# How to open myst/markdown on retrolab with jupytext?

**URL:** <https://discourse.jupyter.org/t/how-to-open-myst-markdown-on-retrolab-with-jupytext/12763>\
**Category:** extensions\
**Tags:** help-wanted\
**Created:** [January 26, 2022, 3:46pm UTC](https://discourse.jupyter.org/t/how-to-open-myst-markdown-on-retrolab-with-jupytext/12763 "2022-01-26T15:46:30Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![koalp](https://avatars.discourse-cdn.com/v4/letter/k/d9b06d/32.png) [@koalp](https://discourse.jupyter.org/u/koalp)\
**Post date:** [January 26, 2022, 3:46pm UTC](https://discourse.jupyter.org/t/how-to-open-myst-markdown-on-retrolab-with-jupytext/12763/1 "2022-01-26T15:46:30Z")

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Hello,

I want to open `.md` notebooks (converted with jupytext) in retrolab.

It works with classical notebook and jupyterlab but not with retrolab. I followed [instructions on jupytext.readtedocs.io](https://jupytext.readthedocs.io/en/latest/#install) to configure jupyterlab and I tried with both jupytext markdown and myst.

Is it supposed to work ? If not, does anyone know why it doesn’t work ?

* * *

My library versions are :

- jupyterlab: 3.2.8
- jupytext: 1.13.6
- retrolab: 0.3.16

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**Author:** ![bollwyvl](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.jupyter.org/bollwyvl/32/904_2.png) [@bollwyvl](https://discourse.jupyter.org/u/bollwyvl)\
**Post date:** [January 26, 2022, 4:02pm UTC](https://discourse.jupyter.org/t/how-to-open-myst-markdown-on-retrolab-with-jupytext/12763/2 "2022-01-26T16:02:15Z")

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It probably won’t work today. Have a look at this issue:

- [Story for generic document factory · Issue #290 · jupyterlab/retrolab · GitHub](https://github.com/jupyterlab/retrolab/issues/290)

Most likely, the `/editor/` url will grow a new component, e.g. `/editor/foo.md?factory=Notebook` or something. or `/editor/Notebook:foo.md`