- remove cutoff for picking RSPM, always use it
- remove now-redundant r4.0-mran test
- shift base R 3.6 snapshot date to after October 2017, when rspm snapshots seem to have started
- update docs to point to RSPM
Dataverse creates plain-text, preservation-friendly copies of certain
file formats (some of which are proprietary, such as Stata or SPSS) and
this .tab (tab-separated) file is downloaded unless you supply
`format=original`, which is what this pull request does.
The original filename (e.g. foo.dta, a Stata file) comes from
`originalFileName`, which is only populated when the preservation copy
(e.g. foo.tab) has been successfully created.
Additional variables were created to distinguish between `filename`,
`original_filename`, and `filename_with_path`. If `original_filename`
is available, it's the right one to use.
To allow the tests to continue passing, the query parameters are now
removed so just the file id can be cast as an int.
- removes lockfile copies without version
- enforces that `buildpack.python_version` is always specified (major_pythons['3'] in cases where it could have been falsy before)
- warns when Python version is unspecified, which ensures future reproducibility failures
We want users to be able to install new versions of R
as soon as they are out, without us having to do anything
special in repo2docker. So we can't actually check for 'invalid'
R versions. This is ok, as we don't have to special case apt repos
or similar when installing R from rstudio's debs
r-recommended is a collection of common CRAN packages,
which cause conflicts when trying to install older R.
These same packages can be regular dependencies retrieved from CRAN.
PPA is a specific kind of apt repository, hosted on
launchpad.net. We use https://cran.r-project.org/bin/linux/ubuntu/,
which is just a regular apt repository. The PPA terminology
always confused me, so this just clears that up