Workaround for failed installation in Windows

[n-riesco]

I think I found the culprit of this problem. In my windows box, all the npm installed module are line up nicely in the folder: "C:\Users<user>\AppData\Roaming\npm\node_modules", including:

• ijavascript
• node-gyp
• zeromq

However, the kernel complains of not finding the zmq.node in the folder: "C:\Users<user>\AppData\Roaming\npm\node_modules\ijavascript\node_modules"

So, I just copy manually the zeromq folder from [...\npm\node_modules] to [...\npm\node_modules\ijavascript\node_modules] and the kernel start working without a hitch in the notebook.

The zeromq folder was actually there, only missing the /Release folder that contains the zmq.node

In my opinion looks like just a matter of missing "/" in the path variable. The ijavascript is not supposed to have its own /node_modules/, isn't it?

As a recap, all the installation I did were: npm install --global --production windows-build-tools --vs2015 npm install -g zeromq@5 npm install -g node-gyp npm install -g ijavascript ijsinstall

Good stuff guys!

Originally posted by @ozbigcat in https://github.com/n-riesco/ijavascript/issues/184#issuecomment-648099028

[n-riesco]

I've opening a new issue to give more visibility to this workaround, and because it's possibly an issue different from #184.

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In my opinion looks like just a matter of missing "/" in the path variable. The ijavascript is not supposed to have its own /node_modules/, isn't it?

It's OK for npm packages to have their own node_folder. This is handled by npm.

Another possible explanation is the version of node-gyp. Your instructions above show zeromq was installed before node-gyp, and ijavascript after. Perhaps the version of node-gyp installed globally is incompatible with ijavascript.

[ozbigcat]

additional info: the installation described above only be done after following the 'normal' installation and failed.

I. e: don't have node-gyp, zeromq@5 nor vs2015 before that. in other word, I am implying that maybe the work around works without having to install node-gyp by itself?

I think it is all boil down to why zeromq's "/Release" folder and its contents was missing in ijavascript's zeromq's node_module....

thanks..

[rpalloni]

Confirm workaround works (Win10). Just for clarification: content in AppData\Roaming\npm\node_modules\zeromq\build has to be copied in AppData\Roaming\npm\node_modules\ijavascript\node_modules\zeromq\build (empty)

[ghost]

Tested on: Windows:

Edition	Windows 10 Pro for Workstations
Version	20H2
Installed on	‎9/‎8/‎2020
OS build	19042.804
Experience	Windows Feature Experience Pack 120.2212.551.0

Environment:

node -v
v15.0.1
npm -v
7.0.3
yarn -v
1.22.5

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Installation process walkthrough:

1. install studio 2019 community
2. add "Desktop development with C++" 2.1. manually select in "individual components" "MSVC v140 - VS 2015 C++ build tools (v14.00)"
3. reboot
4. run as admin powershell
5. execute

npm install --global --production windows-build-tools --vs2015
npm install -g node-gyp
npm install -g zeromq@5
npm install -g ijavascript

6. change policy with:

Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser

7. run

ijsinstall

8. restore policy with

Set-ExecutionPolicy -ExecutionPolicy Undefined -Scope CurrentUser

9. close console.
10. enjoy your new kernel.