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yap-6.3/packages/python/yap_kernel/README.md

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#YAP Kernel for Jupyter
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This package provides the IPython kernel for Jupyter.
## Installation from source
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This should install as part of the YAP system
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## Jupyter Lab
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CodeMirror does not support highlighting for Prolog. YAP includes a
port based on one that is used in SWISH. To use this mode from
jupyter lab, do as follows:
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1. run `jupyter lab build` (you may need root permission). Search the
output for a aline such as:
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~~~~
[LabBuildApp] > node /usr/local/lib/python3.7/site-packages/jupyterlab/staging/yarn.js install
~~~~
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2, Add the following 3 lines below to the webpack.config.js file:
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~~~~~~~
fs.ensureDirSync('node_modules/codemirror/mode/prolog');
fs.copySync(path.join(path.resolve(jlab.buildDir),'../../../kernels/yap_kernel/prolog.js'), 'node_modules/codemirror/mode/prolog/prolog.js');
fs.copySync(path.join(path.resolve(jlab.buildDir),'../../../kernels/yap_kernel/meta.js'), 'node_modules/codemirror/mode/meta.js');
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..~~~~~~~~
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These lines should copy YAP's prolog.js and a new version of the mode directory, meta.js. whenever you rebuild jlab, eg, if you add a new plugin.
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Next, please check the lines in context.
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be at around line 24:
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~~~~~~~
output: jlab.outputDir
});
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fs.ensureDirSync('node_modules/codemirror/mode/prolog');
fs.copySync(path.join(path.resolve(jlab.buildDir),'../../../kernels/yap_kernel/prolog.js'), 'node_modules/codemirror/mode/prolog/prolog.js');
fs.copySync(path.join(path.resolve(jlab.buildDir),'../../../kernels/yap_kernel/meta.js'), 'node_modules/codemirror/mode/meta.js');
// Create the entry point file.
var source = fs.readFileSync('index.js').toString();
~~~~~~~~
3: Rerun "jupyter lab build"
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