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In RStudio, I installed the package "devtools".

It seems to work, I get the message that "the downloaded source packages are in ‘/tmp/RtmpGgMiD2/downloaded_packages’".

However, then library(devtools) does not work.

enter image description here

How can I make the package available?

TMOTTM
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2 Answers2

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If you read your error messages, you'll see that curl, one of the dependencies of httr, which in turn is one of the dependencies of devtools didn't install correctly, hence devtools also didn't install.

That's why library(devtools) didn't work.

To fix this, you could try again with installing curl from the downloaded file. Either call install.packages with repos = NULL and a path to the downloaded file, or in RStudio click Install Packages and choose Install from: Package Archive File (.zip; .tar.gz)

I can't see from your screenshot, but if installation of the binary version of curl doesn't work, you could try installing the package from source.

Richie Cotton
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You can try to run this command:

install.packages('devtools', dependencies = TRUE)

This should install the devtools packages but, it will also install all the dependencies (other packages required by the devtools package). After that when you run:

library(devtools)

You should not have any errors left.

Mickael T.
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