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I am using colab for qiskit and even after installing pylatexenc using pip this still comes as an error, I also used !pip.Here's the full pic
I think that you probably need to restart the kernel in jupyter and rerun the notebook.
The way optional dependency detection looks like it is done there is that when the module is first imported it checks if pylatexenc is installed or not. If it's not installed it sets a flag to say it's not present. Then when you go to use a function in the module if that flag is set it raises that import error. Without restarting the kernel that flag will still be set so it doesn't check again if pylatexenc is installed again on the 2nd call.
Try installing pylatexenc
using the following command.
pip install pylatexenc
Related
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I am trying to install a list of packages using ansible apt module. The list includes package name and version to be installed. Some packages are not updated as the given version is not found in cache. I would like to install the failed packages with the latest version available for them. Can someone please help me with the playboook code ?
I tried listing out all the failed packages manually and created another task to install them to the latest version. This worked fine for some VM's but it is not sustainable for the long run.
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Following step 4 in Get Magento of this guide, I ran into the following error:
Your requirements could not be resolved to an installable set of packages.
Followed by a list of missing extensions (such as gd and dom).
How can I install all of those extensions?
Composer is not a package manager, it is a dependency manager, so it will not install native php packages. You need to install required packages according to your version of PHP and OS. Instructions for Centos are here and that for Ubuntu is here
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When the rails app created and installing ruby gems, I wanted to know how multiple gems integrated and adding custom tables to that
Ex : Social Stream gem, rmagick gem and those database tables to be stored
Actually you need to go trough the gem's official documentation and check how it works internally. You can follow the git hub repos and go through the read me doc and check how it works. Check out its libraries.
I think if I understood your question then this is the only thing you can do.
Do you mean how to add gems in your app?
Here is how you do it:
Go to your gemfile and add:
gem 'social_stream'
gem 'rmagick'
You also need to install imagemagick on your system. rmagick requires imagemagick
You can install via yum, apt-get or whatever package manager your OS uses.
One note is that installing imagemagick on OSX is a little tricky. I recommend using homebrew.
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How do you package a ruby app so all the dependencies are already packaged in the app and does not require the user to be messing about with bundler or rvm.
Use "require" for all the dependencies you need in an ordered manner.
However the require only works if the "required" package is installed on the machine. from what I know there is no automated tool .. and how do you know even "ruby" is installed (non-MacOS).
If you don't want user to "mess" with installing anything -- then you have to write a piece of code that checks the presence of dependencies and installs them if needed. .. best is to write the install script in install script/program with bash etc. or in ruby inline with something with try/end syntax.
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I am new to kernel development. Currently I am running Ubuntu 13.04. My current kernel is 3.8.0-23-generic.
My question is, do I need to install exact 3.8.0-23-generic source code to do development and see the results?
In Ubuntu, to obtain the source for the currently running kernel you can use the command below:
apt-get source linux-image-$(uname -r)
See here for detail.
There are detailed instructions for building a kernel in Ubuntu here:
https://help.ubuntu.com/community/Kernel/Compile
There is a concept called kernel version magic which ensures the correct version of module is inserted in to kernel always. so you need to install exact 3.8.0-23-generic source code for inserting your modules.
http://www.tldp.org/LDP/lkmpg/2.6/html/x380.html for some guidance about version magic.
Suppose you want to do development only in 2.6.X, then simply download that 2.6.x from kernel.org and follow the link http://www.cyberciti.biz/tips/compiling-linux-kernel-26.html