[R-pkg-team] Bug#964086: r-cran-sf: autopkgtest failures with PROJ 7.1.0

[Bas Couwenberg]

Source: r-cran-sf
Version: 0.9-3+dfsg-1
Severity: serious
Justification: makes the package in question unusable or mostly so

Dear Maintainer,

The autopkgtest of your package fail with PROJ 7.1.0:

 BEGIN TEST testthat.R

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 > library(testthat)
 > suppressPackageStartupMessages(library(sf))
 > 
 > test_check("sf")
 proj_create: Cannot find proj.db
 proj_create: Cannot find proj.db
 proj_create_operation_factory_context: Cannot find proj.db
 pj_obj_create: Cannot find proj.db
 pj_obj_create: Cannot find proj.db
 Cannot open layer foo
 Reading layer `nospatial' from data source `/usr/lib/R/site-library/sf/gpkg/nospatial.gpkg' using driver `GPKG'
 Reading layer `nospatial' from data source `/usr/lib/R/site-library/sf/gpkg/nospatial.gpkg' using driver `GPKG'
 OGR: Unsupported geometry type
 -- 1. Failure: filter to sfc works (@test_tidy.R#17)  --------------------------
 d %>% filter(!st_is_empty(geometry)) not identical to d[1, ].
 Component "geometry": Attributes: < Component "class": 1 string mismatch >

 -- 2. Failure: filter to sfc works (@test_tidy.R#19)  --------------------------
 d %>% filter(st_is(geometry, "POINT")) not identical to d[1:2, ].
 Component "geometry": Attributes: < Component "class": 1 string mismatch >

 Failed to create feature 1 in x
 Failed to create feature 1 in x
 == testthat results  ===========================================================
 [ OK: 522 | SKIPPED: 17 | WARNINGS: 6 | FAILED: 2 ]
 1. Failure: filter to sfc works (@test_tidy.R#17) 
 2. Failure: filter to sfc works (@test_tidy.R#19) 

 Error: testthat unit tests failed
 Execution halted

https://ci.debian.net/data/autopkgtest/unstable/amd64/r/r-cran-sf/6060227/log.gz

The upstream git repo shows several changes related to PROJ 7.1.0,
you can likely cherry-pick those to fix this issue.

Kind Regards,

Bas