r - 如何在 Shiny 的应用程序中使用 renv 包以避免在 Shiny 的服务器上安装新包？

Question

我想测试 renv Shiny 的应用程序包。
这是我的虚拟应用程序:

library(pool)
library(fresh)
library(shiny)


ui <- fluidPage(
    titlePanel("Old Faithful Geyser Data"),
    sidebarLayout(
        sidebarPanel(
            sliderInput("bins",
                        "Number of bins:",
                        min = 1,
                        max = 50,
                        value = 30)
        ),

        mainPanel(
           plotOutput("distPlot")
        )
    )
)
server <- function(input, output) {

    output$distPlot <- renderPlot({
        x    <- faithful[, 2]
        bins <- seq(min(x), max(x), length.out = input$bins + 1)
        hist(x, breaks = bins, col = 'darkgray', border = 'white')
    })
}
shinyApp(ui = ui, server = server)

请注意，我只加载了 2 个库 pool和 fresh不使用它们。 init()来自 renv 的命令包正在我的项目路径上创建一个本地库:

renv::init("/home/z0044uca/mytest_renv/") 

* Initializing project ...
* Discovering package dependencies ... Done!
* Copying packages into the cache ... [21/21] Done!
The following package(s) will be updated in the lockfile:

# CRAN ===============================
- BH            [* -> 1.72.0-3]
- R6            [* -> 2.4.1]
- Rcpp          [* -> 1.0.5]
- base64enc     [* -> 0.1-3]
- commonmark    [* -> 1.7]
- crayon        [* -> 1.3.4]
- digest        [* -> 0.6.25]
- fastmap       [* -> 1.0.1]
- glue          [* -> 1.4.2]
- htmltools     [* -> 0.5.0]
- httpuv        [* -> 1.5.4]
- jsonlite      [* -> 1.7.1]
- later         [* -> 1.1.0.1]
- magrittr      [* -> 1.5]
- mime          [* -> 0.9]
- promises      [* -> 1.1.1]
- renv          [* -> 0.12.5]
- rlang         [* -> 0.4.7]
- shiny         [* -> 1.5.0]
- sourcetools   [* -> 0.1.7]
- withr         [* -> 2.2.0]
- xtable        [* -> 1.8-4]

* Lockfile written to '~/mytest_renv/renv.lock'.
* Project '~/mytest_renv' loaded. [renv 0.12.5]

Restarting R session...

* Project '~/mytest_renv' loaded. [renv 0.12.5]

我的问题是如何将应用程序部署到我的 Shiny 服务器而不在服务器上安装两个包( pool 和 fresh )。
当我将整个文件夹( mytest_renv )复制到我的服务器并尝试在浏览器中运行该应用程序时，出现以下错误(在 log 文件中)

Warning message:
The following package(s) are missing entries in the cache:

        base64enc, BH, commonmark, crayon, DBI, digest, fastmap,
        fresh, fs, glue, htmltools, httpuv, jsonlite, later,
        magrittr, mime, pool, promises, R6, rappdirs, Rcpp, rlang,
        rstudioapi, sass, shiny, sourcetools, withr, xtable

These packages will need to be reinstalled.

Error in loadNamespace(name) : there is no package called ‘digest’
Calls: local ... loadNamespace -> withRestarts -> withOneRestart -> doWithOneRestart
Execution halted

我期待着 renv我的应用程序目录中的文件夹负责所有包和依赖项。

Answer 1

https://community.rstudio.com/t/shiny-server-renv/71879/2可能是相关的——您可能想调用 renv::isolate()在复制您的项目文件夹之前。