negbin latent projection in latent vignette fails with parallel

[avehtari]

Run latent.Rmd vignette until refm_nebin has been created. cv_varsel() works with parallel=FALSE, but

registerDoFuture();
plan(multisession, workers=8);
vs_nebin <- cv_varsel(refm_nebin, d_test = d_test_lat_poiss, method = "L1", nclusters_pred = 20, nterms_max = 14, parallel=TRUE)

fails with an error

Error in { : task 1 failed - "object 'refm_prec' not found"

[fweber144]

Thanks for reporting. We probably need to replace lines

projpred/R/cv_varsel.R

Line 1000 in 25748e8

.export = c("one_obs", "dot_args"),

and

projpred/R/cv_varsel.R

Line 1335 in 25748e8

.export = c("one_fold", "dot_args"),

by something like

.export = c("one_obs", "dot_args", getOption("projpred.export_to_workers", character())),

and

.export = c("one_fold", "dot_args", getOption("projpred.export_to_workers", character())),

respectively. Then users can set the global option projpred.export_to_workers as needed.