R package installation fails with error in tfio/R/experimental_wrappers.R:59

[s-elsheikh]

Hi,
thanks for your efforts in saving R users the effort and creating this R package for tfio.

I tried to install it today, but there seemed to be a syntax error

to reproduce:
I created a fresh conda env,
installed tensorflow[and-cuda]==2.16.2
installed tensorfloe_io

then ran this code in R:

1. set conda env
2. check python version
3. check tfio installation and version
4. install R package

this is a reprex of the output:

reticulate::use_condaenv("tfio_env")
reticulate::py_run_string("import sys; print(sys.version)")
#> 3.9.23 (main, Jun 5 2025, 13:49:45)
#> [GCC 11.2.0]
reticulate::py_run_string("import sys; print(sys.version_info)")
#> sys.version_info(major=3, minor=9, micro=23, releaselevel='final', serial=0)
reticulate::py_run_string("import tensorflow_io as tfio; print(tfio.version)")
#> 0.37.1
remotes::install_github("tensorflow/io", subdir = "R-package")
#> Downloading GitHub repo tensorflow/io@HEAD
#>
#> ── R CMD build ─────────────────────────────────────────────────────────────────
#> /bin/bash: /home/samer/anaconda3/envs/tfio_env/lib/libtinfo.so.6: no version information available (required by /bin/bash)
#> * checking for file ‘/tmp/RtmpwFGsvO/remotes377e4456b5b3/tensorflow-io-e42be7b/R-package/DESCRIPTION’ ... OK
#> * preparing ‘tfio’:
#> * checking DESCRIPTION meta-information ... OK
#> * checking for LF line-endings in source and make files and shell scripts
#> * checking for empty or unneeded directories
#> Removed empty directory ‘tfio/docs’
#> Omitted ‘LazyData’ from DESCRIPTION
#> * building ‘tfio_0.4.1.tar.gz’
#> Installing package into '/home/samer/R/x86_64-pc-linux-gnu-library/4.5'
#> (as 'lib' is unspecified)
#> Warning in i.p(...): installation of package
#> '/tmp/RtmpwFGsvO/file377e7036adec/tfio_0.4.1.tar.gz' had non-zero exit status

the above output did not capture the error:

Error in parse(...) :
/tmp/RtmpfsHKb8/R.INSTALL33a2443e04d8/tfio/R/experimental_wrappers.R:59:23: unexpected 'function'
58: #' @export
59: IODataset <- function(function
^
ERROR: unable to collate and parse R files for package ‘tfio’

• removing ‘/home/samer/R/x86_64-pc-linux-gnu-library/4.5/tfio’

Thanks a lot