To cite package ‘envvar’ in publications use:

Connelly B (2024). envvar: Make Working with Environment Variables Easier and More Consistent. R package version 0.1.2.9000, https://github.com/briandconnelly/envvar.

Corresponding BibTeX entry:

  @Manual{,
    title = {envvar: Make Working with Environment Variables Easier and
      More Consistent},
    author = {Brian Connelly},
    year = {2024},
    note = {R package version 0.1.2.9000},
    url = {https://github.com/briandconnelly/envvar},
  }