Core Utilities for Developing and Running Spatially Explicit Discrete Event Models R package SpaDES.core version 3.2.1 Provides the core framework for a discrete event system to implement a complete data-to-decisions, reproducible workflow. The core components facilitate the development of modular pieces, and enable the user to include additional functionality by running user-built modules. Includes conditional scheduling, restart after interruption, packaging of reusable modules, tools for developing arbitrary automated workflows, automated interweaving of modules of different temporal resolution, and tools for visualizing and understanding the within-project dependencies. Software Depends: R (>= 4.3), quickPlot (>= 1.0.2), reproducible (>= 3.0.0) Imports: cli, codetools, data.table (>= 1.11.0), fs, igraph (>= 1.0.1), lobstr, methods, qs2, Require (>= 2.0.0), rlang, stats, terra (>= 1.7-46), tools, utils, whisker Suggests: archive, CircStats, xml2, xmlparsedata, covr, DBI, DiagrammeR (>= 0.8.2), future, future.callr, ggplot2, ggplotify, gitcreds, googledrive, httr, httr2, knitr, lattice, lme4, logging, magrittr, pkgload, png, RColorBrewer (>= 1.1-2), raster (>= 2.5-8), rmarkdown, roxygen2, rprojroot, RSQLite, rstudioapi, sp, SpaDES.tools (>= 2.1.1), tcltk, testthat (>= 1.0.2), withr Eliot J B McIntire <eliot.mcintire@canada.ca> Comprehensive R Archive Network (CRAN) Alex M Chubaty [aut] (ORCID: <https://orcid.org/0000-0001-7146-8135>), Eliot J B McIntire [aut, cre] (ORCID: <https://orcid.org/0000-0002-6914-8316>), Yong Luo [ctb], Steve Cumming [ctb], Ceres Barros [ctb] (ORCID: <https://orcid.org/0000-0003-4036-977X>), His Majesty the King in Right of Canada, as represented by the Minister of Natural Resources Canada [cph] GPL-3 2026-08-29 application/tgz https://CRAN.R-project.org/package=SpaDES.core doi:10.32614/CRAN.package.SpaDES.core en-CA