r-modules: fix r package system dependencies
r-modules: fix terra package dependencies
r-modules: fix edge case for R package import
The R package "import" has a name that clashes
with the nix function "import". The package
name in nixpkgs is correctly modified to
avoid the clash, but the name of the
R package was also being changed in
cran-packages.nix, which broke downloading
of the package.
cran-packages.nix has been manually patched,
and genreate-r-packages.R has been fixed so
future automatic updates will succeed.
r-modules: fix repeated `pkgs.` and svglite
The last snapshot was 4 months ago (2020-08-19). I also found that I needed newer definitions when I was trying to fix the R arrow package.
This update required a couple of manual changes:
1. Removing a few deleted packages from default.nix
2. Renaming the "assert" package to "r_assert" in generate-r-packages.R because "assert" is a keyword in Nix
- Update the instructions for re-generating each of the package set files.
- Provide test-evaluation.nix expression to verify that the package sets evaluates.
- Update list of known broken packages.
