Dezyne 2.18.0 released.

December 15, 2023

We are happy to announce Dezyne 2.18 which introduces shared interface state.

Before 2.18.0, for a component to be able to act on the state of a another component behind an interface, it would need to define and maintain a shadow copy of its state.

Now given a port port and a boolean state bool state be referred to as port.state in expressions by the components on either side of the interface. Note that the access of such state is read-only.

See also the Dezyne documentation.

We will evaluate your reports and track them via the Gitlab dezyne-issues project, see our guide to writing helpful bug reports.

What's next?

In the next releases we would like to see:


Looking beyond the next releases and in no particular order:

The Dezyne developers.


git clone git://

Here are the compressed sources and a GPG detached signature[*]:

Here are the SHA1 and SHA256 checksums:

13599d3b4b7a47696848576b51f1abbbe3513ec2  dezyne-2.18.0.tar.gz  
f16b21d1cd9833752421331cba903bb7d33d7544dfcafb868bbbf27d99ef79d1  dezyne-2.18.0.tar.gz

[*] Use a .sig file to verify that the corresponding file (without the .sig suffix) is intact. First, be sure to download both the .sig file and the corresponding tarball. Then, run a command like this:

gpg --verify .sig

If that command fails because you don't have the required public key, then run this command to import it:

gpg --keyserver --recv-keys 1A858392E331EAFDB8C27FFBF3C1A0D9C1D65273

and rerun the gpg --verify command.

Alternatively, Dezyne can be installed using GNU Guix:

guix pull  
guix install dezyne


Changes in 2.18.0 since 2.17.3

For changes in the previous release see Dezyne release 2.17.3.

Join and #deyne on for discussions.

About Dezyne

Dezyne is a programming language and a set of tools to specify, validate, verify, simulate, document, and implement concurrent control software for embedded and cyber-physical systems.

The Dezyne language has formal semantics expressed in mCRL2 developed at the department of Mathematics and Computer Science of the Eindhoven University of Technology (TUE). Dezyne requires that every model is finite, deterministic and free of deadlocks, livelocks, and contract violations. This is achieved by means of the language itself as well as builtin verification through model checking. This allows the construction of complex systems by assembling independently verified components.

Dezyne is free software, it is distributed under the terms of the GNU Affero General Public Licence version 3 or later.

About Verum

Verum, the organization behind the Dezyne language, is committed to continuing to invest in the language for the benefit of all its users. Verum assists its customers and partners in solving the software challenges of today and tomorrow, by offering expert consultancy on the application of the Dezyne language and the development and use of its tools, as well as on Verum's commercial tools like Verum-Dezyne's IDE support based on the LSP (Language Server Protocol), interactive integrated graphics, interactive simulation, (custom) code generation and (custom) runtime library support.