Installation problem

[karolszczepanek11]

I am trying to install Weblate on Ubuntu 18.04.5 LTS
Before installation I added python 3.7.5 and did update-alternatives so "python" and "python3" link to python 3.7.5 version
I followed instruction but i have an error on step:
pip install Weblate
All previous steps of installation went well (no error)

Collecting Weblate
Using cached Weblate-4.4-py3-none-any.whl (24.7 MB)
Requirement already satisfied: setuptools>=40.3.0 in ./weblate-env/lib/python3.7/site-packages (from Weblate) (51.0.0)
Collecting diff-match-patch==20200713
Using cached diff_match_patch-20200713-py3-none-any.whl (61 kB)
Collecting social-auth-app-django==4.0.0
Using cached social_auth_app_django-4.0.0-py3-none-any.whl (24 kB)
Collecting social-auth-core==3.3.3
Using cached social_auth_core-3.3.3-py3-none-any.whl (326 kB)
Collecting translation-finder==2.6
Using cached translation_finder-2.6-py3-none-any.whl (81 kB)
Collecting weblate-schemas==0.5
Using cached weblate_schemas-0.5-py3-none-any.whl (8.0 kB)
Collecting Whoosh==2.7.4
Using cached Whoosh-2.7.4-py2.py3-none-any.whl (468 kB)
Collecting bleach<3.3.0,>=3.1.1
Using cached bleach-3.2.1-py2.py3-none-any.whl (145 kB)
Collecting borgbackup<1.2.0,>=1.1.9
Using cached borgbackup-1.1.14.tar.gz (3.8 MB)
Collecting celery[redis]!=5.0.0,!=5.0.1,!=5.0.2,<5.1,>=4.4.5
Using cached celery-5.0.4-py3-none-any.whl (392 kB)
Collecting billiard<4.0,>=3.6.3.0
Using cached billiard-3.6.3.0-py3-none-any.whl (89 kB)
Collecting click<8.0,>=7.0
Using cached click-7.1.2-py2.py3-none-any.whl (82 kB)
Collecting click-didyoumean>=0.0.3
Using cached click-didyoumean-0.0.3.tar.gz (2.6 kB)
Collecting click-plugins>=1.1.1
Using cached click_plugins-1.1.1-py2.py3-none-any.whl (7.5 kB)
Collecting click-repl>=0.1.6
Using cached click_repl-0.1.6-py3-none-any.whl (4.2 kB)
Collecting cryptography>=1.4
Using cached cryptography-3.3.1-cp36-abi3-manylinux2010_x86_64.whl (2.6 MB)
Collecting cffi>=1.12
Using cached cffi-1.14.4-cp37-cp37m-manylinux1_x86_64.whl (402 kB)
Collecting cssselect<1.2.0,>=1.0.0
Using cached cssselect-1.1.0-py2.py3-none-any.whl (16 kB)
Collecting Cython<0.30,>=0.29.14
Using cached Cython-0.29.21-cp37-cp37m-manylinux1_x86_64.whl (2.0 MB)
Collecting defusedxml>=0.5.0rc1
Using cached defusedxml-0.7.0rc1-py2.py3-none-any.whl (25 kB)
Collecting Django<3.2,>=3.1
Using cached Django-3.1.4-py3-none-any.whl (7.8 MB)
Collecting asgiref<4,>=3.2.10
Using cached asgiref-3.3.1-py3-none-any.whl (19 kB)
Collecting django-appconf<1.1,>=1.0.3
Using cached django_appconf-1.0.4-py2.py3-none-any.whl (6.3 kB)
Collecting django-compressor<2.5,>=2.4
Using cached django_compressor-2.4-py2.py3-none-any.whl (126 kB)
Collecting rcssmin==1.0.6
Using cached rcssmin-1.0.6.tar.gz (582 kB)
Collecting rjsmin==1.1.0
Using cached rjsmin-1.1.0-cp37-cp37m-manylinux1_x86_64.whl (24 kB)
Collecting django-crispy-forms<1.11.0,>=1.9.0
Using cached django_crispy_forms-1.10.0-py3-none-any.whl (107 kB)
Collecting django-filter<2.5.0,>=2.4.0
Using cached django_filter-2.4.0-py3-none-any.whl (73 kB)
Collecting django-redis<4.13.0,>=4.11.0
Using cached django_redis-4.12.1-py3-none-any.whl (19 kB)
Collecting djangorestframework<3.13.0,>=3.11.0
Using cached djangorestframework-3.12.2-py3-none-any.whl (957 kB)
Collecting filelock<3.1.0,>=3.0.0
Using cached filelock-3.0.12-py3-none-any.whl (7.6 kB)
Collecting GitPython<3.2.0,>=2.1.15
Using cached GitPython-3.1.11-py3-none-any.whl (159 kB)
Collecting gitdb<5,>=4.0.1
Using cached gitdb-4.0.5-py3-none-any.whl (63 kB)
Collecting hiredis<1.2.0,>=1.0.1
Using cached hiredis-1.1.0-cp37-cp37m-manylinux2010_x86_64.whl (62 kB)
Collecting html2text<2020.1.17,>=2019.8.11
Using cached html2text-2020.1.16-py3-none-any.whl (32 kB)
Collecting jellyfish<0.9.0,>=0.7.2
Using cached jellyfish-0.8.2-cp37-cp37m-manylinux2014_x86_64.whl (90 kB)
Collecting jsonschema<3.3.0,>=3.0.0
Using cached jsonschema-3.2.0-py2.py3-none-any.whl (56 kB)
Collecting attrs>=17.4.0
Using cached attrs-20.3.0-py2.py3-none-any.whl (49 kB)
Collecting kombu<6.0,>=5.0.0
Using cached kombu-5.0.2-py2.py3-none-any.whl (180 kB)
Collecting amqp<6.0.0,>=5.0.0
Using cached amqp-5.0.2-py3-none-any.whl (46 kB)
Collecting vine<6.0,>=5.0.0
Using cached vine-5.0.0-py2.py3-none-any.whl (9.4 kB)
Collecting importlib-metadata
Using cached importlib_metadata-3.3.0-py3-none-any.whl (10 kB)
Collecting lxml<4.7.0,>=4.4.0
Using cached lxml-4.6.2-cp37-cp37m-manylinux1_x86_64.whl (5.5 MB)
Collecting misaka<2.2.0,>=2.1.0
Using cached misaka-2.1.1.tar.gz (125 kB)
Collecting oauthlib>=1.0.3
Using cached oauthlib-3.1.0-py2.py3-none-any.whl (147 kB)
Collecting openpyxl!=3.0.2,<3.1,>=2.6.0
Using cached openpyxl-3.0.5-py2.py3-none-any.whl (242 kB)
Collecting Pillow<8.1.0,>=6.0.0
Using cached Pillow-8.0.1-cp37-cp37m-manylinux1_x86_64.whl (2.2 MB)
Collecting pycairo>=1.15.3
Using cached pycairo-1.20.0.tar.gz (344 kB)
Installing build dependencies ... done
Getting requirements to build wheel ... done
Preparing wheel metadata ... done
Collecting pygobject>=3.27.0
Using cached PyGObject-3.38.0.tar.gz (712 kB)
Installing build dependencies ... error
ERROR: Command errored out with exit status 1:
command: /home/weblate/weblate-env/bin/python3 /home/weblate/weblate-env/lib/python3.7/site-packages/pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-ryg4ilsw/overlay --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- setuptools wheel pycairo
cwd: None
Complete output (42 lines):
Collecting pycairo
Using cached 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'
Collecting wheel
Using cached wheel-0.36.2-py2.py3-none-any.whl (35 kB)
Collecting setuptools
Using cached setuptools-51.0.0-py3-none-any.whl (785 kB)
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: /home/weblate/weblate-env/bin/python3 /home/weblate/weblate-env/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py build_wheel /tmp/tmp43k06iql
cwd: /tmp/pip-install-pt6uqawx/pycairo_530ec788871c4cbf85562ef987b616f4
Complete output (19 lines):
running bdist_wheel
running build
running build_py
creating build
creating build/lib.linux-x86_64-3.7
creating build/lib.linux-x86_64-3.7/cairo
copying cairo/init.py -> build/lib.linux-x86_64-3.7/cairo
copying cairo/init.pyi -> build/lib.linux-x86_64-3.7/cairo
copying cairo/py.typed -> build/lib.linux-x86_64-3.7/cairo
running build_ext
building 'cairo._cairo' extension
creating build/temp.linux-x86_64-3.7
creating build/temp.linux-x86_64-3.7/cairo
x86_64-linux-gnu-gcc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O2 -Wall -g -fstack-protector-strong -Wformat -Werror=format-security -g -fwrapv -O2 -g -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -DPYCAIRO_VERSION_MAJOR=1 -DPYCAIRO_VERSION_MINOR=20 -DPYCAIRO_VERSION_MICRO=0 -I/usr/include/cairo -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/python3.7m -I/home/weblate/weblate-env/include/python3.7m -c cairo/device.c -o build/temp.linux-x86_64-3.7/cairo/device.o -Wall -Warray-bounds -Wcast-align -Wconversion -Wextra -Wformat=2 -Wformat-nonliteral -Wformat-security -Wimplicit-function-declaration -Winit-self -Winline -Wmissing-format-attribute -Wmissing-noreturn -Wnested-externs -Wold-style-definition -Wpacked -Wpointer-arith -Wreturn-type -Wshadow -Wsign-compare -Wstrict-aliasing -Wundef -Wunused-but-set-variable -Wswitch-default -Wno-missing-field-initializers -Wno-unused-parameter -Wno-unused-command-line-argument -fno-strict-aliasing -fvisibility=hidden -std=c99
cairo/device.c:30:10: fatal error: Python.h: No such file or directory
#include <Python.h>
^~~~~~~~~~
compilation terminated.
error: command 'x86_64-linux-gnu-gcc' failed with 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: /home/weblate/weblate-env/bin/python3 /home/weblate/weblate-env/lib/python3.7/site-packages/pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-ryg4ilsw/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.

[karolszczepanek11]

used python 3.6.9 instead of 3.7.5

[github-actions]

The issue you have reported is resolved now. If you don’t feel it’s right, please follow it’s labels to get a clue and take further steps.

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