stan-dev / stan-dev/math

[Admin] `licenses/` directory out of date

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Description

Description

The licenses/ directory includes a file called eigen-license.txt which contains the LGPL3 license. Eigen's license has changed to be "primarily" MPL2, see: https://gitlab.com/libeigen/eigen/-/blob/3.4/COPYING.README

The file dependencies.txt in that same folder is also considerably out of date, both for things like supported compilers/versions and it seems to be pre-stanc3 and has some notes on building the now-deleted stanc2 compiler.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with licenses/eigen-license.txt and compare it with Eigen 3.4's COPYING.README, then review licenses/dependencies.txt against current supported compiler versions and the post-stanc2 workflow. Done means both files reflect the current Eigen licensing and dependency/build information, with obsolete stanc2 notes removed.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
documentation
Issue type
Documentation
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
52/100

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