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May 3, 2018 02:10
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This script is used before `update.packages(ask = F)` on Travis CI R
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| if (Sys.getenv('TRAVIS_OS_NAME') == 'linux') { | |
| installed <- installed.packages() | |
| recommended <- installed[mapply(identical, installed[ ,"Priority"], 'recommended'), 'Package'] | |
| lapply(recommended, function(pkg){ | |
| src = file.path(.Library, pkg); | |
| desc = file.path(.libPaths()[1], pkg); | |
| if (dir.exists(desc)) | |
| unlink(src, T) | |
| else { | |
| dir.create(desc); | |
| file.rename(src, desc); | |
| } | |
| }) | |
| } |
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When building R package with Travis, we want to the dependency packages to be the latest and well cached.
Although
update.packages(ask = F)is very convenient when you run in sudo mode, Travis only caches user library.After a awful afternoon, I come up with a solution:
Move recommended packages (system packages get updated along with R) to user library if they don't exist, then they can be cached. The next time, recommended packages in system library will be removed. (While there seem be a override rule, we still tend to avoid duplicate. Actually, Travis will get a warning when it just update the one in user library)