Connecting with Modelix MPS plugin to a model repository through a webserver that has a custom SSL certificate

If you try to connect using the Cloud tool window of Modelix to a model repository that is served through a web server that has a custom SSL certifcate (something that would be typical to a company-internal webserver), then (at least at the moment of this writing), you will get an exception from the Modelix … Read more

MPS Extensions available as plugins on JetBrains marketplace

Let me tell you about something awesome that I have been working on with Mike Vlassiev from the JetBrains people (or rather, they have been working on it and I have done testing and provided feedback): the MPS Extensions ( are now automatically made available on the JetBrains marketplace on every new MPS and MPS … Read more

Plaintextgen tutorial

The com.dslfoundry.plaintextgen extension ( for JetBrains MPS ( enables a language designer to write model-to-text generation templates in pretty much the same way one writes model-to-model transformations in MPS. This is very useful for many reasons, the most prominent two of which are in my opinion: you don’t have or don’t want to build a … Read more

How to add a sandbox to an MPS language that doesn’t have one

Often times, when creating a new language, I skip the “Create Sandbox Solution” checkbox. Recently, I have learned that the sandboxes are actually not just solutions with the name sandbox. Because of their property of actually residing in the language folder itself, many MPS Extensions are actually using sandboxes to package example models with a … Read more

First prototype of plaintextflow released

The mps-plaintextgen plugin has been upgraded with new functionality for fine-grained control of whitespaces. Such functionality is very useful for languages that are fiddly with whitespace such as reStructuredText or where you just want to have very fine control (such as in JSON or in some instances Python). Plaintextflow is part of the plaintextgen plugin, … Read more