Is the Haskell Logo "Open Source"?

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Hi all! :wave:

I’m the host of the Type Theory Forall podcast and website (https://typetheoryforall.com), where I explore topics in type theory, PL, and formal methods through longform interviews and accessible content.

I recently started a small merch shop to help support the project and have begun selling mugs featuring the Rocq logo (with their blessing). I’d love to do something similar with the Haskell logo—just a simple mug design with the logo on it.

Before moving forward, I wanted to ask: is the Haskell logo considered open source, or otherwise freely reusable for something like this? If there are any guidelines or restrictions I should follow, I’d be happy to comply.

Thanks in advance!

—Pedro

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This may assist:

including its link to:

EDIT1: I also located:

EDIT2: As an aside, for history lovers, this is the origin of the logo:

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Hello Pedro!

The Haskell Foundation is actually working out the intricacies of this as we speak!

In short, the question of ownership is not yet fully established, but the goal is for the Foundation to control the copyright and the trademark.

What do we intend to do with this control? Well, mostly prevent misuse/deception.

Uses like what you propose are fine. We can switch to email if you’d like to get it in more ‘official’ writing.

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Sounds good José! Thanks :slight_smile: