R Under development (unstable) (2023-07-14 r84692 ucrt) -- "Unsuffered Consequences"
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> library(testthat)
> test_check("rim")
Loading required package: rim
Could not find Maxima executable, please download from
 https://maxima.sourceforge.io/download.html
 and install
Please make sure maxima executable is on PATH environment variable.
Maxima successfully registered as knitr engine!
[ FAIL 0 | WARN 0 | SKIP 7 | PASS 0 ]

══ Skipped tests (7) ═══════════════════════════════════════════════════════════
• Maxima not installed (7): 'test-apropos.R:2:3', 'test-ask-user.R:2:3',
  'test-engine.R:2:3', 'test-errors.R:2:3', 'test-execute.R:2:3',
  'test-parser.R:2:3', 'test-warnings.R:2:3'

[ FAIL 0 | WARN 0 | SKIP 7 | PASS 0 ]
> 
> proc.time()
   user  system elapsed 
   0.78    0.10    0.85