Long R_LIBS (R_LIBS_DEPS) not parsed properly by R CMD INSTALL about rules_r HOT 6 CLOSED

We had a similar issue and found that there may be a problem with env var interpolation with Renviron:

root@46ac8f61aa7b:/# R_LIBS=$(printf '=%.0s' {1..10000})  R -s -e 'Sys.getenv("R_LIBS")'
[1] "${R_LIBS-/usr/local/lib/R/site-library:/usr/local/lib/R/library}"
root@46ac8f61aa7b:/# R -s -e 'Sys.getenv("R_LIBS")'
[1] "/usr/local/lib/R/site-library:/usr/local/lib/R/library"
root@46ac8f61aa7b:/#

We found a /usr/local/lib/R/etc/Renviron that contained

[...]
R_LIBS=${R_LIBS-'/usr/local/lib/R/site-library:/usr/local/lib/R/library'}
[...]

To resolve our issue, we ended up removing the line from our Renvirons :

find / -name "Renviron" | xargs sed -i -E -e "/R_LIBS=\\$\{R_LIBS-/d"

Not sure if that relates to your issue, but it definitely sounds very similar, maybe worth a try.

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Thanks for confirming that interpolation was the issue. I will look for workarounds.

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Hello,

Thank you @gfinak for reporting this issue. I did observe issues with R 3.3 but I have not seen them since then. So I defaulted to using this behaviour.

Copying all the deps to a unique temporary directory for every build can be very inefficient, but I can perhaps try symlinking them.

Is there a way I can reproduce this issue? No worries if not.

Thank you @mst for your hypothesis. Interpolation does have its own restrictions. If I can recreate the specific issue, I will try with and without interpolation.

Sid

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Thanks, both. Apologies, that I didn't provide a reprex, but this has been difficult to isolate. Glad to hear I'm not alone, and @mst I'll try your approach and report back. @siddharthab that's a good point. I'm new to Bazel and still finding my way around. I'll let you know shortly if this resolves the issue.

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@mst can confirm that editing Renviron resolved this issue.
This was on R 4.0.

@siddharthab medium-term would you consider a patch to this that doesn't require editing Renviron?
I'm happy to take a stab at it if it creeps up again for me in the future, but personally, for now, I'm satisfied with the work-around.

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Working on this now.

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