# Pastebin 9jMyZOiF
```
ld: library not found for -liconv
clang-5.0: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [/nix/store/k7j7r2rsjfz9xy2ch5qsdln18mr9mggx-R-3.5.0/lib/R/share/make/shlib.mk:6: RcppEigen.so] Error 1
ERROR: compilation failed for package 'RcppEigen'
* removing '/nix/store/5a4gdp4cgwh1jhifm0basmnhvn5zmzry-r-RcppEigen-0.3.3.4.0/library/RcppEigen'
builder for ‘/nix/store/3f98x36gp80m7iy8wdf2gry2yjs4pb2m-r-RcppEigen-0.3.3.4.0.drv’ failed with exit code 1
cannot build derivation ‘/nix/store/383zlyz6flxzw1kimjjhf83a32m2jfj8-r-rstan-2.17.3.drv’: 1 dependencies couldn't be built
cannot build derivation ‘/nix/store/3fg0a5ga6211cyida9q63l5bp4kwhl1j-R-3.5.0-wrapper.drv’: 1 dependencies couldn't be built
error: build of ‘/nix/store/3fg0a5ga6211cyida9q63l5bp4kwhl1j-R-3.5.0-wrapper.drv’ failed
/nix/var/nix/profiles/default/bin/nix-shell: failed to build all dependencies
```