Closes #2012_derive_vars_dy #2075

Job	Run time
Validation	0s
Documentation	0s
Render README	0s
Lint / Get R version	1s
Spelling / Get R version	1s
Check / (4.1)	7m 6s
Check / (4.2)	5m 34s
Check / (4.3)	4m 54s
Links / Validate Links	9s
Code Coverage / Get R version	1s
Code Style / Get R version	2s
Man Pages / Get R version	2s
Spelling / Spellcheck	2m 42s
Code Coverage / Test Coverage	4m 25s
Lint / Lint	7m 30s
Man Pages / Roxygen	3m 15s
Code Style / Code Style	2m 18s
Code Coverage / Generate badge for coverage	5s
	38m 5s

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