Install pycairo or py2cairo using buildout - django

Does anyone have any experience with trying to install cairo for django using buildout?
It will install pycairo or py2cairo (the first is for python >3.0, the latest is for python 2.6, which I Am using)
I found 2 recipes to use for installation, both of them gives me errors, in buildout.cfg I have them as 2 parts (of course tried them seperately, not thogether).
The errors are totally different, but the result is the same: I can't get cairo installed using buildout.......
based on: http://pypi.python.org/pypi/tl.buildout_gtk/
[cairo_tl]
recipe = tl.buildout_gtk
#pycairo-url = http://cairographics.org/releases/py2cairo-1.10.0.tar.bz2
pycairo-url = http://cairographics.org/releases/py2cairo-1.8.10.tar.gz
pycairo-md5sum = http://cairographics.org/releases/py2cairo-1.8.10.tar.gz.md5
based on: https://bitbucket.org/lgs/yaco.recipe.pycairo
[cairo_yaco]
recipe = yaco.recipe.pycairo
find-links = http://pypi.python.org/pypi/yaco.recipe.pycairo/0.1.1
#find-links = http://pypi.python.org/pypi/yaco.recipe.pycairo/0.1
# pkg-config-path ?
Both need a local install of cairo (pycairo and py2cairo depend on this):
so use on the server:
sudo apt-get install libcairo2-dev
The part jusing tl.buildout_gtk:
Either using the py2cairo-1.10.0 or pycairo-1.8.2 gives me a MD5 checksum mismatch
(see for available releases: http://cairographics.org/releases/)
e.g:
Error: MD5 checksum mismatch downloading 'http://cairographics.org/releases/py2cairo-1.10.0.tar.bz2'
or:
Error: MD5 checksum mismatch downloading 'http://cairographics.org/releases/py2cairo-1.8.10.tar.gz'
The part jusing yaco:
I Am pretty sure this part is not configured correctly (pkg-config-path refering to the local cairo package), but I do not even get to that point.
It gives an error:
DistributionNotFound: zc.recipe.cmmi
However, this is installed in the eggs
By the way, I had the same kind of headache trying to install PIL by buildout, which I solved combining a lot of options and posts on the internet, together with a lot of time and trials and errors.
If anyone want to know how I finally got it working, just ask, and I will publish it.
(I consider myselve still a django starter, so I do not know for sure if anyone is interested in the solution)
PIL does not have all the options I found in cairo, so I started using cairo. On my local PC everything works fine (ubuntu desktop), on my server (Ubuntu server) I can't getting it to work......
Any other options for making drawings on the fly..... (like matplotlib...) let me know.

Pretty sure you have to give the real md5 hash to the pycairo-md5 option instead of a string with some url in it.

I would avoid specialized recipes like those two whenever possible. There are some cases when a specialized recipe really is needed, but those are cases where the dependency is so egregiously eccentric that no common build/install pattern is usable. I don't know pycairo so that may be the case.
But before assuming it is, try the following. Always try using an egg first by adding it to the eggs option of the relevant buildout part. If that doesn't work, update your question with those details, and then try adding a separate zc.recipe.egg part with build options that may help the distribution build successfully. If that doesn't work or the distribution uses a ./configure && make && make install (AKA "CMMI") build system, update your question with those details, and then try using zc.recipe.cmmi to build the package after which you can use the extra-paths option of your zc.recipe.egg part to include the relevant bits of the CMMI part (extra-paths = ${cmmi-part:location}/weird/path/to/python/modules).
This is the general dance for getting poorly/oddly behaved distributions. If this doesn't work, then a specialized recipe may be in order but in general there's a way to get it to work with the above and that will be much more maintainable.

Related

Python2 required as dependencie but already installed

First of all, sorry for my english and sorry for taking your time, I'm pretty sure the answers are online but it seems like I can't find the right keywords for this issue.
The problem: Python2 is installed but still asked as a dependency for every python2 module I want to install with my package manager.
I built python2 from source on Archlinux in a proot environment
(because I use termux on a non rooted phone and it's probably why yay did not worked as expected to install python2) and I think I did it well because "python2" open the python command line and "python2 -V" return me "Python 2.7.18", i can execute python scripts with it, etc.
I built python by downloading and uncompressing python2 from python.org, then in the uncompressed file ./configure --enable-optimization , make -s and make install.
I'm a noob so i don't know but i probably just need a way to handle python2 with pacman or a way to tell pacman that python2 is indeed installed.
repo.
I know to handle manualy built pkgs with pacman, but not software built from source. So i'v found a PKGBUILD for python2 but (again, probably because of the proot) when i use makepkg here what's happen :
[...
...
...]
==> Extracting sources...
-> Extracting Python-2.7.18.tar.xz with bsdtar
==> Starting prepare()...
bsdtar: Removing leading '/' from member names
patching file Makefile.pre.in
patch: setting attribute security.selinux for security.selinux: Permission denied
==> ERROR: A failure occurred in prepare().
Aborting...
So if anyone know how could i make makepkg works as intended or how could i tell pacman that python2 is already installed, it would totaly make my day.
PS : I know python2 is deprecated and as it's not updated anymore the security is getting worse and worse, but it's not for my main setup so don't worry. I also think i could install modules manually but it is not something i wish to do since i'd like to install the all BlackArch repo.

Pabot - Unable to run parallel robotframework tests

So, I'm working on a robotframework test project, and the goal is to run several test suites in parallel. For this purpose, pabot was chosen as the solution. I am trying to implement it, but with little success.
My issue is: after installing Pabot (which, I might say, I did by cloning the project and running "setup.py install", instead of using pip, since the corporate proxy I'm behind has proven an obstacle I can't overcome), I created a new directory in the project tree, moved some suites there, and ran:
pabot --processes 2 --outputdir pabot_results Login*.robot
Doing so results in the following error message:
2018-10-10 10:27:30.449000 [PID:9676] [0] EXECUTING Suites.LoginAdmin
2018-10-10 10:27:30.449000 PID:400 EXECUTING Suites.LoginUser
2018-10-10 10:27:30.777000 PID:400 FAILED Suites.LoginUser
2018-10-10 10:27:30.777000 [PID:9676] [0] FAILED Suites.LoginAdmin
WARN: No output files in "pabot_results\pabot_results"
Output:
[ ERROR ] Reading XML source '' failed: invalid mode ('rb') or filename
Try --help for usage information.
Elapsed time: 0 minutes 0.578 seconds
Upon inspecting the stderr file that was generated, I have this message:
Traceback (most recent call last):
File "C:\Python27\Lib\site-packages\robotframework-3.1a2.dev1-py2.7.egg\robot\running\runner.py", line 22, in
from .context import EXECUTION_CONTEXTS
ValueError: Attempted relative import in non-package
Apparently, this has to do with something from the runner.py script, which, if I'm not mistaken, came with the installation of robotframework. Since manually modifying that script does not seem to me the optimal solution, my question is, what am I missing here? Did I forget to do anything while setting this up? Or is this an issue of compatibility between versions?
This project is using Maven as the tool to manage dependencies. The version I am running is 3.5.4. I am using a Windows 10, 64bit system; I have Python 2.7.14, and Robot Framework 3.1a2.dev1. The Pabot version is 0.44. Obviously, I added C:\Python27 and C:\Python27\Scripts to the PATH environment variable.
Edit: I am also using robotframework-maven-plugin version 1.4.0.8, if that happens to be relevant.
Edit 2: added the error messages in text format.
I believe I've come across an issue similar when setting up parallel execution on my machine. Firstly I would confirm that pabot is installed using pip show robotframework-pabot.
Then you should define the directory your results are going to using -d.
I then modified the name of the -o to Output.xml to make it easy to identify.
This is a copy of the code I use. Runs optimally with 8 processes
pabot --processes 8 -d results -o Output.xml Tests
Seems that you stumbled on a bug in the prerelease version of robot framework (3.1a2.dev1).
Please install a release version of robot framework. For example 3.0.4.
Just in case anyone happens to stumble upon this issue in the future:
Since I can't use pip, and I tried a good deal of workarounds that eventually made things more unstable, I ended up saving my project and removing everything Python-related from my system, so as to allow me to install everything from scratch. In a Windows 10, 64bit system, I used:
Python 2.7.14
wxPython 2.8.12.1, win64, unicode, for py27
setuptools 40.2.0 (to allow me to use the easy_install command)
Robot Framework 3.0.4
robotremoteserver 1.1
Selenium2Library 3.0.0
and Pabot version 0.45.
I might add that, when installing the Selenium2Library the way I described above, it eventually tries to download some things from the pip repositories - which, if you have a proxy, will cause you trouble. I solved this problem by browsing https://pypi.org/simple/selenium/, manually downloading the 2.53.6 .tar.gz file, then extracting it and running setup.py install on the command line.
PS: Ideally, though, anyone should be able to use proxy settings from the command line (--proxy http://user:password#server:port) to get pip and then use it; however, for some reason, probably related to network security configurations that I didn't want to lose time with, this didn't work in my case.

Building Perf with Babeltrace on CentOS 7.2 using rpms

I wish to use CTF conversion with perf. From the scarce information around, I've figured out that I need to recompile perf.
I've installed the epel repository and used yum to install
babeltrace and libbabeltrace
for the run time as well as
libunwind-devel slang-devel libbabeltrace-devel and asciidoc
for compilation.
I cloned git.kernel.org (as alternative I also tried github.com/torvalds) and used
LIBBABELTRACE=1 make
to build the perf with babeltrace support. However, I get the error:
Makefile.config:780: No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev
So I try adding LIBBABELTRACE_DIR with /usr but this, too, fails. Checking out the Makefile.conf, I see that the configuration is looking in the wrong places: it is set up to use a locally compiled babeltrace with well defined subdirectories (include and lib), but these are NOT used when installing from rpm (yum). The rpm places them in /usr/include/babeltrace and /usr/lib64.
Patching the Makefile also doesn't help.
So, short of being forced to use a locally compiled babeltrace, what options do I have?
This is for a cluster of 26 nodes and I really would prefer a simple 'yum install' as this simplifies restaging nodes when the get corrupted (we do research with them and regularily corrupt stuff) and does not require setting specific environments.
ADDENDUM:
I tried compiling babeltrace from https://github.com/efficios/babeltrace.git: this, too, fails with the error:
babeltrace-cfg-cli-args.c:2390:29: error: ‘POPT_ARG_LONGLONG’ undeclared (first use in this function)
and, surely enough, popt.h does not define POPT_ARG_LONGLONG.
Thanks in advance.

OpenCV: libdc1394 error: Failed to initialize libdc1394

I installed OpenCV correctly on Ubuntu 14.04. However, when I run: import cv2 I get this error message:
>>> import cv2
libdc1394 error: Failed to initialize libdc1394
I read the answers to this question (and the different links posted there such as this interesting but finally useless one for my case) but no solution worked for me. I have no such file /dev/raw1394. So I installed the library:
sudo apt-get install libdc1394-22-dev libdc1394-22 libdc1394-utils
But still get the same error.
Note that this answer is the only one that works for me, however I can not pick it because I need to use camera in my application.
How can I resolve this ?
Maybe disabling the driver isn't the best solution, but so far this hasn't given me any problems and was the easiest way I found to solve the issue:
sudo ln /dev/null /dev/raw1394
Attention: It is not a permanent solution.
I vaguely remember a similar problem I once had. It has something to do with user-level permission to firewire devices. You need to add a new udev rule. Create a file /etc/udev/rules.d/raw1394.rules and add the following line:
KERNEL=="raw1394", GROUP="video"
Details can be found here and here.

Installing GDAL via buildout on MacOSX

I'm trying to install GDAL via buildout on MacOSX. I have following config:
[gdal]
recipe = zc.recipe.cmmi
url = http://download.osgeo.org/gdal/gdal-1.7.2.tar.gz
extra_options =
--with-geos=${geos:location}/bin/geos-config
--with-static-proj4=${proj:location}
--with-jpeg={libjpeg:location}
--with-spatialite=${spatialite-lib:location}
--with-sqlite=${spatialite-lib:location}
I tried many other configurations but all I've got is the following error:
http://pastebin.com/s0WxfnUu
Any clues?
I've managed to resolve the problem - description below.
Just for the record - proper configuration for building GDAL on MacOSX (for example purposes I've cut off additional stuff):
[libiconv]
# ...
[gdal]
recipe = hexagonit.recipe.cmmi
url = http://download.osgeo.org/gdal/gdal-1.7.3.tar.gz
configure-options =
--with-python
--with-jpeg=internal
--with-spatialite=${spatialite:location}
CFLAGS=-I${libiconv:location}/include
LIBS="${libiconv:location}/lib/libiconv.la ${libiconv:location}/lib/libcharset.la"
You need to specify libiconv (in my example I'm building it from source) - it will prevent charset errors.
Also my problem was in the version of jpeglib, so I've definied --with-jpeg=internal so the GDAL will use it's own libs. Depending on the error you can use --with-png=internal, --with-tiff=internal etc.
Good luck!
Buildout is great for a lot of things, but even I tend to hand over some responsibility to the OS.
The whole whopping geo stack is one of those things. Gdal, geos, libproj4, mapnik, I don't know what. Compiling everything from source is just too cumbersome, especially as you have a lot of dependencies.
In your case, it looks like there's a mismatch in some of the libraries that gdal compiles against. Wrong length of arguments.
My tip is to install gdal and friends via your OS (so: windows installer, apt-get, rpm, whatever).