R Under development (unstable) (2025-07-15 r88411 ucrt) -- "Unsuffered Consequences"
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> library(testthat)
> library(nlmixr2)
── Attaching packages ───────────────────────────────────────── nlmixr2 4.0.0 ──
✔ lotri        1.0.0     ✔ nlmixr2extra 3.0.2
✔ nlmixr2data  2.0.9     ✔ nlmixr2plot  3.0.2
✔ nlmixr2est   4.0.0     ✔ rxode2       4.0.0
── Optional Packages Loaded/Ignored ─────────────────────────── nlmixr2 4.0.0 ──
✖ babelmixr2     ✖ nlmixr2rpt
✖ ggPMX     ✖ nonmem2rx
✖ monolix2rx     ✖ shinyMixR
✖ nlmixr2lib     ✖ xpose.nlmixr2
── Conflicts ───────────────────────────────────────────── nlmixr2conflicts() ──
✖ rxode2::boxCox()     masks nlmixr2est::boxCox()
✖ rxode2::yeoJohnson() masks nlmixr2est::yeoJohnson()
> 
> test_check("nlmixr2")
[ FAIL 0 | WARN 0 | SKIP 0 | PASS 6 ]
> 
> proc.time()
   user  system elapsed 
  14.09    2.25   20.98