diff -urN py-rpy2.orig/files/patch-rpy_situation.py py-rpy2/files/patch-rpy_situation.py
--- py-rpy2.orig/files/patch-rpy_situation.py	1970-01-01 01:00:00.000000000 +0100
+++ py-rpy2/files/patch-rpy_situation.py	2019-05-04 11:40:56.563738000 +0200
@@ -0,0 +1,11 @@
+--- rpy/situation.py.orig	2019-02-23 20:09:30 UTC
++++ rpy/situation.py
+@@ -63,7 +63,7 @@ def r_home_from_registry():
+ 
+ def get_rlib_path(r_home: str, system: str) -> str:
+     """Get the path for the R shared library."""
+-    if system == 'Linux':
++    if system == 'Linux' or system == 'FreeBSD':
+         lib_path = os.path.join(r_home, 'lib', 'libR.so')
+     elif system == 'Darwin':
+         lib_path = os.path.join(r_home, 'lib', 'libR.dylib')