我正在尝试为我的Shiny R应用实现Travis连续集成，如here所述。但是，当我复制其确切的yml文件示例时，最终遇到以下gsl安装错误。从那以后，我尝试了27种不同的变体和可能的解决方案（主要在this related answer之后），但是我总是遇到类似的gsl错误。我的最新尝试和以前所有尝试都可以进行检查here。
Installing gsl (2.1-6) ...
Error: Command failed (1)
Failed to run system command:
'/home/travis/R-bin/lib/R/bin/R' --vanilla CMD INSTALL '/tmp/RtmppiZQrX/gsl' --library='/home/travis/build/gasparl/esdi/packrat/lib/x86_64-pc-linux-gnu/3.4.1' --install-tests --no-docs --no-multiarch --no-demo
The command failed with output:
* installing *source* package 'gsl' ...
** package 'gsl' successfully unpacked and MD5 sums checked
checking for gsl-config... no
configure: error: gsl-config not found, is GSL installed?
ERROR: configuration failed for package 'gsl'
* removing '/home/travis/build/gasparl/esdi/packrat/lib/x86_64-pc-linux-gnu/3.4.1/gsl'
In addition: Warning message:
In packrat::restore() :
The most recent snapshot was generated using R version 3.6.3
Execution halted
The command "R -e "packrat::packify(); packrat::restore()"" failed and exited with 1 during .
关于如何解决此问题的任何想法？