mirror of
https://github.com/tiennm99/serena.git
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Dominik Jain
6707cd9b7e
The repository is licensed per component. SolidLSP (src/solidlsp,
test/solidlsp, test/resources) remains MIT-licensed and independently
reusable; the Serena application (src/serena, src/interprompt, scripts,
test/serena, docs) is licensed under GPL-3.0-or-later starting with the v2
licensing transition. The change is not retroactive: all releases and
commits up to v1.7.0 / 74c38a65 (tag mit-final) remain available under MIT.
Since MIT is GPL-compatible, a distribution combining both (such as the
serena-agent package) is as a whole subject to GPL-3.0-or-later, while the
SolidLSP files themselves stay MIT and can be extracted and used separately
under MIT terms. The distribution metadata therefore declares
GPL-3.0-or-later, with both license texts shipped alongside it.
Serena originally began under the GPL (v2) and was switched to MIT in
May 2025 following community requests. We consider that change a mistake;
the substantial changes in v2 make this the appropriate time to revert it.
We want the best version of Serena to remain free.
Changes:
* LICENSE is now the licensing overview; canonical license texts live in
LICENSES/ (MIT.txt is the previous LICENSE verbatim, GPL-3.0-or-later.txt
is the unmodified FSF text)
* pyproject.toml declares the PEP 639 license expression
"GPL-3.0-or-later" and bundles LICENSE and LICENSES/* as license files;
the deprecated MIT classifier is dropped and flake.nix declares gpl3Plus;
README has per-component license badges and a License section
* SPDX-License-Identifier headers in all Python sources under src/ and
scripts/, added by the new idempotent scripts/add_spdx_headers.py, which
gen_prompt_factory.py also uses to keep the header on the generated
module; existing third-party notices are preserved
* CLA.md: Contributor License Agreement (contributor retains copyright;
grants a perpetual, irrevocable license including relicensing under any
terms, incl. proprietary/commercial; patent grant; authority
representations), to be enforced repository-wide via cla-assistant.io
* CONTRIBUTING.md, PR template and a new docs page explain the licensing
boundary and the CLA workflow
85 lines
3.4 KiB
Plaintext
85 lines
3.4 KiB
Plaintext
Serena Licensing Overview
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=========================
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This repository is licensed per component: SolidLSP under the MIT License and
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the Serena application under GPL-3.0-or-later.
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Because MIT is compatible with the GPL, any distribution that combines both -
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such as the `serena-agent` package - is as a whole subject to the terms of
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GPL-3.0-or-later. This does not change the license of the SolidLSP files
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themselves: they remain MIT-licensed and may be obtained, extracted and used
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separately under MIT terms.
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The full license texts are in the LICENSES/ directory and are not modified in
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any way:
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LICENSES/MIT.txt The MIT License
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LICENSES/GPL-3.0-or-later.txt The GNU General Public License, version 3
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Components
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----------
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SolidLSP (src/solidlsp/, test/solidlsp/, test/resources/)
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License: MIT (SPDX: MIT)
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Copyright (c) 2025-2026 Jain & Panchenko IT-Berater Partnerschaft
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(Oraios AI) and contributors
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SolidLSP is the language-server client library that provides the basis
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for Serena's free code-intelligence backend. It is permissive, reusable
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infrastructure and remains MIT-licensed so that it can be used
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independently of Serena under MIT terms. This is unaffected by the
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licensing of the Serena application.
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Some files in src/solidlsp/lsp_protocol_handler/ are derived from
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OLSP (https://github.com/predragnikolic/OLSP), MIT-licensed; the
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original notices are retained in those files.
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Serena application (src/serena/, src/interprompt/, scripts/, test/serena/,
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docs/ and everything else in this repository that is not listed above)
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License: GPL-3.0-or-later (SPDX: GPL-3.0-or-later)
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Copyright (c) 2025-2026 Jain & Panchenko IT-Berater Partnerschaft
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(Oraios AI) and contributors
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Serena is the application built on top of SolidLSP. Starting with the
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v2 licensing transition (see "Historical cutoff" below), Serena
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application code is licensed under the GNU General Public License,
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version 3 or (at your option) any later version.
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Source files carry an "SPDX-License-Identifier" line indicating which of the
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two licenses applies to that file.
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Historical cutoff
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-----------------
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The license change is NOT retroactive.
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* Serena originally began under the GNU General Public License (version 2).
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It was changed to the MIT License on 2025-05-01 (commit 3e9384f5).
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* All Serena releases and commits from that point up to and including the
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cutoff below were released under the MIT License and remain available
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under the MIT License.
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* Serena v2 and all later application code are licensed under
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GPL-3.0-or-later.
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Last MIT-licensed release: v1.7.0
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Last MIT-licensed commit: 74c38a65f03fc0764d7ee4b3016ef6a07572ed64
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Marker tag: mit-final
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Contributions that entered the Serena application under the MIT License before
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the cutoff remain incorporated in the GPL-licensed application; the MIT
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copyright and permission notice (LICENSES/MIT.txt) continues to apply to that
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historical code as required by its terms.
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Contributions
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-------------
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Contributions to this repository require acceptance of the Contributor License
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Agreement in CLA.md. See CONTRIBUTING.md for details.
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Why GPL?
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--------
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We want the best version of Serena to remain free. The GPL ensures that anyone
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who redistributes a derivative version of Serena must preserve the same
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software freedoms for its users.
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