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Use frozen snapshots of package repositories #235

Open maurolepore opened 5 years ago

maurolepore commented 5 years ago

Can get snapshots from https://mran.microsoft.com/documents/rro/reproducibility

# from https://resources.rstudio.com/webinars/time-travel-r
R.home()

```bash
cd /opt/R/3.6.0/lib/R
cat etc/Rprofile.site

Add to Rprofile.site

local({ print("Setting frozen repo at data snapshot 123") options(repos = c(CRAN = "https://...123")) })