Issues deploying `ovva_demo` variant to shinyapps.io

[awosoga]

Potentially not an issue that you can address, but I’m working on a modified version of ovva but am not able to deploy it to shinyapps.io because of ovideo’s dependency on the archive package (used solely in install_ffmpeg.R). An error is thrown that the shinyapps.io container image doesn’t have libarchive installed.

For example, something as simple as

library(archive)
library(shiny)
ui <- fluidPage(
  plotOutput('plot')
)
server <- function(input, output) {
  output$plot <- renderPlot({
    hist(runif(200))
  })
}

shinyApp(ui = ui, server = server)

works fine locally but throws an error when I try to deploy it to shinyapps.io. So I’m wondering how ovva_demo is able to run when it imports ovideo, which in turn imports archive. Have you encountered this problem before? Or if this is a recent issue, when last did you deploy the ovva_demo? Would appreciate any insight that you have. Thanks,

[raymondben]

Last deploy of ovva_demo to shinyapps was prior to adding archive, so I didn't run across that issue. I was going to suggest raising an issue with Posit (like they tell you to do, when a system dependency is unavailable) ... but it does not look like they are overly responsive to issues or PRs there. But we can avoid the archive dependency here, because base::memDecompress will handle .xz compression. I did not realize that previously, but just tried it and it seems fine, so I'll update ovideo in the next day or two.

[awosoga]

This is great news, thank you so much!

[raymondben]

ovideo updated: https://github.com/openvolley/ovideo/commit/14d80e1b476607dccbb1b7777b40a0f19399bd0e

• reinstall ovideo and see if that solves the deployment issue

[awosoga]

The error has resolved, thank you!