Use the folder from which the R session is started as the renv project folder

[dklein-pik]

Purpose of this PR

Fixing https://github.com/remindmodel/development_issues/issues/305

The .Rprofile always sets the renv project folder to the folder from which the R session is stared. Prerequisite: the folder needs to contain the .Rprofile. Result: if started in a run folder, renv uses the renv-library from the run folder and not from the REMIND main folder.

cd /p/tmp/dklein/remind-renvtest/
Rscript -e "setwd('output/testOneRegi'); system('Rscript -e \"renv::project()\"')"
cd output/testOneRegi/
Rscript -e "renv::project()"

Both return [1] "/p/tmp/dklein/remind-renvtest/output/testOneRegi"

Type of change

• [x] Bug fix

Checklist:

• [x] My code follows the coding etiquette
• [x] I performed a self-review of my own code
• [x] I explained my changes within the PR, particularly in hard-to-understand areas
• [ ] I checked that the in-code documentation is up-to-date
• [ ] I adjusted the reporting in remind2 where it was needed
• [ ] I adjusted forbiddenColumnNames in readCheckScenarioConfig.R in case the PR leads to deprecated switches
• [x] All automated model tests pass (FAIL 0 in the output of make test)
• [ ] The changelog CHANGELOG.md has been updated correctly

Further information (optional):

• Test runs are here: /p/tmp/dklein/remind-renvtest/output/testOneRegi

[dklein-pik]

The solution looks embarrassingly simple. But it was hard to figure what happens. Thank you Oli and Pascal, and sorry for the inconvenience.

[orichters]

Thanks for fixing it!