exit status 1.
#10 18.83 ERROR: Failed building wheel for pycairo
#10 18.83 Failed to build pycairo
#10 18.83 ERROR: Could not build wheels for pycairo, which is required to install pyproject.toml-based projects
18.83 Command '['pkg-config', '--print-errors', '--exists', 'cairo >= 1.15.10']' returned non-zero exit status 1.
18.83 ERROR: Failed building wheel for pycairo
18.83 Failed to build pycairo
18.83 ERROR: Could not build wheels for pycairo, which is required to install pyproject.toml-based projects