Is there a source build available for the libxslt development package? - lxml

I am trying to install lxml on a ReMarkable tablet, and while the opkg entware repo has libxslt, it does not contain a package for libxslt-dev. I was wondering if anyone has links to a source build or even better an ipkg file. I've been scouring the internet for the better part of 2 hours, but I'm not even sure I'm looking in the right places. Any help would be very appreciated, thanks!

I bumped into the same issue and circumvented it by installing opkg install python-lxml.
This avoids compiling the module and thus doesn't need libxslt's header files.

Related

Given an npm package, how do I know whether it will work in browser?

I've recently installed some npm package (recommended Kubernetes client) for my react app.
After writing code that uses the package and deploying the code for testing I got some weird errors about missing functions or packages. Then I've read the documentation and realized that the package was Node-only.
Is there any way to check that the npm package works in browser before writing code that uses the package?
Python packages specify compatible python versions. Do npm packages have something like this whether they indicate support for particular Node versions and the browsers?
Some packages/libraries contain .browserlistrc file which I've found to be a starting point to find out the browsers and platforms the devs intend to support or have their code compile for. While it may not always be true and the package might just be able to support a browser that isn't mentioned, it's a good starting point. It surely helps to find out if IE (the bane of front-end dev) is supported or not.
Then again many packages don't necessarily include a .browserlistrc. You can then check the package.json for a "browserslist" field.
If neither are found, you can always clone the repo and add your own .browserlistrc in the root with queries that will let you know if the package supports your intended browser or platform - little more work but yeah it can help. Not full proof but a decent enough way to find out.
Though the best answer is really to just ask the maintainers.

Is it possible to "stuff" one ROS package into another ROS package?

I am working on a ROS package to be deployed on our lab robots. There is a feature in my package requires a third party ROS package. I don't think this package is released yet, at least I couldn't find it at ROS wiki document site. The dependent package is called ros_msg_parser for subscribing topics without knowing their msg type beforehand. Here is the link to the repo. (https://github.com/facontidavide/ros_msg_parser)
I need to mention that we use ubuntu 16.04 in all our devices. And we program with ROS, and C++.
My intention is to deploy my own ROS package to the robot without worrying about if the ros_msg_parser package is installed on the device or not.
I know a couple of ways to do it:
Use a .so library file. (We don't think this approach is the ideal way to proceed for us, since the .so library is going to be a black box for other colleagues in lab in future, and no way to know its version and so no.)
Release ros_msg_parser ROS repo and use it as a ros eco-environment program, such as std_msgs.
And at last, (not we want) we could build/install this ros_msg_parser package on all our devices.
I have also researched on externalpackage_add, to build/install ros_msg_parser as a third party library. Then I realized that I am using a ros package as my dependency, not really the standard way of build && cmake && install. Correct me if I am wrong.
I have desired package working alright now, by catkin_make the ros_msg_parser package in my working space together.
I am just wondering if any one can help me with things like if there is any approach I can do or any where I can research on my own to fulfill my goal.
Thanks in advance.
Furtunately, I have got some help from team to solve this problem. It is rather simpler than I imagined.
Here are the steps that we took to implementation:
git clone the ros pacakge source and only copy the source files to a folder called your_third_party_folder/ parallel to your_main_work_space/src folder. Remember to remove your git clone histories etc, you will only need the source files, otherwise your main work space won't work well with your own repo. Due to a dirty repo prompt, you will not be able to push our third_party project to your repo. Maybe there are another ways to solve this, but it is just simpler to copy the source files to a folder where want.
work on your two CMakeLists.txt files, make sure to inlcude, link and target some libraries to pass catkin_make
and don't forget to add_subdirectory(YOUR_THIRD_PARTY_PACKAGE) in your main workspace CMakeLists.txt file.
Note it took me quiet some time to fix the compiling process, but finally the third_party project is installed with no .so file and no local library installation.

Where can I download mono-4.6.1.5?

For a particular script, I need to download the package mono-4.6.1.5 for Ubuntu 20.04 LTS.
However, I can not do it from the official mono web site.
Anyone knows where I could get the .tar.gz package since the one I have is corrupted?
Thank you in advance.
Best regards.
It is always recommended to run latest maintained and compatible version of packages complying with the operating system, excluding specific cases such as experimental purposes and etc.
But if you still need this specified version, you can find the "tar.bz2" format file on this page. There are certain ways to install a tar.bz2 file on Ubuntu, but if you need the tar.gz file, you can convert it by a similar way explained here.
P.S: I'm aware that this package is from a Fedora repo, but I have successfully tried and installed Fedora packages on my Ubuntu 18.04 before. I assume this might also work for you.
Ho, btw, I found another link in my archives: mono project

Does installing a root package automatically install a scoped library?

After I am installing a root library, such as npm install aws-amplify, sometimes it seems that I need to install its sub library such as npm install #aws-amplify/cli. Why did not npm install aws-amplify install every sub library within it?
What's the npm packaging and installing rule here? can someone help me clearing understand that?
You are mixing up 2 different syntaxes. The #namespace/package is relatively new. It used to be just package, and some packages still use this. In the old way package tend to name themselves 'namespace-package' as some sort ofworkaround.
But that is not your question. Your question is 'why do they even do this?'.
Why wouldn't you just download all the npm package out there? Then you have and can use everything, right? As you can imagine this doesn't make much sense, you will only want to download and use what you need. Think of this quote from Joe Armstrong:
You wanted a banana but what you got was a gorilla holding the banana and the entire jungle.
The quote is a entirely out of context since it is more about not using classes, but it still kind of applies to this. At lot of packages will offer you a core package and the option to add sub-packages based on your need. Like in your example, someone might not need #aws-amplify/cli, this way he doesn't have to download it.

wxWindows 2.9 binary for windows

After an upgrade to the new Haskell Platform, my existing wxHaskell programs are broken.
They all seem to now require wxWidgets 2.9, for which I can't find any binary versions.
wxPack has 2.8, and beyond that one has to get a compiler and build it locally from what I see.
There are tutorials on this from various sources, each a few pages long, with various advice on setup, changing configurations, etc. Install wxConfig, install minGW compilers, setup configurations, rebuild, etc.
Is there any source of a simple binary install? I'd hope for some simple apt-get or cabal like tool, Haskell library tools (on Windows?) seem less integrated than others that I'm familiar with.
(Update) I did install and compile wxWidgets locally, and still cannot get the wxHaskell components to install. I'm sure that all of this just requires some fairly simple details, but again after some time already, hope not to have to spend a lot more time on this, and wish it was more automated!
Configuring wxc-0.90.0.3...
Configuring wxc to build against wxWidgets 2.9
setup.exe: Missing dependencies on foreign libraries:
* Missing C libraries: wxmsw29ud_all, wxtiffd, wxjpegd, wxpngd, wxzlibd,
wxregexud, wxexpatd, wxregexud
This problem can usually be solved by installing the system packages that
provide these libraries (you may need the "-dev" versions). If the libraries
are already installed but in a non-standard location then you can use the
flags --extra-include-dirs= and --extra-lib-dirs= to specify where they are.
cabal: Error: some packages failed to install:
wx-0.90.0.1 depends on wxc-0.90.0.3 which failed to install.
wxc-0.90.0.3 failed during the configure step. The exception was: ExitFailure 1
wxcore-0.90.0.1 depends on wxc-0.90.0.3 which failed to install.
Yes, you can. CodeLite (C++ IDE I use) was recently upgraded to use wx29.
Since there are no binaries yet on repo, Dave set up some. Find all instruction in CodeLite's wiki below
wxWidgets 2.9 Packages and Repositories
If you are using windows Just go to download page for Codelite and download codelite with wxWidgets. Install it, copy the installed wxWidgets directory wherever it is needed!
Also it seems like there are official binaries. I have never tested download anything there so try yourself. The link is this one
Feel free to ask any question