IPO builds/checks are failing

[rietho]

I am still listed as maintainer of IPO. Now, I received an email that IPI builds/checks are failing: https://bioconductor.org/checkResults/3.22/bioc-LATEST/IPO/

Failed Checks

Package suggested but not available: ‘mtbls2’

Question: Is it safe to remove mtbls2 from the suggested libaries?

Failed Builds

The failed builds are on Mac and happen on creating a vignette:

 creating vignettes ... ERROR
--- re-building ‘IPO.Rmd’ using rmarkdown
2025-06-23 16:39:27.418 R[84246:157473520] XType: Using static font registry.

Quitting from IPO.Rmd:118-134 [optimize_peak_picking]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `dev.off()`:
! QuartzBitmap_Output - unable to open file '/var/folders/r0/l4fjk6cj5xj0j3brt4bplpl40000gt/T//RtmpeCvI9f/file1491613d6bf88'
---
Backtrace:
     ▆
  1. └─tools::buildVignettes(dir = ".", tangle = TRUE)
  2.   ├─base::tryCatch(...)
  3.   │ └─base (local) tryCatchList(expr, classes, parentenv, handlers)
  4.   │   └─base (local) tryCatchOne(expr, names, parentenv, handlers[[1L]])
  5.   │     └─base (local) doTryCatch(return(expr), name, parentenv, handler)
  6.   └─engine$weave(file, quiet = quiet, encoding = enc)
  7.     └─knitr:::vweave_rmarkdown(...)
  8.       └─rmarkdown::render(...)
  9.         └─knitr::knit(knit_input, knit_output, envir = envir, quiet = quiet)
 10.           └─knitr:::process_file(text, output)
 11.             ├─xfun:::handle_error(...)
 12.             ├─base::withCallingHandlers(...)
 13.             └─knitr:::process_group(group)
 14.               └─knitr:::call_block(x)
 15.                 └─knitr:::block_exec(params)
 16.                   └─knitr:::eng_r(options)
 17.                     └─grDevices::dev.off(dv)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'IPO.Rmd' failed with diagnostics:
QuartzBitmap_Output - unable to open file '/var/folders/r0/l4fjk6cj5xj0j3brt4bplpl40000gt/T//RtmpeCvI9f/file1491613d6bf88'

I am not sure what to do here.

@sneumann , can you or someone you know help here?

I have been out of touch with IPO for a while and am not maintaining the library. At the same time, if there is still value having IPO up and running, I am willing to ensure fixes are pushed to Bioconductor. A pull request with fixes would be ideal.