lavaan package deployment error: unable to load shared object ''/opt/R/3.4.0/lib/R/library/quadprog/libs/quadprog.so'

[Fien Gistelinck]

Hi, 

I'm writing a Shiny-app based on a particular version of lavaan.
The app works perfect locally, but as soon as I try to deploy it, I get an error when preparing the package for lazy loading.

A part of the task log is as follows:

[2018-08-28T17:54:56.160473657+0000] Installing R package: quadprog (1.5-5)
* installing to library �/opt/R/3.4.0/lib/R/library�
* installing *binary* package �quadprog� ...
* DONE (quadprog)
[2018-08-28T17:54:56.397939822+0000] Building R package: lavaan (0.5-23.1097)
/mnt/packages/build /mnt
* installing to library �/opt/R/3.4.0/lib/R/library�
* installing *source* package �lavaan� ...
** package �lavaan� successfully unpacked and MD5 sums checked
** R
** data
*** moving datasets to lazyload DB
** inst
** preparing package for lazy loading
Error in dyn.load(file, DLLpath = DLLpath, ...) :
  unable to load shared object '/opt/R/3.4.0/lib/R/library/quadprog/libs/quadprog.so':
  libRblas.so: cannot open shared object file: No such file or directory
ERROR: lazy loading failed for package �lavaan�
* removing �/opt/R/3.4.0/lib/R/library/lavaan�

Based on previous questions, I thought there was an issue on the quadprog package, 

but as you can see above, the package was correctly build in the application.

Any ideas?

Much appreciated!

Yours sincerly

[Joshua Spiewak]

The problem is that quadprog, while it successfully installed, was improperly compiled against a bad R binary and then cached.

When lavaan was installed, it tried to actually load the shared library from quadprog, which failed due linking against a library from that bad R binary.

I have flushed quadprog from the cache for R 3.4.0, and that should cause it to be rebuilt against the proper R binary.

Let me know how it goes.

[Fien Gistelinck]

Hi, Joshua.
It deploys now! Yeej!
Thank you so much for your help!!