devbox
devbox copied to clipboard
jetify-com
[Python-pip] I can't install toga
What happened?
If I try to install the toga library through pip inside .venv it gives me this error:
❯ pip install toga
Collecting toga
Using cached toga-0.4.1-py3-none-any.whl.metadata (4.0 kB)
Collecting toga-gtk==0.4.1 (from toga)
Using cached toga_gtk-0.4.1-py3-none-any.whl.metadata (3.0 kB)
Collecting gbulb>=0.5.3 (from toga-gtk==0.4.1->toga)
Using cached gbulb-0.6.4-py3-none-any.whl (17 kB)
Requirement already satisfied: pycairo>=1.17.0 in /nix/store/67mw87bh762ismbnbd239xw59yv76p9k-python3.12-pycairo-1.25.1/lib/python3.12/site-packages (from toga-gtk==0.4.1->toga) (1.25.1)
Collecting pygobject>=3.46.0 (from toga-gtk==0.4.1->toga)
Using cached PyGObject-3.46.0.tar.gz (723 kB)
Installing build dependencies ... error
error: subprocess-exited-with-error
× pip subprocess to install build dependencies did not run successfully.
│ exit code: 1
╰─> [45 lines of output]
Collecting setuptools
Using cached setuptools-69.0.3-py3-none-any.whl.metadata (6.3 kB)
Collecting wheel
Using cached wheel-0.42.0-py3-none-any.whl.metadata (2.2 kB)
Collecting pycairo
Using cached pycairo-1.25.1.tar.gz (347 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'
Installing backend dependencies: started
Installing backend dependencies: finished with status 'done'
Preparing metadata (pyproject.toml): started
Preparing metadata (pyproject.toml): finished with status 'done'
Using cached setuptools-69.0.3-py3-none-any.whl (819 kB)
Using cached wheel-0.42.0-py3-none-any.whl (65 kB)
Building wheels for collected packages: pycairo
Building wheel for pycairo (pyproject.toml): started
Building wheel for pycairo (pyproject.toml): finished with status 'error'
error: subprocess-exited-with-error
× Building wheel for pycairo (pyproject.toml) did not run successfully.
│ exit code: 1
╰─> [15 lines of output]
running bdist_wheel
running build
running build_py
creating build
creating build/lib.linux-x86_64-cpython-312
creating build/lib.linux-x86_64-cpython-312/cairo
copying cairo/__init__.py -> build/lib.linux-x86_64-cpython-312/cairo
copying cairo/__init__.pyi -> build/lib.linux-x86_64-cpython-312/cairo
copying cairo/py.typed -> build/lib.linux-x86_64-cpython-312/cairo
running build_ext
Package cairo was not found in the pkg-config search path.
Perhaps you should add the directory containing `cairo.pc'
to the PKG_CONFIG_PATH environment variable
Package 'cairo', required by 'virtual:world', not found
Command '['pkg-config', '--print-errors', '--exists', 'cairo >= 1.15.10']' returned non-zero exit status 1.
[end of output]
note: This error originates from a subprocess, and is likely not a problem with pip.
ERROR: Failed building wheel for pycairo
Failed to build pycairo
ERROR: Could not build wheels for pycairo, which is required to install pyproject.toml-based projects
[end of output]
note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error
× pip subprocess to install build dependencies did not run successfully.
│ exit code: 1
╰─> See above for output.
note: This error originates from a subprocess, and is likely not a problem with pip.
(devbox)
installing cairo or pycairo doesn't solve it
Steps to reproduce
Create a devbox with the latest version of python and try to install toga through .venv
Command
add, shell
devbox.json
{
"packages": [
"pipx@latest",
"python@latest",
"cairo@latest",
"python312Packages.pycairo@latest"
],
"shell": {
"init_hook": [
". $VENV_DIR/bin/activate"
],
"scripts": {
"test": [
"echo \"Error: no test specified\" && exit 1"
]
}
}
}
Devbox version
0.9.0
Nix version
nix (Nix) 2.18.1
What system does this bug occur on?
Linux (x86-64)
Debug logs
No response
Hi @Heus-Sueh, you're definitely in the right place! It looks like toga requires a few native libraries.
Try removing python312Packages.pycairo (we recommend just using a pip virtual environment) and installing the dev outputs for cairo and gobject-introspection. You'll also need pkg-config so that pip can find the libraries:
dx rm python312Packages.pycairo
dx add pkg-config@latest
dx add cairo@latest -o out,dev
dx add gobject-introspection@latest -o out,dev
That should get you a devbox.json that looks something like:
{
"packages": {
"pipx": "latest",
"python": "latest",
"pkg-config": "latest",
"cairo": {
"version": "latest",
"outputs": ["out", "dev"]
},
"gobject-introspection": {
"version": "latest",
"outputs": ["out", "dev"]
}
},
"shell": {
"init_hook": [
". $VENV_DIR/bin/activate"
]
}
}
Hi @Heus-Sueh, you're definitely in the right place! It looks like toga requires a few native libraries.
Try removing
python312Packages.pycairo(we recommend just using a pip virtual environment) and installing thedevoutputs forcairoandgobject-introspection. You'll also needpkg-configso thatpipcan find the libraries:dx rm python312Packages.pycairo dx add pkg-config@latest dx add cairo@latest -o out,dev dx add gobject-introspection@latest -o out,devThat should get you a
devbox.jsonthat looks something like:{ "packages": { "pipx": "latest", "python": "latest", "pkg-config": "latest", "cairo": { "version": "latest", "outputs": ["out", "dev"] }, "gobject-introspection": { "version": "latest", "outputs": ["out", "dev"] } }, "shell": { "init_hook": [ ". $VENV_DIR/bin/activate" ] } }
Thanks for the help, I'll test this solution later
Sorry for the delay, I just tested it but now it's giving me this dependency error: OSError: libfontconfig.so.1: cannot open shared object file: No such file or directory
full log:
(.venv) (devbox) ➜ pokemon_demo-Toga git:(main) ✗ briefcase dev
[pokemon-demo] Starting in dev mode...
===========================================================================
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "<frozen runpy>", line 226, in run_module
File "<frozen runpy>", line 98, in _run_module_code
File "<frozen runpy>", line 88, in _run_code
File "/var/home/heus/Documents/Projects/VSCodium/Python/Briefcase-Projects/pokemon_demo-Toga/src/pokemon_demo/__main__.py", line 4, in <module>
main().main_loop()
^^^^^^
File "/var/home/heus/Documents/Projects/VSCodium/Python/Briefcase-Projects/pokemon_demo-Toga/src/pokemon_demo/app.py", line 142, in main
return MainApp("Pokemon Demo", "org.pokemon.demo")
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/var/home/heus/Documents/Projects/VSCodium/Python/Briefcase-Projects/pokemon_demo-Toga/.devbox/virtenv/python/.venv/lib/python3.12/site-packages/toga/app.py", line 466, in __init__
self.factory = get_platform_factory()
^^^^^^^^^^^^^^^^^^^^^^
File "/var/home/heus/Documents/Projects/VSCodium/Python/Briefcase-Projects/pokemon_demo-Toga/.devbox/virtenv/python/.venv/lib/python3.12/site-packages/toga/platform.py", line 111, in get_platform_factory
factory = importlib.import_module(f"{backend.value}.factory")
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/var/home/heus/Documents/Projects/VSCodium/Python/Briefcase-Projects/pokemon_demo-Toga/.devbox/nix/profile/default/lib/python3.12/importlib/__init__.py", line 90, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
File "<frozen importlib._bootstrap>", line 1331, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 935, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 995, in exec_module
File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
File "/var/home/heus/Documents/Projects/VSCodium/Python/Briefcase-Projects/pokemon_demo-Toga/.devbox/virtenv/python/.venv/lib/python3.12/site-packages/toga_gtk/factory.py", line 1, in <module>
from . import dialogs
File "/var/home/heus/Documents/Projects/VSCodium/Python/Briefcase-Projects/pokemon_demo-Toga/.devbox/virtenv/python/.venv/lib/python3.12/site-packages/toga_gtk/dialogs.py", line 4, in <module>
from .libs import Gtk
File "/var/home/heus/Documents/Projects/VSCodium/Python/Briefcase-Projects/pokemon_demo-Toga/.devbox/virtenv/python/.venv/lib/python3.12/site-packages/toga_gtk/libs/__init__.py", line 1, in <module>
from .fontconfig import FontConfig # noqa: F401, F403
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/var/home/heus/Documents/Projects/VSCodium/Python/Briefcase-Projects/pokemon_demo-Toga/.devbox/virtenv/python/.venv/lib/python3.12/site-packages/toga_gtk/libs/fontconfig.py", line 5, in <module>
fontconfig = CDLL(libfontconfig)
^^^^^^^^^^^^^^^^^^^
File "/var/home/heus/Documents/Projects/VSCodium/Python/Briefcase-Projects/pokemon_demo-Toga/.devbox/nix/profile/default/lib/python3.12/ctypes/__init__.py", line 379, in __init__
self._handle = _dlopen(self._name, mode)
^^^^^^^^^^^^^^^^^^^^^^^^^
OSError: libfontconfig.so.1: cannot open shared object file: No such file or directory
Problem running app pokemon-demo.
https://stackoverflow.com/questions/77247893/modulenotfounderror-no-module-named-distutils-in-python-3-12