You can search for these packages on CRAN to see if they're available, and if so, for which version they have last been built.
shinyapps yields this, which indicates there's no package on CRAN by that name. Compare this with
ggplot2, which yields this as its first result.
There are generally two common cases for the "not available for R version xyz"-error:
- The package has not been built on CRAN for your R version and operating system yet (for 3.6.0, I think most packages should be built by now for most OSes)
- The package is from a non-CRAN repository, like GitHub or RForge (looking at the
RForgeTools in your list there). This is probably the case for the
You might want to search Github for these packages names. For
shinyapps, I get this repository from RStudio which says it's a deprecated package an replaced by
rsconnect, so as long as you have
rsconnect installed, you can probably safely ignore that package.
htmldeps package, you'll find that https://github.com/rstudio/htmldeps – I think you have this installed as a dependency for a different package, maybe
shiny? Anyway, if you install the package that depends on
htmldeps again, it should also install it's dependencies from GitHub if they were declared appropriately. Alternatively you can
remotes::install_github("rstudio/htmldeps") if you know you need it.