Description: Trying to bind to debian htslib
--- python-pysam.orig/setup.py
+++ python-pysam/setup.py
@@ -43,7 +43,7 @@
 #         pysam.
 # external: use shared libhts.so compiled outside of
 #           pysam
-HTSLIB_MODE = "separate"
+HTSLIB_MODE = "external"
 HTSLIB_LIBRARY_DIR = os.environ.get('HTSLIB_LIBRARY_DIR', None)
 HTSLIB_INCLUDE_DIR = os.environ.get('HTSLIB_INCLUDE_DIR', None)
 
@@ -111,6 +111,12 @@
     htslib_library_dirs = ['pysam']
     htslib_include_dirs = ['htslib']
     htslib_libraries = ['chtslib']
+elif HTSLIB_MODE == 'external':
+    htslib_sources = []
+    chtslib_sources = []
+    shared_htslib_sources = htslib_sources
+    htslib_library_dirs = HTSLIB_LIBRARY_DIR
+    htslib_libraries = ['hts']
 else:
     raise ValueError("unknown HTSLIB value '%s'" % HTSLIB_MODE)
 
