Fix documentation and workflows

Author: mcbarton

.github/workflows/main.yml

@@ -254,7 +254,7 @@ jobs:
         run: |
           export BUILD_PREFIX=$MAMBA_ROOT_PREFIX/envs/xeus-cpp-wasm-build
           set -e
-          micromamba create -n xeus-lite-host jupyterlite-core
+          micromamba create -n xeus-lite-host jupyterlite-core=0.6
           micromamba activate xeus-lite-host
           cd build/test
           # Fresh install browsers, and run Emscripten tests in them

CONTRIBUTING.md

@@ -147,7 +147,7 @@ To do this on Ubuntu x86 execute the following
 
 To build Jupyter Lite with this kernel without creating a website you can execute the following
 ```bash
-micromamba create -n xeus-lite-host jupyterlite-core jupyter_server -c conda-forge
+micromamba create -n xeus-lite-host jupyterlite-core=0.6 jupyter_server -c conda-forge
 micromamba activate xeus-lite-host
 python -m pip install jupyterlite-xeus
 jupyter lite build --XeusAddon.prefix=$PREFIX

README.md

@@ -149,7 +149,7 @@ To do this on Ubuntu x86 execute the following
 
 To build Jupyter Lite with this kernel without creating a website you can execute the following
 ```bash
-micromamba create -n xeus-lite-host jupyterlite-core jupyter_server -c conda-forge
+micromamba create -n xeus-lite-host jupyterlite-core=0.6 jupyter_server -c conda-forge
 micromamba activate xeus-lite-host
 python -m pip install jupyterlite-xeus
 jupyter lite build --XeusAddon.prefix=$PREFIX

docs/source/InstallationAndUsage.rst

@@ -130,7 +130,7 @@ To build Jupyter Lite with this kernel without creating a website you can execut
 
 .. code-block:: bash
 
-    micromamba create -n xeus-lite-host jupyterlite-core jupyter_server -c conda-forge
+    micromamba create -n xeus-lite-host jupyterlite-core=0.6 jupyter_server -c conda-forge
     micromamba activate xeus-lite-host
     python -m pip install jupyterlite-xeus
     jupyter lite build --XeusAddon.prefix=$PREFIX