pip3 install jupyterlab==0.35.6 --user ... [julius@localhost ~]$ python3 -m jupyter labextension install @jupyterlab/hub-extension Node v10.15.3 > /usr/bin/npm pack @jupyterlab/hub-extension npm notice npm notice 📦 @jupyterlab/hub-extension@1.0.0-alpha.6 npm notice === Tarball Contents === npm notice 945B package.json npm notice 1.5kB LICENSE npm notice 1.5kB README.md npm notice 361B lib/index.d.ts npm notice 2.6kB lib/index.js npm notice === Tarball Details === npm notice name: @jupyterlab/hub-extension npm notice version: 1.0.0-alpha.6 npm notice filename: jupyterlab-hub-extension-1.0.0-alpha.6.tgz npm notice package size: 3.0 kB npm notice unpacked size: 6.9 kB npm notice shasum: 60042197de156adb2d79a527a46e2bcd28fb78ad npm notice integrity: sha512-wVwClN6K0kHRt[...]dt/nErABVpBVA== npm notice total files: 5 npm notice jupyterlab-hub-extension-1.0.0-alpha.6.tgz Incompatible extension: "@jupyterlab/hub-extension@1.0.0-alpha.6" is not compatible with the current JupyterLab Conflicting Dependencies: JupyterLab Extension Package >=0.19.1 <0.20.0 >=1.0.0-alpha.6 <2.0.0@jupyterlab/application >=0.19.1 <0.20.0 >=1.0.0-alpha.6 <2.0.0@jupyterlab/apputils Found compatible version: 0.12.0 > /usr/bin/npm pack @jupyterlab/hub-extension@0.12.0 npm notice npm notice 📦 @jupyterlab/hub-extension@0.12.0 npm notice === Tarball Contents === npm notice 908B package.json npm notice 1.5kB LICENSE npm notice 1.5kB README.md npm notice 351B lib/index.d.ts npm notice 2.6kB lib/index.js npm notice === Tarball Details === npm notice name: @jupyterlab/hub-extension npm notice version: 0.12.0 npm notice filename: jupyterlab-hub-extension-0.12.0.tgz npm notice package size: 3.0 kB npm notice unpacked size: 6.9 kB npm notice shasum: 2928622d6b5dfd67b859948f08bf0cf8c55f5717 npm notice integrity: sha512-3iR402o7GNcyn[...]jCq3H+ROnFhkg== npm notice total files: 5 npm notice jupyterlab-hub-extension-0.12.0.tgz Node v10.15.3 "@jupyter-widgets/jupyterlab-manager@0.40.0" is not compatible with the current JupyterLab Conflicting Dependencies: JupyterLab Extension Package >=0.19.1 <0.20.0 1.0.0-alpha.6 @jupyterlab/application >=0.19.2 <0.20.0 1.0.0-alpha.7 @jupyterlab/notebook >=0.19.1 <0.20.0 1.0.0-alpha.6 @jupyterlab/rendermime > node /home/julius/.local/lib/python3.7/site-packages/jupyterlab/staging/yarn.js install yarn install v1.9.4 info No lockfile found. [1/5] Validating package.json... [2/5] Resolving packages... warning @jupyterlab/application > @jupyterlab/apputils > react > fbjs > core-js@1.2.7: core-js@<2.6.5 is no longer maintained. Please, upgrade to core-js@3 or at least to actual version of core-js@2. ⠐ isexe@^2.0.0(node:27911) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead. warning @jupyterlab/plotly-extension > plotly.js > mapbox-gl > @mapbox/gl-matrix@0.0.1: This warning @jupyterlab/plotly-extension > plotly.js > regl-splom > left-pad@1.3.0: use String.prototype.padStart() warning @jupyterlab/plotly-extension > plotly.js > ndarray-fill > cwise > static-module > through2 > xtend > object-keys@0.4.0: warning css-loader > cssnano > autoprefixer > browserslist@1.7.7: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools. warning css-loader > cssnano > postcss-merge-rules > browserslist@1.7.7: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools. warning css-loader > cssnano > postcss-merge-rules > caniuse-api > browserslist@1.7.7: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools. warning css-loader > cssnano > postcss-merge-rules > postcss-selector-parser > flatten@1.0.2: I wrote this module a very long time ago; you should use something else. [3/5] Fetching packages... info fsevents@1.2.9: The platform "linux" is incompatible with this module. info "fsevents@1.2.9" is an optional dependency and failed compatibility check. Excluding it from installation. [4/5] Linking dependencies... warning "@jupyterlab/vdom-extension > @nteract/transform-vdom@1.1.1" has incorrect peer dependency "react@^15.6.1". warning "@jupyterlab/vega4-extension > vega-embed > vega-themes@2.3.0" has unmet peer dependency "vega@*". [5/5] Building fresh packages... success Saved lockfile. Done in 57.79s. > node /home/julius/.local/lib/python3.7/site-packages/jupyterlab/staging/yarn.js run build yarn run v1.9.4 $ webpack Hash: bc3bec95a3fa44775a1a Version: webpack 4.12.2 Time: 16156ms Built at: 15.05.2019 13:31:13 Asset Size Chunks Chunk Names vendors~vega.7ff0a1c028eb2aaa6f9d.js 2.97 MiB vendors~vega [emitted] vendors~vega 674f50d287a8c48dc19ba404d20fe713.eot 162 KiB [emitted] 912ec66d7572ff821749319396470bde.svg 434 KiB [emitted] fee66e712a8a08eef5805a46892932ad.woff 95.7 KiB [emitted] b06871f281fee6b241d60582ae9369b9.ttf 162 KiB [emitted] main.bbdfd025cf625ab76fa9.js 54.3 KiB main [emitted] main 0.cc98107762fcc28532b3.js 4.5 KiB 0 [emitted] vega.91b98e783d16fd1b9e23.js 519 bytes vega [emitted] vega vendors~main.cdf8368084c2da69d9bb.js 14.4 MiB vendors~main [emitted] vendors~main af7ae505a9eed503f8b8e6982036873e.woff2 75.4 KiB [emitted] 1.055322dcf6c2bb19185f.js 888 KiB 1 [emitted] main.bbdfd025cf625ab76fa9.js.map 63.2 KiB main [emitted] main 0.cc98107762fcc28532b3.js.map 5.73 KiB 0 [emitted] vega.91b98e783d16fd1b9e23.js.map 251 bytes vega [emitted] vega vendors~main.cdf8368084c2da69d9bb.js.map 16.9 MiB vendors~main [emitted] vendors~main vendors~vega.7ff0a1c028eb2aaa6f9d.js.map 2.31 MiB vendors~vega [emitted] vendors~vega 1.055322dcf6c2bb19185f.js.map 1.04 MiB 1 [emitted] index.html 1.54 KiB [emitted] Entrypoint main = vendors~main.cdf8368084c2da69d9bb.js vendors~main.cdf8368084c2da69d9bb.js.map main.bbdfd025cf625ab76fa9.js main.bbdfd025cf625ab76fa9.js.map [0] multi whatwg-fetch ./build/index.out.js 40 bytes {main} [built] [1] vertx (ignored) 15 bytes {main} [optional] [built] [2] util (ignored) 15 bytes {main} [built] [4] buffer (ignored) 15 bytes {main} [optional] [built] [5] crypto (ignored) 15 bytes {main} [optional] [built] [6] readable-stream (ignored) 15 bytes {main} [built] [8] chalk (ignored) 15 bytes {main} [built] [9] fs (ignored) 15 bytes {main} [built] [10] node-fetch (ignored) 15 bytes {vega} [built] [11] fs (ignored) 15 bytes {vega} [built] [ANye] ./build/index.out.js 35.9 KiB {main} [built] [RnhZ] ./node_modules/moment/locale sync ^\.\/.*$ 2.88 KiB {main} [optional] [built] [YuTi] (webpack)/buildin/module.js 497 bytes {vendors~main} [built] [eTbV] ./node_modules/codemirror/mode sync ^\.\/.*\.js$ 2.78 KiB {0} [built] [yLpj] (webpack)/buildin/global.js 489 bytes {vendors~main} [built] + 2443 hidden modules WARNING in d3-array Multiple versions of d3-array found: 1.2.4 ./~/d3-scale/~/d3-array from ./~/d3-scale/~/d3-array/src/index.js 2.0.3 ./~/d3-array from ./~/d3-array/src/index.js WARNING in vega-lite Multiple versions of vega-lite found: 2.5.1 ./~/vega-lite/build/src from ./~/vega-lite/build/src/compile/selection/selection.js 2.6.0 ./~/vega-lite/build from ./~/vega-lite/build/src/index.js Check how you can resolve duplicate packages: https://github.com/darrenscerri/duplicate-package-checker-webpack-plugin#resolving-duplicate-packages-in-your-bundle Child html-webpack-plugin for "index.html": 1 asset Entrypoint undefined = index.html [KTNU] ./node_modules/html-loader!./templates/partial.html 567 bytes {0} [built] [YuTi] (webpack)/buildin/module.js 497 bytes {0} [built] [aS2v] ./node_modules/html-webpack-plugin/lib/loader.js!./templates/template.html 1.22 KiB {0} [built] [yLpj] (webpack)/buildin/global.js 489 bytes {0} [built] + 1 hidden module Done in 17.80s.