In September 2021, Joshua Strobl, then Solus’s experience lead, proposed exploring an alternative software ecosystem built around Enlightenment Foundation Libraries (EFL), amid concerns he expressed about GTK4 and GNOME’s direction. It was a proposal, not proof that Solus had decided to leave GTK or had adopted an EFL-based desktop. Strobl’s page now warns that statements about plans for or by Solus are outdated, and a January 2022 Solus forum post said the team would wait before committing to EFL.
What did the 2021 Solus proposal say?
In his September 14, 2021 post, “Building an Alternative Ecosystem”, Strobl raised the question: “Do we still build Budgie and Solus software with GTK4 and beyond?” He argued for considering an alternative ecosystem and said he would pursue moving Koto, a Solus application, from GTK4 to EFL.
His stated reasons were dissatisfaction with GTK4’s state and concerns about GNOME’s plans for theming and the future direction of GTK. Those were Strobl’s views in a historical proposal, not an independent finding that GTK4 or GNOME was unsuitable for Solus.
Was Solus’s move to EFL completed?
The available evidence describes investigation, not a completed migration. In a September 6, 2021 Koto development diary, Strobl said GTK4-based Koto was officially on hold. He listed experimentation with EFL+C and investigation of Rust bindings as work he planned to pursue to help inform Solus’s next steps. That does not establish that Koto was migrated or that Solus shipped an EFL desktop.
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In a January 17, 2022 Solus forum roadmap discussion, the team expressed optimism about EFL but said it would wait before committing. That is a later indication of interest, not confirmation of adoption.
What does the proposal mean for Solus today?
Strobl’s original page now carries an explicit warning: “Statements asserting any plans for or by Solus should be considered outdated.” The proposal should therefore be read as a record of his 2021 position, not as Solus’s current roadmap.
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It is also important not to treat Solus, Budgie, and the former Solus team as one continuing decision-maker. The forum discussion records Strobl’s departure from Solus and Budgie’s separation. The cited material does not establish a current Solus commitment to replace GTK with EFL.
What are Enlightenment and EFL?
Enlightenment and EFL are related but not interchangeable names. The Enlightenment Project’s overview describes Enlightenment as a desktop shell: software for tasks such as launching applications, managing windows, and system operations. EFL is the broader library ecosystem associated with the project. Enlightenment began as an X11 window manager in the 1990s and later grew to include EFL and applications.
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The project’s Wayland page describes EFL applications running as Wayland clients and work toward a standalone Wayland compositor. This is upstream project context; it does not show that Solus adopted EFL or distributed an EFL-based desktop.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What can be said about EFL’s versions and Solus use?
The Enlightenment Project’s download page lists EFL 1.28.1 and Enlightenment 0.27.1 as its latest source releases on the page checked for this article. Those are upstream page listings, not evidence of the versions Solus used. The cited sources do not establish a Solus EFL release or a current toolkit choice for Solus, so there is no sound basis here for comparing live Solus GTK and EFL options.
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