Greetings. I'm working on a small package, and I'm using the devtools
functions to create, build, etc., the package.
As indicated in the subject line, I get no errors when I do:
> build()
> install()
When I run a separate R session and load the package, i.e.,
> library(my_pkg)
the package loads without error, and the two exported functions appear
to work as advertised.
OTOH, if I include devtools::check() in the construction of the
package, I consistently get an error:
* installing *source* package ‘my_pkg’ ...
** R
** preparing package for lazy loading
Error in loadNamespace(from, lib.loc = .library) :
there is no package called ‘dplyr’
Error : unable to load R code in package 'my_pkg'
Clearly there *is* a package called "dplyr" on my system (see the
session info below, for instance). And, as I've mentioned, the code
*does* run, and I can watch it successfully reading CSV files.
Here's the relevant part of my DESCRIPTION file:
Depends: R (>= 3.4.4)
Imports: readr,
dplyr,
ggplot2,
purrr,
magrittr
I suspect the problem may be that I'm misunderstanding something about
the `import::from()` function, which I'm using for the first time to
load required functions into my code. In each of the three files that
use dplyr I have the line:
import::from(dplyr, mutate, filter, rename, select, setdiff, slice, "%>%")
I've tried:
(1) putting that line in just one of the files (the lexically first one)
(2) including different subsets of dplyr functions, as needed, in
the various files
Needless to say, I haven't seen any improvement with any of the above
(or any of the other thrashing I've done).
If you can point me in the right direction, I'd appreciate it. Thanks.
-- Mike
> session_info()
Session info ------------------------------------------------------------------
setting value
version R version 3.4.4 (2018-03-15)
system x86_64, linux-gnu
ui X11
language en_US
collate en_US.UTF-8
tz America/Los_Angeles
date 2018-07-14
Packages ----------------------------------------------------------------------
package * version date source
assertthat 0.2.0 2017-04-11 CRAN (R 3.3.3)
base * 3.4.4 2018-03-16 local
bindr 0.1.1 2018-03-13 CRAN (R 3.4.3)
bindrcpp 0.2.2 2018-03-29 CRAN (R 3.4.4)
compiler 3.4.4 2018-03-16 local
crayon 1.3.4 2017-09-16 CRAN (R 3.4.1)
datasets * 3.4.4 2018-03-16 local
devtools * 1.13.6 2018-06-27 CRAN (R 3.4.4)
digest 0.6.15 2018-01-28 CRAN (R 3.4.3)
dplyr * 0.7.6 2018-06-29 CRAN (R 3.4.4)
glue 1.2.0 2017-10-29 CRAN (R 3.4.2)
graphics * 3.4.4 2018-03-16 local
grDevices * 3.4.4 2018-03-16 local
magrittr 1.5 2014-11-22 CRAN (R 3.2.2)
memoise 1.1.0 2017-04-21 CRAN (R 3.3.3)
methods * 3.4.4 2018-03-16 local
pillar 1.3.0 2018-07-14 CRAN (R 3.4.4)
pkgconfig 2.0.1 2017-03-21 CRAN (R 3.4.0)
purrr 0.2.5 2018-05-29 CRAN (R 3.4.4)
R6 2.2.2 2017-06-17 CRAN (R 3.4.0)
Rcpp 0.12.17 2018-05-18 CRAN (R 3.4.4)
rlang 0.2.1 2018-05-30 CRAN (R 3.4.4)
stats * 3.4.4 2018-03-16 local
tibble 1.4.2 2018-01-22 CRAN (R 3.4.3)
tidyselect 0.2.4 2018-02-26 CRAN (R 3.4.3)
utils * 3.4.4 2018-03-16 local
withr 2.1.2 2018-03-15 CRAN (R 3.4.3)
>
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