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GeezerVison is showing github.com — For Eigen 5.0.* switch to Map<SparseMatrix> by eddelbuettel · Pull Request #2 · mgoplerud/FactorHet

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@eddelbuettel

@eddelbuettel eddelbuettel commented Sep 27, 2026

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Eigen 5.0.0, which we are trying to bring to CRAN in an updated RcppEigen, did away with Eigen::MappedSparseMatrix. (Also note that they changed the versioning scheme so Eigen 5.0.0 corresponds to 3.5.0 under the old scheme.) See RcppEigen issue 151 for all the changes related to this upgrade.

For MappedSparseMatrix, a change to Map works. No other changes are made in the PR.

So if you could apply this PR and get the update to CRAN before we update, a new RcppEigen would not break your package. If you don't update it we would get breakage 😞 but this PR overcomes this. We have been at this update for a long time as there were other issues in affected packages so the upload is not really imminent -- but getting closer. If you can get this to CRAN over the next few weeks we would appreciate it. 'Some time' in the near future will work, you can see at RcppEigen issue 151 how the other changes come in.

Thanks!

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@eddelbuettel
For Eigen 5.0.* switch to Map<SparseMatrix>
84e2d21
@eddelbuettel eddelbuettel mentioned this pull request Sep 27, 2026
Transition to Eigen 5.0.* RcppCore/RcppEigen#151
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@eddelbuettel

eddelbuettel commented Oct 31, 2026

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The plan is to ship the updated RcppEigen to CRAN in mid-to-late November. If your package is up-to-date at CRAN by then, no worries. If it is not, we can expect the CRAN maintainers to reach out and place some firmer deadlines on your package is it will likely break unless updated with this PR (or equivalent changes).

If there is anything I can do to assist you in making the update, please do not hesitate to let me know either here, at the RcppEigen repo, or by email.
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@mgoplerud
mgoplerud merged commit 84e2d21 into mgoplerud:main Nov 3, 2026
@mgoplerud

mgoplerud commented Nov 3, 2026

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Thanks for your help on this (and the other packages ) @eddelbuettel !
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@eddelbuettel @mgoplerud
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